CN113964551B - Antenna device and electronic equipment - Google Patents
Antenna device and electronic equipment Download PDFInfo
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- CN113964551B CN113964551B CN202010707001.5A CN202010707001A CN113964551B CN 113964551 B CN113964551 B CN 113964551B CN 202010707001 A CN202010707001 A CN 202010707001A CN 113964551 B CN113964551 B CN 113964551B
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/2258—Supports; Mounting means by structural association with other equipment or articles used with computer equipment
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Computer Hardware Design (AREA)
- General Engineering & Computer Science (AREA)
- Support Of Aerials (AREA)
Abstract
The embodiment of the application provides an antenna device and electronic equipment, wherein the antenna device comprises a near field communication chip, a first antenna and a second antenna, the near field communication chip is used for providing differential excitation current, the first antenna is used for transmitting the differential excitation current and radiating near field communication signals at a first near field communication resonance frequency, the second antenna is used for transmitting the differential excitation current and radiating near field communication signals at a second near field communication resonance frequency, and the first near field communication resonance frequency is different from the second near field communication resonance frequency. In the electronic device, the NFC resonant frequency of the first antenna is different from the NFC resonant frequency of the second antenna, namely, the first antenna and the second antenna can work in different frequency bands, so that the electronic device can support the near field communication of multiple frequency bands, and the communication adaptability of the electronic device is improved.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to an antenna apparatus and an electronic device.
Background
With the development of communication technology, electronic devices such as smartphones are capable of realizing more and more functions, and communication modes of the electronic devices are also more diversified. For example, recently electronic devices have become available to implement Near Field Communication (NFC).
However, in general, the electronic device can only support near field communication in a single frequency band, and cannot meet application requirements.
Disclosure of Invention
The embodiment of the application provides an antenna device and electronic equipment, which can enable the electronic equipment to support multi-band near field communication, thereby improving the communication adaptability of the electronic equipment.
An embodiment of the present application provides an antenna apparatus, including:
The near field communication chip comprises a first differential signal end and a second differential signal end, wherein the first differential signal end and the second differential signal end are used for providing differential excitation current;
The first antenna is electrically connected with the first differential signal end and is used for transmitting the differential excitation current and radiating near field communication signals at a first near field communication resonance frequency;
a second antenna electrically connected to the second differential signal terminal, the second antenna being configured to transmit the differential excitation current and radiate near field communication signals at a second near field communication resonant frequency, wherein
The first near field communication resonant frequency is different from the second near field communication resonant frequency.
The embodiment of the application also provides electronic equipment, which comprises an antenna device, wherein the antenna device is the antenna device.
In the electronic device provided by the embodiment of the application, the NFC resonant frequency of the first antenna is different from the NFC resonant frequency of the second antenna, namely, the first antenna and the second antenna can work in different frequency bands, so that the electronic device can support the near field communication of multiple frequency bands, and the communication adaptability of the electronic device is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the description of the embodiments will be briefly described below. It is evident that the drawings in the following description are only some embodiments of the application and that other drawings may be obtained from these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a first structure of an electronic device according to an embodiment of the present application.
Fig. 2 is a schematic diagram of a first structure of an antenna device according to an embodiment of the present application.
Fig. 3 is a schematic diagram of a second structure of an antenna device according to an embodiment of the present application.
Fig. 4 is a schematic diagram of a third structure of an antenna device according to an embodiment of the present application.
Fig. 5 is a schematic diagram of a fourth structure of an antenna device according to an embodiment of the present application.
Fig. 6 is a schematic diagram of a fifth structure of an antenna device according to an embodiment of the present application.
Fig. 7 is a schematic diagram of a sixth structure of an antenna device according to an embodiment of the present application.
Fig. 8 is a schematic diagram of a second structure of an electronic device according to an embodiment of the present application.
Fig. 9 is a schematic diagram of a third structure of an electronic device according to an embodiment of the present application.
Fig. 10 is a schematic diagram of a fourth structure of an electronic device according to an embodiment of the present application.
Fig. 11 is a schematic diagram of a fifth structure of an electronic device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to fall within the scope of the application.
The embodiment of the application provides electronic equipment. The electronic device may be a smart phone, a tablet computer, or a game device, an AR (Augmented Reality ) device, an automobile device, a data storage device, an audio playing device, a video playing device, a notebook computer, a desktop computing device, or the like.
Referring to fig. 1, fig. 1 is a schematic diagram of a first structure of an electronic device 100 according to an embodiment of the present application.
The electronic device 100 includes a display screen 10, a housing 20, a circuit board 30, and a battery 40.
The display screen 10 is disposed on the housing 20 to form a display surface of the electronic device 100, and is used for displaying information such as images and texts. The display 10 may include a Liquid crystal display (Liquid CRYSTAL DISPLAY, LCD) or an Organic Light-Emitting Diode (OLED) display, or the like.
The housing 20 is used to form the exterior contour of the electronic device 100 so as to accommodate the electronics, functional components, etc. of the electronic device 100 while providing sealing and protection for the electronics and functional components within the electronic device. For example, the camera, circuit board, vibration motor functional components of the electronic device 100 may all be disposed inside the housing 20.
A circuit board 30 is disposed inside the housing 20. The circuit board 30 may be a motherboard of the electronic device 100. One or more of the functional components of the processor, camera, earphone interface, acceleration sensor, gyroscope, motor, etc. may also be integrated on the circuit board 30. Meanwhile, the display screen 10 may be electrically connected to the circuit board 30 to control display of the display screen 10 by a processor on the circuit board 30.
The battery 40 is disposed inside the housing 20. Meanwhile, the battery 40 is electrically connected to the circuit board 30 to enable the battery 40 to supply power to the electronic device 100. Wherein the circuit board 30 may be provided with a power management circuit. The power management circuit is used to distribute the voltage provided by the battery 40 to the various electronic devices in the electronic device 100.
Wherein, the electronic device 100 is further provided with an antenna device 200. The antenna device 200 is used to implement a wireless Communication function of the electronic device 100, for example, the antenna device 200 may be used to implement a Near Field Communication (NFC) function. The antenna device 200 is disposed inside the housing 20 of the electronic apparatus 100. It is understood that some components of the antenna device 200 may be integrated on the circuit board 30 inside the housing 20, for example, a signal processing chip and a signal processing circuit in the antenna device 200 may be integrated on the circuit board 30. In addition, some of the components of the antenna device 200 may be disposed directly inside the housing 20. For example, the antenna of the antenna device 200 may be disposed directly inside the housing 20.
Referring to fig. 2, fig. 2 is a schematic diagram of a first structure of an antenna device 200 according to an embodiment of the application. The antenna device 200 includes a near field communication chip 21, a first antenna 22, and a second antenna 23.
In the description of the present application, it should be understood that terms such as "first," "second," and the like are used merely to distinguish between similar objects and should not be construed to indicate or imply relative importance or implying any particular order of magnitude of the technical features indicated.
The near field communication chip (NFC chip) 21 is used to provide a differential excitation current. The differential excitation current may include 2 differential signals, and the 2 differential signals may be output as 2 independent signals and respectively provided with independent matching circuits for matching. Wherein the 2-way differential signal comprises two current signals. The two current signals are identical in amplitude and opposite in phase or understood to be 180 degrees out of phase. In addition, the 2-way differential signal is a balanced signal. It will be appreciated that during transmission, an analog signal is an unbalanced signal if it is transmitted directly, and that if the original analog signal is inverted and then the inverted analog signal and the original analog signal are transmitted simultaneously, the inverted analog signal and the original analog signal are called balanced signals.
The NFC chip 21 includes a first differential signal terminal 211 and a second differential signal terminal 212. For example, the first differential signal terminal 211 may be a positive (+) port of the NFC chip 21, and the second differential signal terminal 212 may be a negative (-) port of the NFC chip 21. The first differential signal terminal 211 and the second differential signal terminal 212 are configured to provide the differential excitation current. For example, the first differential signal terminal 211 may be used to provide 1 differential signal in the differential excitation current, and the second differential signal terminal 212 may be used to provide another 1 differential signal in the differential excitation current.
It will be appreciated that the NFC chip 21 may be disposed on the circuit board 30 of the electronic device 100, or a smaller separate circuit board may be disposed in the electronic device 100 and the NFC chip 21 may be integrated onto the separate circuit board. The separate circuit board may be, for example, a small board in the electronic device 100.
The first antenna 22 and the second antenna 23 are electrically connected to the NFC chip 21. For example, the first antenna 22 may be electrically connected to the first differential signal terminal 211 of the NFC chip 21, and the second antenna 23 may be electrically connected to the second differential signal terminal 212 of the NFC chip 21. In addition, the first antenna 22 and the second antenna 23 are grounded, so that the NFC chip 21, the first antenna 22, and the second antenna 23 may form a signal loop.
Wherein the first antenna 22 is configured to transmit the differential excitation current, for example, transmit 1-way differential signals in the differential excitation current, and radiate near field communication signals (NFC signals) at a first near field communication resonant frequency (NFC resonant frequency). Thus, the first antenna 22 may enable near field communication of the electronic device 100 with other electronic devices at the first NFC resonant frequency.
The second antenna 23 is configured to transmit the differential excitation current, for example, another 1-way differential signal in the differential excitation current, and radiate an NFC signal at a second NFC resonant frequency. Thus, the second antenna 23 may enable near field communication of the electronic device 100 with other electronic devices at the second NFC resonant frequency.
Wherein the first NFC resonant frequency is different from the second NFC resonant frequency. For example, the first NFC resonant frequency may be 13.56MHz and the second NFC resonant frequency may be 100KHz. For another example, the first NFC resonant frequency may be 13.56MHz and the second NFC resonant frequency may be 2.4GHz. For another example, the first NFC resonant frequency may be 100KHz and the second NFC resonant frequency may be 2.4GHz.
It will be appreciated that the characteristics of the first antenna 22 and the second antenna 23 may be different, such as shape, size, material, etc., such that the impedance of the first antenna 22 and the second antenna 23 may be different. Thus, the first antenna 22 and the second antenna 23 may respectively generate different resonance frequencies when transmitting the differential excitation current.
In practical applications, different electronic devices may have different communication frequencies in implementing near field communication. For example, the NFC communication frequency of a subway card reader may be 13.56MHz, while the NFC communication frequency of a portion of the door access system may be 100KHz, while the NFC communication frequency of a portion of the NFC enabled devices may be as high as 2.4GHz. In conventional electronic devices, NFC antennas generally only can work in the 13.56MHz frequency band, so that the application requirements of multiple scenes cannot be met. For example, in the conventional electronic device, when the NFC antenna works at 13.56MHz, a subway card swiping of 13.56MHz can be realized through the NFC function, but a 100KHz access control system cannot be opened.
In the electronic device 100 provided in the embodiment of the present application, the NFC resonant frequency of the first antenna 22 is different from the NFC resonant frequency of the second antenna 23, that is, the first antenna 22 and the second antenna 23 may operate in different frequency bands, so that the electronic device 100 may support multi-band near field communication, thereby improving the communication adaptability of the electronic device 100. For example, the electronic device 100 can support near field communication of 13.56MHz and 100KHz at the same time, so that the electronic device 100 can not only realize subway card swiping of 13.56MHz through NFC function, but also open an access control system of 100KHz, thereby expanding the application range of the electronic device 100 in life.
In some embodiments, the first antenna 22 generates a first near field communication radiation field (NFC radiation field) when transmitting the differential excitation current. The first NFC radiation field may cover an area of space around the electronic device 100. The second antenna 23 generates a second NFC radiation field when transmitting the differential excitation current. The second NFC radiation field may also cover an area of space around the electronic device 100. Wherein the first NFC radiation field and the second NFC radiation field do not overlap each other. Thus, the first antenna 22 operating at the first resonant frequency and the second antenna 23 operating at the second resonant frequency can be prevented from interfering with each other, and thus the operation stability of the first antenna 22 and the second antenna 23 can be improved.
For example, the first antenna 22 may be disposed at one end, such as a top end, of the electronic device 100, and the second antenna 23 may be disposed at the other end, such as a bottom end, of the electronic device 100, such that the first NFC radiation field generated by the first antenna 22 and the second NFC radiation field generated by the second antenna 23 do not overlap each other.
In some embodiments, referring to fig. 3, fig. 3 is a schematic diagram illustrating a second structure of an antenna device 200 according to an embodiment of the application.
Wherein the antenna device 200 further comprises a first non-near field communication chip 241. It is understood that the first non-near field communication chip 241 may be integrated on the circuit board 30 of the electronic device 100.
The first non-near field communication chip 241 is configured to provide a first non-near field communication excitation current. Wherein the first non-near field communication excitation current is an unbalanced signal. The first non-near field communication excitation current may include one of a cellular network signal, a wireless fidelity (WIRELESS FIDELITY, wi-Fi) signal, a global positioning system (GlobalPositioning System, GPS) signal, a Bluetooth (BT) signal. Correspondingly, the first non-near-field communication chip 241 may be a cellular communication chip for providing the cellular network signal, the first non-near-field communication chip 241 may be a Wi-Fi chip for providing the Wi-Fi signal, the first non-near-field communication chip 241 may be a GPS chip for providing the GPS signal, and the first non-near-field communication chip 241 may also be a BT chip for providing the BT signal.
Wherein the first antenna 22 is further electrically connected to the first non-near field communication chip 241. The first antenna 22 may also be used to transmit the first non-near field communication excitation current. Accordingly, the first antenna 22 may radiate a wireless signal corresponding to the first non-near field communication excitation current to the outside, thereby implementing a corresponding wireless communication function, such as a cellular communication function, a Wi-Fi communication function, a GPS communication function, a BT communication function, and the like.
In some embodiments, the first antenna 22 includes a first feed 221, a second feed 222, and a first ground 223. The first feeding terminal 221 is electrically connected to the first differential signal terminal 211 of the NFC chip 21. The second feeding end 222 is electrically connected to the first non-near-field communication chip 241. The first ground 223 is grounded.
The first feeding end 221 and the second feeding end 222 may be disposed at a distance, for example, a distance between the first feeding end 221 and the first grounding end 223 may be greater than a distance between the second feeding end 222 and the first grounding end 223.
In some embodiments, the first feeding end 221 and the second feeding end 222 may coincide. Thus, the first differential signal terminal 211 of the NFC chip 21 and the first non-near-field communication chip 241 may share a feeding terminal, so as to reduce the number of feeding terminals disposed on the first antenna 22, thereby simplifying the arrangement of the first antenna 22.
It will be appreciated that the first antenna 22 may be used to transmit both the differential excitation current provided by the NFC chip 21 and the first non-near field communication excitation current provided by the first non-near field communication chip 241, so that multiplexing of the first antenna 22 may be achieved. Accordingly, the number of antennas of the electronic device 100 can be reduced, thereby saving the internal layout space of the electronic device 100.
In some embodiments, referring to fig. 4, fig. 4 is a schematic diagram of a third structure of an antenna device 200 according to an embodiment of the present application.
Wherein the antenna device 200 further comprises a second non-near field communication chip 242. It will be appreciated that the second non-near field communication chip 242 may also be integrated on the circuit board 30 of the electronic device 100.
The second non-near field communication chip 242 is configured to provide a second non-near field communication excitation current. Wherein the second non-near field communication excitation current is an unbalanced signal. The second non-near field communication excitation current may also include one of a cellular network signal, a Wi-Fi signal, a GPS signal, a BT signal. Accordingly, the second non-near field communication chip 242 may be a cellular communication chip, a Wi-Fi chip, a GPS chip, a BT chip, or the like.
Wherein the second antenna 23 is further electrically connected to the second non-near field communication chip 242. The second antenna 23 is further configured to transmit the second non-near field communication excitation current. Accordingly, the second antenna 23 may radiate the wireless signal corresponding to the second non-near-field communication excitation current to the outside, thereby implementing a corresponding wireless communication function, for example, implementing a cellular communication function, a Wi-Fi communication function, a GPS communication function, a BT communication function, and the like.
In some embodiments, the second antenna 23 includes a third feed 231, a fourth feed 232, and a second ground 233. The third feeding terminal 231 is electrically connected to the second differential signal terminal 212 of the NFC chip 21. The fourth feeding terminal 232 is electrically connected to the second non-near field communication chip 242. The second grounding terminal 233 is grounded.
The third feeding end 231 and the fourth feeding end 232 may be disposed at a distance, for example, a distance between the third feeding end 231 and the second grounding end 233 may be greater than a distance between the fourth feeding end 232 and the second grounding end 233.
In some embodiments, the third feeding end 231 and the fourth feeding end 232 may coincide. Thus, the second differential signal terminal 212 of the NFC chip 21 and the second non-near-field communication chip 242 may share a feeding terminal. To reduce the number of feeding terminals provided on the second antenna 23 and thereby simplify the provision of the second antenna 23.
It will be appreciated that the second antenna 23 may be used to transmit both the differential excitation current provided by the NFC chip 21 and the second non-near field communication excitation current provided by the second non-near field communication chip 242, so that multiplexing of the second antenna 23 may be achieved. Accordingly, the number of antennas of the electronic device 100 can be reduced, thereby saving the internal layout space of the electronic device 100.
In addition, it is understood that in some embodiments, the antenna apparatus 200 may further include the first non-near field communication chip 241 and the second non-near field communication chip 242 at the same time, which will not be described herein.
In some embodiments, referring to fig. 5, fig. 5 is a schematic diagram of a fourth structure of an antenna device 200 according to an embodiment of the present application.
The antenna device 200 further includes a first filter circuit 251, a second filter circuit 252, a third filter circuit 253, a fourth filter circuit 254, a first matching circuit 261, a second matching circuit 262, a third matching circuit 263, and a fourth matching circuit 264. It will be appreciated that the filter circuit may also be referred to as a filter network, and the matching circuit may also be referred to as a matching network, tuning circuit, tuning network, etc.
The first filter circuit 251 is disposed between the first differential signal terminal 211 of the NFC chip 21 and the first antenna 22. The first filter circuit 251 is configured to filter a first interference signal between the first differential signal terminal 211 and the first antenna 22. The first interference signal is an electrical signal other than the differential exciting current provided by the NFC chip 21, for example, an electrical signal other than the differential signal provided by the first differential signal terminal 211.
The second filter circuit 252 is disposed between the second differential signal terminal 212 of the NFC chip 21 and the second antenna 23. The second filter circuit 252 is configured to filter a second interference signal between the second differential signal terminal 212 and the second antenna 23. The second interference signal is an electrical signal other than the differential exciting current provided by the NFC chip 21, for example, an electrical signal other than the differential signal provided by the second differential signal terminal 212.
The third filter circuit 253 is arranged between the first non-near field communication chip 241 and the first antenna 22. The third filter circuit 253 is configured to filter out a third interference signal between the first non-near field communication chip 241 and the first antenna 22. The third interference signal is an electrical signal other than the first non-near field communication excitation current provided by the first non-near field communication chip 241.
The fourth filter circuit 254 is arranged between the second non-near field communication chip 242 and the second antenna 23. The fourth filtering circuit 254 is configured to filter out a fourth interference signal between the second non-near field communication chip 242 and the second antenna 23. The fourth interference signal is an electrical signal other than the second non-near field communication excitation current provided by the second non-near field communication chip 242.
It is understood that the first filter circuit 251, the second filter circuit 252, the third filter circuit 253, and the fourth filter circuit 254 may all include a circuit composed of a series connection or a parallel connection of a capacitor and an inductor.
The first matching circuit 261 is disposed between the first antenna 22 and the first differential signal terminal 211 of the NFC chip 21, for example, between the first antenna 22 and the first filter circuit 251. The first matching circuit 261 is configured to match an impedance when the first antenna 22 transmits the differential exciting current provided by the NFC chip 21, for example, match an impedance when the first antenna 22 transmits the differential signal provided by the first differential signal terminal 211.
The second matching circuit 262 is disposed between the second antenna 23 and the second differential signal terminal 212 of the NFC chip 21, for example, between the second antenna 23 and the second filtering circuit 252. The second matching circuit 262 is configured to match an impedance of the second antenna 23 when transmitting the differential exciting current provided by the NFC chip 21, for example, match an impedance of the second antenna 23 when transmitting the differential signal provided by the second differential signal terminal 212.
Wherein, the impedance of the first matching circuit 261 is different from the impedance of the second matching circuit 262, so that the first antenna 22 and the second antenna 23 can respectively generate different resonance frequencies when transmitting the differential exciting current provided by the NFC chip 21.
The third matching circuit 263 is disposed between the first antenna 22 and the first non-near-field communication chip 241, for example, between the first antenna 22 and the third filter circuit 253. The third matching circuit 263 is used to match the impedance of the first antenna 22 when it is transmitting the first non-near field communication excitation current.
The fourth matching circuit 264 is disposed between the second antenna 23 and the second non-near field communication chip 242, for example, between the second antenna 23 and the fourth filtering circuit 254. The fourth matching circuit 264 is configured to match an impedance of the second antenna 23 when the second non-near field communication excitation current is transmitted.
It is understood that the first matching circuit 261, the second matching circuit 262, the third matching circuit 263, and the fourth matching circuit 264 may all include circuits composed of series or parallel connection of capacitors and inductors.
In some embodiments, referring to fig. 6, fig. 6 is a schematic diagram of a fifth structure of an antenna device 200 according to an embodiment of the application.
The first filter circuit 251 may include, for example, an inductor L1 and a capacitor C1. The inductor L1 is connected in series between the first differential signal terminal 211 and the first antenna 22, the capacitor C1 is connected between the inductor L1 and the first antenna 22, and the capacitor C1 is grounded.
The second filter circuit 252 may include, for example, an inductance L2 and a capacitance C2. The inductance L2 is connected in series between the second differential signal terminal 212 and the second antenna 23, the capacitance C2 is connected between the inductance L2 and the second antenna 23, and the capacitance C2 is grounded.
The third filter circuit 253 may include, for example, an inductance L3 and a capacitance C3. Wherein an inductance L3 is connected in series between the first non-near-field communication chip 241 and the first antenna 22, a capacitance C3 is connected between the inductance L3 and the first antenna 22, and the capacitance C3 is grounded.
The fourth filter circuit 254 may include, for example, an inductance L4 and a capacitance C4. Wherein an inductance L4 is connected in series between the second non-near-field communication chip 242 and the second antenna 23, a capacitance C4 is connected between the inductance L4 and the second antenna 23, and the capacitance C4 is grounded.
The first matching circuit 261 may include, for example, a capacitor C5 and a capacitor C6. A capacitor C5 is connected in series between the first differential signal terminal 211 and the first antenna 22, for example, between the first filter circuit 251 and the first antenna 22, a capacitor C6 is connected between the capacitor C5 and the first antenna 22, and the capacitor C6 is grounded. It is understood that the number of the capacitor C5 and the capacitor C6 may be plural.
The second matching circuit 262 may include, for example, a capacitor C7 and a capacitor C8. A capacitor C7 is connected in series between the second differential signal terminal 212 and the second antenna 23, for example, between the second filter circuit 252 and the second antenna 23, a capacitor C8 is connected between the capacitor C7 and the second antenna 23, and the capacitor C8 is grounded. It is understood that the number of the capacitor C7 and the capacitor C8 may be plural.
The third matching circuit 263 may include, for example, a capacitor C9 and a capacitor C10. A capacitor C9 is connected in series between the first non-near-field communication chip 241 and the first antenna 22, for example between the third filter circuit 253 and the first antenna 22, a capacitor C10 is connected between the capacitor C9 and the first antenna 22, and the capacitor C10 is grounded.
The fourth matching circuit 264 may include, for example, a capacitor C11 and a capacitor C12. A capacitor C11 is connected in series between the second non-near field communication chip 242 and the second antenna 23, for example between the fourth filter circuit 254 and the second antenna 23, a capacitor C12 is connected between the capacitor C11 and the second antenna 23, and the capacitor C12 is grounded.
It can be understood that the inductance values of the inductors L1 to L4 and the capacitance values of the capacitors C1 to C12 can be set according to actual needs.
In some embodiments, referring to fig. 7, fig. 7 is a schematic diagram of a sixth structure of an antenna device 200 according to an embodiment of the application.
The first differential signal terminal 211 of the NFC chip 21 may include a first transmitting terminal 211a and a first receiving terminal 211b, and the second differential signal terminal 212 may include a second transmitting terminal 212a and a second receiving terminal 212b. The first transmitting terminal 211a and the second transmitting terminal 212a may be configured to output differential signals. The first receiving end 211b and the second receiving end 212b may be configured to receive an externally input differential signal.
The inductance L1 is connected in series between the first transmitting end 211a and the first antenna 22. The first filter circuit 251 may further include a resistor R1 and a capacitor C13, where the resistor R1 and the capacitor C13 are disposed in series between the first receiving end 211b and the first matching circuit 261. The first matching circuit 261 may further include a resistor R2, and the resistor R2 is connected in series between the capacitor C5 and the first antenna 22.
The inductance L2 is connected in series between the second transmitting end 212a and the second antenna 23. The second filter circuit 252 may further include a resistor R3 and a capacitor C14, where the resistor R3 and the capacitor C14 are serially connected between the second receiving end 212b and the second matching circuit 262. The second matching circuit 262 may further include a resistor R4, the resistor R4 being connected in series between the capacitor C7 and the second antenna 23.
In some embodiments, referring to fig. 8, fig. 8 is a schematic diagram of a second structure of an electronic device 100 according to an embodiment of the present application.
The electronic device 100 includes a first flexible circuit board (Flexible Printed Circuit, FPC) 51 and a second flexible circuit board 52. The first flexible circuit board 51 and the second flexible circuit board 52 may be used for transmitting electric current. The first flexible circuit board 51 and the second flexible circuit board 52 may be connected to the circuit board 30 of the electronic device 100.
Wherein the first antenna 22 includes the first flexible circuit board 51, that is, the first antenna 22 may be formed by the first flexible circuit board 51.
The second antenna 23 includes the second flexible circuit board 52, that is, the second antenna 23 may be formed by the second flexible circuit board 52.
In some embodiments, the electronic device 100 further comprises a first radiation field enhancer 53 and a second radiation field enhancer 54. The materials of the first radiation field enhancing body 53 and the second radiation field enhancing body 54 may include an insulating material, for example, a ferrite layer. The ferrite layer is made of ferrite material, and the ferrite material may be nickel-copper-zinc material having a predetermined content of iron oxide, copper oxide, zinc oxide, and nickel oxide. In addition, the ferrite material may also include some auxiliary materials, such as bismuth oxide, silicon oxide, magnesium oxide, cobalt oxide, etc. with specified content. Wherein the first radiation field enhancer 53, the second radiation field enhancer 54 may be used to enhance the strength of the electromagnetic field.
Wherein the first radiation field reinforcement 53 is disposed at the first flexible circuit board 51 side. The first radiation field enhancer 53 is configured to enhance a radiation field strength when the first antenna 22 radiates the NFC signal, so that the NFC signal strength of the first antenna 22 can be improved.
The second radiation field reinforcement 54 is provided on the side of the second flexible circuit board 52. The second radiation field enhancer 54 is configured to enhance a radiation field strength when the second antenna 23 radiates the NFC signal, so that the NFC signal strength of the second antenna 23 can be improved.
In some embodiments, referring to fig. 9, fig. 9 is a schematic diagram of a third structure of an electronic device 100 according to an embodiment of the present application.
The circuit board 30 of the electronic device 100 is provided with a first printed circuit 31 and a second printed circuit 32 at intervals. The shapes of the first printed wiring 31 and the second printed wiring 32 may be a straight line shape, a spiral shape, a ring shape, an irregular shape, or the like. The first printed wiring 31 and the second printed wiring 32 may be used for transmitting electric current. Wherein the first antenna 22 comprises the first printed wiring 31 and the second antenna 23 comprises the second printed wiring 32. That is, the first antenna 22 may be formed by the first printed wiring 31, and the second antenna 23 may be formed by the second printed wiring 32.
Thus, the first antenna 22 and the second antenna 23 can be formed by printed wiring on the circuit board 30 without separately providing the first antenna 22 and the second antenna 23 on the electronic device 100, and thus the design of the antenna can be simplified.
In some embodiments, referring to fig. 10, fig. 10 is a schematic diagram of a fourth structure of an electronic device 100 according to an embodiment of the present application.
The electronic device 100 includes a metal bezel 60. The metal bezel 60 may be provided as part of the housing 20. The metal frame 60 may be, for example, an aluminum alloy frame, a magnesium alloy frame, or the like. The metal bezel 60 may be disposed around the periphery of the middle frame of the electronic device 100.
The metal frame 60 is formed with a first metal branch 61 and a second metal branch 62 at intervals. For example, a slit 63 and a slit 64 may be formed at one end of the metal bezel 60, the first metal branch 61 may be formed by the slit 63 and the slit 64, a slit 65 and a slit 66 may be formed at the other end of the metal bezel 60, and the second metal branch 62 may be formed by the slit 65 and the slit 66.
Wherein the first antenna 22 comprises the first metal stub 61 and the second antenna 23 comprises the second metal stub 62. That is, the first antenna 22 may be formed by the first metal stub 61, and the second antenna 23 may be formed by the second metal stub 62.
Accordingly, the first antenna 22 and the second antenna 23 can be formed through the metal bezel 60 without separately providing the first antenna 22 and the second antenna 23 on the electronic device 100, and thus the design of the antennas can be simplified.
In some embodiments, referring to fig. 11, fig. 11 is a schematic diagram of a fifth structure of an electronic device 100 according to an embodiment of the present application.
The electronic device 100 includes a battery cover 70. The battery cover 70 may be provided as part of the housing 20. The battery cover 70 may be made of, for example, an aluminum alloy, a magnesium alloy, or the like. The battery cover 70 covers the battery 40 of the electronic device 100.
The battery cover 70 is formed with a third metal branch 71 and a fourth metal branch 72 at intervals. For example, 2U-shaped slits may be formed in the battery cover 70, one of the U-shaped slits forming the third metal branch 71 and the other U-shaped slit forming the fourth metal branch 72. For another example, an E-shaped slit may be formed in the battery cover 70, and the third metal branch 71 and the fourth metal branch 72 may be formed through the E-shaped slit.
Wherein the first antenna 22 comprises the third metal stub 71 and the second antenna 23 comprises the fourth metal stub 72. That is, the first antenna 22 may be formed by the third metal stub 71, and the second antenna 23 may be formed by the fourth metal stub 72.
Thus, the first antenna 22 and the second antenna 23 can be formed by the battery cover 70 without separately providing the first antenna 22 and the second antenna 23 on the electronic device 100, and thus the design of the antennas can be simplified.
The antenna device and the electronic device provided by the embodiment of the application are described in detail. Specific examples are set forth herein to illustrate the principles and embodiments of the present application and are provided to aid in the understanding of the present application. Meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present application, the present description should not be construed as limiting the present application.
Claims (17)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010707001.5A CN113964551B (en) | 2020-07-21 | 2020-07-21 | Antenna device and electronic equipment |
| PCT/CN2021/098521 WO2022017017A1 (en) | 2020-07-21 | 2021-06-07 | Antenna apparatus and electronic device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010707001.5A CN113964551B (en) | 2020-07-21 | 2020-07-21 | Antenna device and electronic equipment |
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| CN113964551A CN113964551A (en) | 2022-01-21 |
| CN113964551B true CN113964551B (en) | 2025-03-04 |
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| CN118380751A (en) * | 2023-01-20 | 2024-07-23 | 华为技术有限公司 | Electronic equipment |
| CN116582157A (en) * | 2023-02-23 | 2023-08-11 | 深圳市汇顶科技股份有限公司 | Near field communication device and electronic equipment |
| CN116366100B (en) * | 2023-04-07 | 2025-07-04 | 汇顶科技(成都)有限责任公司 | NFC device, impedance matching method for NFC device, and electronic device |
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| KR102022867B1 (en) * | 2012-08-07 | 2019-09-20 | 삼성전자 주식회사 | Near field communication circuit and operating method of the same |
| CN104362425B (en) * | 2014-11-20 | 2018-04-06 | 惠州Tcl移动通信有限公司 | A kind of mobile terminal of shared NFC antenna |
| KR101743631B1 (en) * | 2015-11-16 | 2017-06-07 | 주식회사 맵스 | Apparatus for controlling communication and wireless power receiving using a single antenna and user terminal |
| CN107403995B (en) * | 2016-05-18 | 2020-04-28 | 华硕电脑股份有限公司 | Electronic device |
| CN106972237B (en) * | 2017-04-14 | 2023-10-13 | 深圳市信维通信股份有限公司 | Ultra-wideband high-performance NFC antenna system based on metal backshell |
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| CN109495138B (en) * | 2018-10-29 | 2021-01-26 | Oppo广东移动通信有限公司 | Antenna device and electronic apparatus |
| CN109660642B (en) * | 2018-12-12 | 2021-01-08 | 维沃移动通信有限公司 | Electronic equipment and control method |
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| CN111279549A (en) * | 2018-04-24 | 2020-06-12 | 华为技术有限公司 | A near field communication antenna system and terminal equipment |
| CN210805996U (en) * | 2019-12-31 | 2020-06-19 | Oppo广东移动通信有限公司 | Antenna device and electronic apparatus |
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