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WO2016165113A1 - 一种缝隙天线和移动终端 - Google Patents

一种缝隙天线和移动终端 Download PDF

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Publication number
WO2016165113A1
WO2016165113A1 PCT/CN2015/076786 CN2015076786W WO2016165113A1 WO 2016165113 A1 WO2016165113 A1 WO 2016165113A1 CN 2015076786 W CN2015076786 W CN 2015076786W WO 2016165113 A1 WO2016165113 A1 WO 2016165113A1
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WO
WIPO (PCT)
Prior art keywords
slot antenna
radiator
circuit board
adjustable unit
unit
Prior art date
Application number
PCT/CN2015/076786
Other languages
English (en)
French (fr)
Inventor
王汉阳
应李俊
张学飞
李建铭
余冬
薛亮
王磊
张志华
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to US15/566,518 priority Critical patent/US10547114B2/en
Priority to CN201580021774.5A priority patent/CN106258013B/zh
Priority to EP15888818.0A priority patent/EP3261178B1/en
Priority to PCT/CN2015/076786 priority patent/WO2016165113A1/zh
Publication of WO2016165113A1 publication Critical patent/WO2016165113A1/zh
Priority to US16/716,728 priority patent/US20200127385A1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/10—Resonant slot antennas
    • H01Q13/103—Resonant slot antennas with variable reactance for tuning the antenna
    • 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
    • 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
    • H01Q1/243—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 with built-in antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/48—Earthing means; Earth screens; Counterpoises
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/08—Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
    • H01Q13/085—Slot-line radiating ends
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/10—Resonant slot antennas
    • H01Q13/106—Microstrip slot antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/10—Resonant slot antennas
    • H01Q13/12—Longitudinally slotted cylinder antennas; Equivalent structures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/20—Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/26—Surface waveguide constituted by a single conductor, e.g. strip conductor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
    • H01Q9/42—Resonant antennas with feed to end of elongated active element, e.g. unipole with folded element, the folded parts being spaced apart a small fraction of the operating wavelength

Definitions

  • the present invention relates to the field of antenna technologies, and in particular, to a slot antenna and a mobile terminal.
  • the design of mobile terminals is becoming more and more compact, which makes the space occupied by other components including antennas in mobile terminals more and more. small.
  • more and more metal materials are used in the mobile terminal, and these metal material parts have an influence on the energy efficiency of the antenna, thereby making the design of the antenna in the mobile terminal more difficult.
  • the slot antenna has a small footprint and low sensitivity to surrounding metal materials, which has become a hot choice for antennas in mobile terminals, and has become the focus of research.
  • the generated resonant frequency can only cover a certain frequency band, and with the hybrid application of 2G, 3G and 4G networks, the slot antenna is required to cover the existing needs.
  • the frequency band therefore, how to make the slot antenna can cover the currently required frequency band becomes an urgent problem to be solved.
  • Embodiments of the present invention provide a slot antenna and a mobile terminal for generating different resonant frequencies to cover a required frequency band.
  • an embodiment of the present invention provides a slot antenna, including a system circuit board, a grounding conductor, a radiator, and a first adjustable unit;
  • the system circuit board is connected to the ground conductor to form an electrical conductor, and the radiator forms a gap with the electrical conductor; the system circuit board is provided with a feeding end, the feeding end and the radiator Electrically connected, one end of the first adjustable unit is connected to the system circuit board, the other end of the first adjustable unit is connected to the radiator, and the first adjustable unit is used for adjusting the slot antenna Resonant frequency.
  • the slot antenna further includes: a matching circuit; one end of the matching circuit is connected to a feeding end of the system circuit board, and the other end of the matching circuit is connected to the radiator.
  • the slot antenna further includes: a grounding unit; the system circuit board and the The ground conductors are electrically connected by the grounding unit to form an electrical conductor.
  • the first adjustable unit comprising a switching device and at least two reactive components, The at least two reactive components are connected in parallel to form a parallel circuit, the first end of the switching device is connected to the system circuit board, the control end of the switching device is configured to receive a switching signal, and the second end of the switching device is used Connected to one of the parallel circuits according to the switching signal, the other end of the parallel circuit is connected to the radiator.
  • the first adjustable unit further comprising a variable capacitor, one end of the variable capacitor The system circuit board is connected, and the other end of the variable capacitor is connected to the first end of the switching device.
  • a fifth possible implementation manner of the first aspect is further provided, where the slot antenna further includes: a second adjustable unit;
  • One end of the second adjustable unit is electrically connected to the system circuit board, the other end of the second adjustable unit is electrically connected to the radiator, and the second adjustable unit is disposed at the feeding The end is bounded to the side opposite the first adjustable unit.
  • the second adjustable unit includes a switching device and at least two reactive components, the at least two One of the switching elements is connected in parallel to form a parallel circuit, one end of the switching device is connected to the system circuit board, the control end of the switching device is configured to receive a switching signal, and the second end of the switching device is configured to be used according to the switching signal Connected to one of the parallel circuits, the other end of which is connected to the radiator.
  • the second adjustable unit further includes a variable capacitor, one end of the variable capacitor The system circuit board is connected, and the other end of the variable capacitor is connected to the first end of the switching device.
  • the gap formed by the radiator and the electric conductor is flat.
  • the gap formed by the radiator and the electric conductor is bent.
  • a tenth possible implementation of the first aspect is also provided, the reactive component being an inductive reactive component or a capacitive reactive component.
  • the embodiment of the present invention further provides a mobile terminal, including a radio frequency processing unit, a baseband processing unit, and the slot antenna described in the first aspect or any possible implementation manner of the first aspect;
  • the radio frequency processing unit is electrically connected to a feeding end of the system circuit board;
  • the slot antenna is configured to transmit the received wireless signal to the radio frequency processing unit, or convert the transmit signal of the radio frequency processing unit into an electromagnetic wave, where the radio frequency processing unit is configured to receive the wireless
  • the signal is subjected to frequency selection, amplification, down conversion processing, and converted into an intermediate frequency signal or a baseband signal, and sent to the baseband processing unit, or used to upconvert the baseband signal or the intermediate frequency signal sent by the baseband processing unit.
  • Embodiments of the present invention provide a slot antenna and a mobile terminal.
  • the slot antenna includes a system circuit board, a grounding conductor, a radiator, and a first adjustable unit.
  • the system circuit board is connected with the ground conductor to form an electrical conductor, a radiator and an electrical conductor.
  • a gap is formed on the system board;
  • a feeding end is disposed on the system circuit board, and the feeding end is electrically connected to the radiator; one end of the first adjustable unit is connected to the system circuit board, and the other end of the first adjustable unit is connected with the radiator,
  • An adjustable unit is used to adjust the resonant frequency of the slot antenna.
  • the resonant frequency of the slot antenna is adjusted by the first adjustable unit, so that the slot antenna can generate different slot-type resonant frequencies to cover the required frequency band.
  • FIG. 1 is a schematic structural diagram of a slot antenna according to an embodiment of the present disclosure
  • Figure 2 is a front elevational view of the slot antenna shown in Figure 1;
  • Figure 3 is an opposite view of the slot antenna shown in Figure 1;
  • FIG 4 is a simplified diagram of the slot antenna shown in Figure 1;
  • FIG. 5 is a schematic structural diagram of another slot antenna according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram 1 of a first adjustable unit according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram 2 of a first adjustable unit according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of another slot antenna according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic diagram 1 of a slot shape of a slot antenna according to an embodiment of the present invention.
  • FIG. 10 is a second schematic diagram of a slot shape of a slot antenna according to an embodiment of the present disclosure.
  • FIG. 11 is a third schematic diagram of a slot shape of a slot antenna according to an embodiment of the present disclosure.
  • FIG. 12 is a schematic structural diagram of a first adjustable unit used in a slot antenna according to Embodiment 2 of the present invention.
  • FIG. 13 is a schematic structural diagram of a matching circuit used in a slot antenna according to Embodiment 2 of the present invention.
  • FIG. 14 is a graph showing a simulated reflection coefficient obtained by using a first adjustable unit in a slot antenna according to Embodiment 2 of the present invention, corresponding to different inductance values or capacitance values;
  • FIG. 15 is a schematic diagram of a simulated electric field intensity distribution when a slot antenna adopts a first adjustable unit according to Embodiment 2 of the present invention.
  • FIG. 16 is a radiation efficiency diagram of an antenna obtained by simulating different inductance values or capacitance values when a slot antenna adopts a first adjustable unit according to Embodiment 2 of the present invention
  • FIG. 17 is a diagram showing radiation efficiency of an antenna under different test models when a slot antenna is switched to L2 according to Embodiment 2 of the present invention.
  • FIG. 19 is a graph showing simulated reflection coefficient of a slot antenna using a first adjustable unit and a second adjustable unit according to Embodiment 2 of the present invention.
  • FIG. 20 is a schematic diagram of a mobile terminal according to Embodiment 3 of the present invention.
  • the slot antenna includes: a system circuit board 1 (point filling portion in FIG. 1) and a ground conductor 2 (double oblique line filling portion in FIG. 1) ), a radiator 3 (black filled portion in Fig. 1) and a first adjustable unit 4 (single oblique line filling portion in Fig. 1).
  • the system circuit board 1 is connected to the grounding conductor 2 to form an electrical conductor 100.
  • the radiator 3 and the electrical conductor 100 form a gap 5.
  • the system circuit board 1 is provided with a feeding end 6, and the feeding end 6 is electrically connected to the radiator 3.
  • One end of the first adjustable unit 4 is connected to the system circuit board 1, and the other end of the first adjustable unit 4 is connected to the radiator 3, and the first adjustable unit 4 is used to adjust the resonant frequency of the slot antenna.
  • the resonant frequency of the slot antenna is adjusted by the first adjustable unit 4, so that the slot antenna can generate different resonant frequencies, and both are slot-type resonances to cover the required frequency band.
  • the slot antenna further includes: a matching circuit 7, one end of the matching circuit 7 is electrically connected to the feeding end 6 of the system circuit board 1, and the other end of the matching circuit 7 is electrically connected to the radiator 3. connection. That is to say, the feed end 6 of the system board 1 is electrically connected to the radiator 3 through the matching circuit 7. Feeding through the matching circuit 7 is mainly used to adjust the impedance matching of the slot antenna, so that the slot antenna can excite sufficient bandwidth to cover the required frequency band requirements.
  • the above-mentioned system circuit board 1 and the ground conductor 2 may be electrically connected to each other through the grounding unit 8 shown in FIG. 3 to form the above-mentioned electric conductor 100.
  • the first adjustable unit 4 includes a switching device 41 and at least two reactive elements 42 and 43, and at least two reactive elements 42 and 43 are formed in parallel. a parallel circuit, the first end A of the switching device 41 is connected to the system circuit board 1, the control terminal C of the switching unit 41 is for receiving a switching signal, and the second end B of the switching unit 41 is used according to the switching signal and the parallel circuit One reactance element is connected, and the other end of the parallel circuit is connected to the radiator 3.
  • the switching device 41 connects the second end B of the switching device 41 to a reactive component of the parallel circuit according to the switching signal received by the control terminal C, so that the slot antenna generates a resonant frequency corresponding to the connected reactance component.
  • the slot antenna generates different resonant frequencies.
  • the first adjustable unit is used to adjust the resonant frequency of the slot antenna, when the switching device 41 is connected to different reactance components, Resonance will occur at different frequency points.
  • the reactive component in the first adjustable unit 4 may be a capacitive reactance component or an inductive reactance component. Therefore, the first adjustable unit 4 in FIG. 6 includes two reactive components, and the reactance component 42 is electrically
  • the inductive reactance element and the reactance element 43 are exemplified for the capacitive reactance element, and the first adjustable unit including other numbers and types (capacitive or inductive type) is also within the scope of the present invention, and the number and type of the reactance element are It can be determined according to the frequency band that needs to be covered.
  • the first adjustable unit 4 may further include a variable capacitor 44.
  • One end of the variable capacitor 44 is connected to the system circuit board 1.
  • the other end of the variable capacitor 44 and the switch device 41 are provided.
  • One end A is connected. Since the capacitance of the variable capacitor 44 can be adjusted, the resonance frequency generated by the slot antenna can be adaptively adjusted to a desired frequency band by adjusting the capacitance of the variable capacitor 44.
  • the slot antenna further includes: a second adjustable unit 9, wherein one end of the second adjustable unit 9 and the system circuit board 1 Electrically connected, the other end of the second adjustable unit 9 is electrically connected to the radiator 3; the second adjustable unit 9 is disposed at the feed end 6 and the first Adjust the opposite side of unit 4.
  • the second adjustable unit 9 can adopt the same architecture as the first adjustable unit 4. Therefore, for the structure of the second adjustable unit 9, reference may be made to the description of the first adjustable unit 4 in FIGS. 6 and 7. I will not repeat them here.
  • the reactance component in the second adjustable unit 9 may be a capacitive reactance component or an inductive reactance component, and different reactive components may be selected according to actual conditions.
  • the slit 5 may have a flat shape or a bent shape.
  • 1 to 5 and FIG. 8 are schematic views showing a slit 5 formed by the radiator 3 and the electric conductor 100 in a straight line
  • FIGS. 9 to 11 are a slit 5 formed by the radiator 3 and the electric conductor 100. schematic diagram. It should be noted that the embodiment of the present invention is only described by taking the above-mentioned linear or curved shape as an example, and the slits of other shapes also belong to the scope claimed by the embodiments of the present invention.
  • the embodiment of the invention provides a slot antenna, which includes a system circuit board, a grounding conductor, a radiator and a first adjustable unit.
  • the system circuit board is connected with the grounding conductor to form an electrical conductor, and the radiator and the electrical conductor form a gap.
  • the system circuit board is provided with a feeding end, the feeding end is electrically connected with the radiator, one end of the first adjustable unit is connected with the system circuit board, and the other end of the first adjustable unit is connected with the radiator, the first adjustable The unit is used to adjust the resonant frequency of the slot antenna.
  • the resonant frequency of the slot antenna is adjusted by the first adjustable unit, so that the slot antenna can generate different slot-type resonant frequencies to cover the required frequency band.
  • the embodiment of the present invention provides a slot antenna for a specific application in a mobile phone.
  • the structure of the slot antenna can be referred to FIG. 5, and the double grounding conductor 2 of FIG.
  • the oblique line filling portion is regarded as the long side of the mobile phone, and the black filling portion on the front side of the radiator in FIG. 5 is regarded as the short side of the mobile phone.
  • the feeding end 6 is disposed within a range of about 7 mm from the middle line of the short side of the mobile phone;
  • one end of the capacitor C4 is connected to one end of the inductor L3, and the other end is grounded;
  • the width of the radiator 3 is 6.5 mm, and the width of the slit 5 is 1.5 mm as an example.
  • a simulation reflection coefficient curve obtained by a slot antenna corresponding to different inductance values or capacitance values according to an embodiment of the present invention wherein the horizontal axis represents a frequency (Frequency, referred to as Freq), and the unit is gigahertz (GHz), the ordinate indicates the reflection coefficient, and the unit is decibel (dB).
  • Freq frequency
  • GHz gigahertz
  • dB decibel
  • the simulated reflection coefficient curve diagram of the slot antenna is a straight line indicating a simulated reflection coefficient curve diagram of the slot antenna when the switching device is connected to the inductor L1, and a simulated reflection coefficient curve diagram of the slot antenna when the switching device is connected to the inductor L2 by a chain line.
  • the slot antenna when the switching device is connected to different inductors or capacitors, the slot antenna generates four slot resonances, and since the first adjustable unit is disposed in the low frequency and large electric field region in the embodiment of the present invention, Therefore, when the switching device is connected to different inductors or capacitors, the resonant frequency generated by the slot antenna in the low frequency region is different, and the resonant frequency in the high frequency region is substantially uniform, so that different inductors are connected through the switching device. Or a capacitor that allows the slot antenna to generate different resonant frequencies to meet the required frequency coverage.
  • the four distinct resonances in Figure 15 are representative of four resonant modes, and the modalities in Figure 14 are analyzed by the simulated electric field strength profile shown in Figure 15. Based on the transmission line theory, the conclusions that can be drawn are as follows: (a) Mode 1 at low frequency is Mode 1 Low Band (1/4 wavelength); (b) Mode at 2 is half wavelength Mode 2 High Band (1/2 wavelength); (c) Mode 3 High Band (1/2 wavelength) at high frequency; (d) Mode 4 at high frequency It is a three-quarter wavelength resonance (Mode 4 High Band (3/4 wavelength)). As shown in FIG. 14 and FIG. 15, the four slot-type resonances excited by the slot antenna provided by the embodiment of the present invention, in combination with the first adjustable unit, can cover the commonly required LTE frequency band.
  • FIG. 16 is a diagram showing an antenna radiation efficiency obtained by simulating a slot antenna corresponding to different inductance values or capacitance values according to an embodiment of the present invention, wherein a horizontal axis represents a frequency in units of gigahertz (GHz), and an ordinate.
  • GHz gigahertz
  • the slot antenna Represents the antenna efficiency (Radiation Efficiency), the unit is decibel (dB);
  • the linear antenna plus circle diagram shows the simulated antenna efficiency curve of the slot antenna when the switching device is connected to the capacitor C1, and the straight line plus triangle indicates the slot antenna of the switching device when connecting the capacitor C1
  • Simulate the antenna efficiency curve use a straight line to indicate the simulated antenna efficiency curve of the slot antenna when the switch device is connected to the inductor L1, and use a dotted line to indicate the simulated antenna efficiency curve of the slot antenna when the switch device is connected to the inductor L2.
  • the radiation efficiency of the slot antenna is tested for different test models.
  • the test result is shown in Figure 17, where the abscissa indicates the frequency in megahertz (MHz). ), the ordinate indicates the antenna efficiency, the unit is respectively (dB); the straight line with hexagon indicates the radiation efficiency diagram of the slot antenna in the free space (FS) test state, and the line with a square indicates the right hand (Beside) Head and Hand Right Side (BHHR) is the radiation efficiency diagram of the slot antenna in the test state.
  • the straight line crosses the radiation efficiency diagram of the slot antenna in the right hand (HR) test state.
  • the slot antenna further includes the second adjustable unit 9, at this time, the slot A schematic diagram of the structure of the antenna can be seen in FIG.
  • the coordinate indicates the reflection coefficient in decibels (dB); the straight line indicates the simulated reflection coefficient curve of the slot antenna when the switching device in the second adjustable unit is connected to the inductor L4, and the second adjustable unit is indicated by a broken line.
  • the simulated reflection coefficient curve diagram of the slot antenna when the switch device is connected to the inductor L5, and the simulated reflection coefficient curve of the slot antenna when the switch device is connected to the inductor L6 in the second adjustable unit is indicated by a chain line. It can be seen from Fig. 19 that when different inductance values are selected, the antenna modal position also changes, and the use of two adjustable units at the same time can provide more adjustment mechanisms than only a single adjustable unit, which is convenient for the antenna engineer to Different antenna requirements are designed.
  • the resonant frequency generated by the slot antenna is generated by the slot, which is determined by the length of the slot. Therefore, in order to ensure that the slot antenna can have good antenna characteristics in the low frequency mode, Therefore, the feed end is placed in the area near the middle line of the short side of the mobile phone.
  • the first adjustable unit 4, the second adjustable unit 9, and the matching circuit 7 are only one implementation manner listed in the embodiment of the present invention, and the first adjustable unit 4 and the second adjustable
  • the inductance and capacitance connection manner of the unit 9 and the matching circuit 7 are also the ranges to be protected by the embodiments of the present invention.
  • the embodiment of the invention provides a slot antenna, which includes a system circuit board, a grounding conductor, a radiator and a first adjustable unit.
  • the system circuit board is connected with the grounding conductor to form an electrical conductor, and the radiator and the electrical conductor form a gap.
  • the system circuit board is provided with a feeding end, the feeding end is electrically connected with the radiator, one end of the first adjustable unit is connected with the system circuit board, and the other end of the first adjustable unit is connected with the radiator, the first adjustable The unit is used to adjust the resonant frequency of the slot antenna.
  • the resonant frequency of the slot antenna is adjusted by the first adjustable unit, so that the slot antenna can generate different slot-type resonant frequencies to cover the required frequency band.
  • An embodiment of the present invention provides a mobile terminal.
  • the mobile terminal includes a radio frequency processing unit, a baseband processing unit, and the first embodiment or the second embodiment.
  • a slot antenna refer to the slot antennas in the first embodiment and the second embodiment, and details are not described herein.
  • the RF processing unit 10 is electrically connected to the feeding end 6 of the system circuit board 1.
  • the slot antenna is used to transmit the received wireless signal to the RF processing unit 10, or convert the transmitting signal of the RF processing unit 10 into an electromagnetic wave. Going out; the RF processing unit 10 is configured to perform frequency selection, amplification, and down conversion processing on the wireless signal received by the slot antenna, and convert it into an intermediate frequency signal or a baseband signal, and send it to the baseband processing unit 20, or used to process the baseband.
  • the baseband signal or the intermediate frequency signal transmitted by the unit 20 is up-converted, amplified, and transmitted through the slot antenna; the baseband processing unit 20 processes the received intermediate frequency signal or baseband signal.
  • the mobile terminal may be a communication device used in mobile, and may be a mobile phone, a tablet computer, a data card, etc., of course, not limited thereto.
  • An embodiment of the present invention provides a mobile terminal, where the mobile terminal includes a radio frequency processing unit, a baseband processing unit, and a slot antenna, where the slot antenna includes a system circuit board, a grounding conductor, a radiator, and a first adjustable unit, and the system circuit board Connecting with the grounding conductor to form an electrical conductor, the radiator body and the electrical conductor form a gap; the system circuit board is provided with a feeding end, the feeding end is electrically connected with the radiator, and one end of the first adjustable unit is connected with the system circuit board, The other end of an adjustable unit is connected to the radiator, and the first adjustable unit is used to adjust the resonant frequency of the slot antenna.
  • the resonant frequency of the slot antenna is adjusted by the first adjustable unit, so that the slot antenna can generate different slot-type resonant frequencies to cover the required frequency band.

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Abstract

本发明提供了一种缝隙天线和移动终端，涉及天线技术领域，用于产生不同的谐振频率，以覆盖所需的频段。该缝隙天线包括：系统电路板、接地导体、辐射体和第一可调单元；系统电路板与接地导体连接形成电导体，辐射体与电导体相对形成缝隙；系统电路板上设置有馈电端，馈电端与辐射体电连接，第一可调单元的一端与系统电路板连接，第一可调单元的另一端与辐射体连接，第一可调单元用于调节缝隙天线的谐振频率。

Description

一种缝隙天线和移动终端 技术领域
本发明涉及天线技术领域，尤其涉及一种缝隙天线和移动终端。
背景技术
随着移动终端的日益普及，以及用户对移动终端的薄型化的需求，人们对于移动终端的设计也越来越紧凑，这就使得移动终端中包括天线在内的其他部件占用的空间越来越小。同时，为了使得移动终端更加耐用，越来越多的金属材料被使用在移动终端中，而这些金属材质部分对天线的能效又会产生影响，因此，使得对移动终端中天线的设计变得更加困难。而缝隙天线以其占用空间小，对周遭金属材质较低的敏感性，成为移动终端中天线炙手可热的选择，也成为人们研究的重点。
在现有技术中，当缝隙天线被设定好之后，所产生的谐振频率仅能覆盖某一频段，而随着2G、3G和4G网络的混合应用，要求缝隙天线能够覆盖到现有所需的频段，因此，如何使得缝隙天线能够涵盖目前所需的频带成为急需解决的问题。
发明内容
本发明实施例提供了一种缝隙天线和移动终端，用于产生不同的谐振频率，以覆盖所需的频段。
为达到上述目的，本发明的实施例采用如下技术方案：
第一方面，本发明实施例提供了一种缝隙天线，包括系统电路板、接地导体、辐射体和第一可调单元；
所述系统电路板与所述接地导体连接形成电导体，所述辐射体与所述电导体相对形成缝隙；所述系统电路板上设置有馈电端，所述馈电端与所述辐射体电连接，所述第一可调单元的一端与所述系统电路板连接，所述第一可调单元的另一端与所述辐射体连接，所述第一可调单元用于调节缝隙天线的谐振频率。
在第一方面的第一种可能的实现方式中，所述缝隙天线还包括： 匹配电路；所述匹配电路的一端与所述系统电路板的馈电端连接，所述匹配电路的另一端与所述辐射体连接。
在第一方面或第一方面的第一种可能的实现方式中，还提供了第一方面的第二种可能的实现方式，所述缝隙天线还包括：接地单元；所述系统电路板与所述接地导体通过所述接地单元电连接形成电导体。
在第一方面或第一方面的前两种可能的实现方式中，还提供了第一方面的第三种可能的实现方式，所述第一可调单元包括开关装置和至少两个电抗元件，所述至少两个电抗元件并联形成并联电路，所述开关装置的第一端与所述系统电路板连接，所述开关装置的控制端用于接收切换信号，所述开关装置的第二端用于根据所述切换信号与所述并联电路中的一个电抗元件连接，所述并联电路的另一端与所述辐射体连接。
在第一方面的第三种可能的实现方式中，还提供了第一方面的第四种可能的实现方式，所述第一可调单元还包括可变电容器，所述可变电容器的一端与所述系统电路板连接，所述可变电容器的另一端与所述开关装置的第一端连接。
在第一方面或第一方面的前四种可能的实现方式中，还提供了第一方面的第五种可能的实现方式，所述缝隙天线还包括：第二可调单元；
所述第二可调单元的一端与所述系统电路板电连接，所述第二可调单元的另一端与所述辐射体电连接，所述第二可调单元设置在以所述馈电端为界、与所述第一可调单元相对的一侧。
在第一方面的第五种可能的实现方式中，还提供了第一方面的第六种可能的实现方式，所述第二可调单元包括开关装置和至少两个电抗元件，所述至少两个电抗元件并联形成并联电路，所述开关装置的一端与所述系统电路板连接，所述开关装置的控制端用于接收切换信号，所述开关装置的第二端用于根据所述切换信号与所述并联电路中的一个电抗元件连接，所述并联电路的另一端与所述辐射体连接。
在第一方面的第六种可能的实现方式中，还提供了第一方面的第七种可能的实现方式，所述第二可调单元还包括可变电容器，所述可变电容器的一端与所述系统电路板连接，所述可变电容器的另一端与所述开关装置的第一端连接。
在第一方面的第八种可能的实现方式中，所述辐射体与所述电导体相对形成的缝隙呈平直状。
在第一方面的第九种可能的实现方式中，所述辐射体与所述电导体相对形成的缝隙呈弯折状。
在第一方面的第三种或第六种可能的实现方式中，还提供了第一方面的第十种可能的实现方式，所述电抗元件为电感性电抗元件或电容性电抗元件。
第二方面，本发明实施例还提供了一种移动终端，包括射频处理单元、基带处理单元和第一方面或第一方面的任一可能的实现方式中所述的缝隙天线；
所述射频处理单元与所述系统电路板上的馈电端电性连接；
所述缝隙天线用于将接收到的无线信号传输给所述射频处理单元，或者将射频处理单元的发射信号转换为电磁波发送出去；所述射频处理单元用于对所述缝隙天线接收到的无线信号进行选频、放大、下变频处理，并将其转换成中频信号或基带信号发送给所述基带处理单元，或者，用于将所述基带处理单元发送的基带信号或中频信号经过上变频、放大，通过所述缝隙天线发送出去；所述基带处理单元，对接收到的所述中频信号或所述基带信号进行处理。
本发明实施例提供了一种缝隙天线和移动终端，该缝隙天线包括系统电路板、接地导体、辐射体和第一可调单元，系统电路板与接地导体连接形成电导体，辐射体与电导体相对形成缝隙；系统电路板上设置有馈电端，馈电端与辐射体电连接，第一可调单元的一端与系统电路板连接，第一可调单元的另一端与辐射体连接，第一可调单元用于调节缝隙天线的谐振频率。本发明实施例提供的缝隙天线，通过第一可调单元对缝隙天线的谐振频率进行调节，使得该缝隙天线可以产生不同的缝隙式谐振频率，以覆盖所需的频段。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见的，下面描述中的附图仅仅是本发明的一些实施例，对于本领域技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明实施例提供的一种缝隙天线的结构示意图；
图2为针对图1所示的缝隙天线的正视图；
图3为针对图1所示的缝隙天线的反视图；
图4为针对图1所示的缝隙天线的简化图；
图5为本发明实施例提供的另一种缝隙天线的结构示意图；
图6为本发明实施例提供的第一可调单元的架构示意图一；
图7为本发明实施例提供的第一可调单元的架构示意图二；
图8为本发明实施例提供的另一种缝隙天线的结构示意图；
图9为本发明实施例提供的缝隙天线的缝隙形状示意图一；
图10为本发明实施例提供的缝隙天线的缝隙形状示意图二；
图11为本发明实施例提供的缝隙天线的缝隙形状示意图三；
图12为本发明实施例二中缝隙天线所采用的第一可调单元的架构示意图；
图13为本发明实施例二中缝隙天线所采用的匹配电路的架构示意图；
图14本发明实施例二中缝隙天线采用第一可调单元时，对应不同的电感值或电容值得到的仿真反射系数曲线图；
图15为本发明实施例二中缝隙天线采用第一可调单元时的仿真电场强度分布图；
图16为本发明实施例二中缝隙天线采用第一可调单元时对应不同的电感值或电容值时仿真得到的天线辐射效率图；
图17为本发明实施例二中缝隙天线切换到L2时，不同测试模型下的天线辐射效率图；
图18为本发明实施例二中缝隙天线所采用的第二可调单元的架 构示意图；
图19为本发明实施例二中缝隙天线采用第一可调单元和第二可调单元时仿真反射系数曲线图；
图20为本发明实施例三提供的一种移动终端的示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
实施例一
本发明实施例提供了一种缝隙天线，结合图1-图4所示，该缝隙天线包括：系统电路板1(图1中点填充部分)、接地导体2(图1中双斜线填充部分)、辐射体3(图1中黑色填充部分)和第一可调单元4(图1中单斜线填充部分)。其中，系统电路板1与接地导体2连接形成电导体100，辐射体3与电导体100相对形成缝隙5，系统电路板1上设置有馈电端6，馈电端6与辐射体3电连接；第一可调单元4的一端与系统电路板1连接，第一可调单元4的另一端与辐射体3连接，第一可调单元4用于调节缝隙天线的谐振频率。
本发明实施例所提供的缝隙天线，通过第一可调单元4对缝隙天线的谐振频率进行调节，使得该缝隙天线可以产生不同的谐振频率，且均为缝隙式谐振，以覆盖所需的频段。
可选的，如图5所示，该缝隙天线还包括：匹配电路7，该匹配电路7的一端与系统电路板1的馈电端6电连接，匹配电路7的另一端与辐射体3电连接。也就是说，系统电路板1的馈电端6通过该匹配电路7与辐射体3电连接。通过匹配电路7进行馈入主要用以调整缝隙天线的阻抗匹配，使缝隙天线可以激发足够的频宽以涵盖所需的频段要求。
另外，如图5所示，上述系统电路板1与接地导体2可以通过图3所示的接地单元8电连接形成上述电导体100，该接地单元8 可以为多个。
为了更加清楚地说明上述第一可调单元4，如图6所示，该第一可调单元4包括开关装置41和至少两个电抗元件42和43，至少两个电抗元件42和43并联形成并联电路，开关装置41的第一端A与系统电路板1连接，开关单元41的控制端C用于接收切换信号，开关单元41的第二端B用于根据该切换信号与并联电路中的一个电抗元件连接，并联电路的另一端与辐射体3连接。
这样，开关装置41根据控制端C接收的切换信号，使得开关装置41的第二端B与并联电路中的某个电抗元件连接，以使得缝隙天线产生与连接的电抗元件相应的谐振频率。当并联电路中电抗元件的电抗不同时，缝隙天线会产生不同的谐振频率，另外，由于第一可调单元用于调节缝隙天线的谐振频率，因此，当开关装置41连接不同的电抗元件时，会在不同的频率点产生谐振。
对于第一可调单元4中的电抗元件可以为电容性电抗元件，也可以为电感性电抗元件，因此，图6中以第一可调单元4包含两个电抗元件，且电抗元件42为电感性电抗元件、电抗元件43为电容性电抗元件进行示例，对于包含其他数量和类型(电容型或电感型)的第一可调单元也属于本发明所要保护的范围，对于电抗元件的数量和类型可以根据需要涵盖的频段来确定。
进一步的，如图7所示，该第一可调单元4还可以包括可变电容器44，可变电容器44的一端与系统电路板1连接，可变电容器44的另一端与开关装置41的第一端A连接。由于可变电容器44的电容可以进行调节，因此，通过对可变电容器44的电容调节，可以适应性的将缝隙天线产生的谐振频率调节到期望的频带。
进一步的，为了使缝隙天线可以满足更多频率的涵盖要求，如图8所示，该缝隙天线还包括：第二可调单元9，其中，第二可调单元9的一端与系统电路板1电连接，第二可调单元9的另一端与辐射体3电连接；第二可调单元9设置在以馈电端6为界、与第一可 调单元4相对的一侧。
其中，第二可调单元9可以采用和第一可调单元4相同的架构，因此，对于第二可调单元9的结构可以参考图6和图7中对第一可调单元4的描述，在此不再赘述。另外，第二可调单元9中的电抗元件可以为电容性电抗元件，也可以为电感性电抗元件，可以根据实际情况选取不同的电抗元件。
进一步的，对于辐射体3与电导体相100对形成的缝隙5，该缝隙5的形状可以呈平直状，也可以呈弯折状。其中，图1-图5以及图8为辐射体3与电导体100形成的缝隙5呈直线状的示意图，图9-图11为辐射体3与电导体100形成的缝隙5呈弯折状的示意图。需要说明的是，本发明实施例仅以上述直线状或弯折状为例进行说明，对于其他形状的缝隙也属于本发明实施例所要求保护的范围。
本发明实施例提供了一种缝隙天线，该缝隙天线包括系统电路板、接地导体、辐射体和第一可调单元，系统电路板与接地导体连接形成电导体，辐射体与电导体相对形成缝隙；系统电路板上设置有馈电端，馈电端与辐射体电连接，第一可调单元的一端与系统电路板连接，第一可调单元的另一端与辐射体连接，第一可调单元用于调节缝隙天线的谐振频率。本发明实施例提供的缝隙天线，通过第一可调单元对缝隙天线的谐振频率进行调节，使得该缝隙天线可以产生不同的缝隙式谐振频率，以覆盖所需的频段。
实施例二
针对实施例一所述的缝隙天线，本发明实施例提供了一种具体的应用在手机中的缝隙天线，该缝隙天线的结构示意图可参考图5所示，将图5中接地导体2的双斜线填充部分视为手机的长边，将图5中辐射体中前侧黑色填充部分视为手机的短边。其中，馈电端6设置在距离手机短边的中间线约7mm的范围内即可；第一可调单元4中包含两个电感(L1＝40nH和L2＝80nH)和两个电容(C1＝0.5pF和C2＝0.9pF)，具体的连接方式如图12所示；匹配电路7中包含一个电感(L3＝1.2nH)和两个电容(C3＝1.3pF和C4＝2.5pF)，具体连 接方式如图13所示，电感L3的一端与馈电端6(Feed)连接，另一端与电容C3的一端连接，电容C3的另一端与辐射体3(图13中用倒三角所示)连接，电容C4的一端与电感L3的一端连接，另一端接地；辐射体3的宽度为6.5mm，缝隙5的宽度为1.5mm为例进行说明。
如图14所示，为本发明实施例提供的缝隙天线对应不同的电感值或电容值得到的仿真反射系数曲线图，其中，横轴表示频率(Frequency，简称Freq)，单位为千兆赫兹(GHz)，纵坐标表示反射系数(reflection coefficient)，单位为分贝(dB)；用直线加圆圈表示开关装置连接电容C1时缝隙天线的仿真反射系数曲线图，用直线加三角形表示开关装置连接电容C1时缝隙天线的仿真反射系数曲线图，用直线表示开关装置连接电感L1时缝隙天线的仿真反射系数曲线图，用点划线表示开关装置连接电感L2时缝隙天线的仿真反射系数曲线图。从图14中可以看出，当开关装置连接不同的电感或电容时，该缝隙天线均产生四个缝隙式谐振，而且，由于本发明实施例中第一可调单元设置在低频大电场区域，因此，当开关装置在连接不同的电感或电容时，该缝隙天线在低频区域所产生的谐振频率是不同的，在高频区域的谐振频率基本是一致的，因此，通过开关装置连接不同的电感或电容，可以使得缝隙天线能够产生不同的谐振频率，以达到覆盖所需频率的需求。
图15中四个明显的谐振代表具有四个谐振模态产生，藉由图15中所示的仿真电场强度分布图来对图14中的模态进行分析。基于传输线理论，可以得到的结论如下：(a)位于低频的模态一为四分之一波长谐振(Mode 1Low Band(1/4wavelength))；(b)位于高频的模态二为半波长谐振(Mode 2High Band(1/2wavelength))；(c)位于高频的模态三为四分之一波长谐振(Mode 3High Band(1/2wavelength))；(d)位于高频的模态四为四分之三波长谐振(Mode 4High Band(3/4wavelength))。通过图14和图15所示，本发明实施例所提供的缝隙天线激发的四个缝隙式谐振，结合第一可调单元可以涵盖常见所需的LTE频段。
如图16所示，为本发明实施例提供的缝隙天线对应不同的电感值或电容值时仿真得到的天线辐射效率图，其中，横轴表示频率，单位为千兆赫兹(GHz)，纵坐标表示天线效率(Radiation Efficiency)，单位为分贝(dB)；用直线加圆图表示开关装置连接电容C1时缝隙天线的仿真天线效率曲线图，用直线加三角形表示开关装置连接电容C1时缝隙天线的仿真天线效率曲线图，用直线表示开关装置连接电感L1时缝隙天线的仿真天线效率曲线图，用点划线表示开关装置连接电感L2时缝隙天线的仿真天线效率曲线图。由图16可以看出，本发明实施例所提供的缝隙天线，通过连接第一可调单元中不同的电感或电容，得到的天线频率能够满足实际应用的需求。当然，该缝隙天线在高频处的天线效率也能够满足实际需求。
当第一可调单元设定切换到L2＝80nH时，针对不同的测试模型对缝隙天线的辐射效率进行测试，测试结果如图17所示，其中，横坐标表示频率，单位为兆赫兹(MHz)，纵坐标表示天线效率，单位为分别(dB)；直线带六角形表示处于自由空间(Free space，简称FS)测试状态时的缝隙天线辐射效率图，直线带正方形表示处于右头手(Beside Head and Hand Right Side，简称BHHR)测试状态时的缝隙天线辐射效率图，直线带交叉表示处于右手握持(Hand Right，简称HR)测试状态时的缝隙天线辐射效率图，直线带圆形表示处于右头(Beside Head Right Side，简称BHR)测试状态时的缝隙天线辐射效率图，直线表示处于左头(Beside Head Left Side，简称BHL)测试状态的缝隙天线辐射效率图。从图17可以看出，当第一可调单元切换到L2＝80nH时，在不同的测试模型下，该缝隙天线均具有不错的天线辐射效率。
进一步的，在该缝隙天线中包含图12所示的第一可调单元4和图13所示的匹配电路7的基础上，该缝隙天线还包含第二可调单元9时，此时，缝隙天线的结构示意图可参考图8所示。其中，第二可调单元包含开关单元91和三个电感(L4＝1nH、L5＝2nH、L6＝3nH)，具体连接方式如图18所示。
如图19所示，为当第一可调单元4设定切换到C2＝0.9pF，第 二可调单元9通过开关器件选择电感L4、电感L5或者电感L6时，得到的仿真反射系数曲线图，其中，横轴表示频率(Frequency，简称Freq)，单位为千兆赫兹(GHz)，纵坐标表示反射系数(reflection coefficient)，单位为分贝(dB)；用直线表示第二可调单元中的开关装置连接电感L4时缝隙天线的仿真反射系数曲线图，用虚线表示第二可调单元中的开关装置连接电感L5时缝隙天线的仿真反射系数曲线图，用点划线表示第二可调单元中的开关装置连接电感L6时缝隙天线的仿真反射系数曲线图。由图19可以看出，当选择不同的电感值时，天线模态位置也发生改变，且同时使用两个可调单元可以比只有单一可调单元提供更多元的调整机制，方便天线工程师根据不同的天线需求进行设计。
需要说明的是，在本发明实施例中，缝隙天线所产生的谐振频率均为缝隙产生的，由缝隙的长度所决定，因此，为了保证缝隙天线能够在低频模态能够具有良好的天线特性，所以，将馈电端设置在手机短边靠近中间线的区域。另外，上述第一可调单元4、第二可调单元9、匹配电路7仅仅为本发明实施例中所列举的一种实现方式，对于其他能够实现第一可调单元4、第二可调单元9、匹配电路7的电感、电容连接方式，也是本发明实施例所要保护的范围。
本发明实施例提供了一种缝隙天线，该缝隙天线包括系统电路板、接地导体、辐射体和第一可调单元，系统电路板与接地导体连接形成电导体，辐射体与电导体相对形成缝隙；系统电路板上设置有馈电端，馈电端与辐射体电连接，第一可调单元的一端与系统电路板连接，第一可调单元的另一端与辐射体连接，第一可调单元用于调节缝隙天线的谐振频率。本发明实施例提供的缝隙天线，通过第一可调单元对缝隙天线的谐振频率进行调节，使得该缝隙天线可以产生不同的缝隙式谐振频率，以覆盖所需的频段。
实施例三
本发明实施例提供了一种移动终端，如图20所示，该移动终端包括射频处理单元、基带处理单元、以及实施例一或实施例二中任 一所述的缝隙天线，具体可参考实施例一和实施例二所述的缝隙天线，在此不再赘述。
其中，射频处理单元10与系统电路板1的馈电端6电性连接，缝隙天线用于将接收到的无线信号传输给射频处理单元10，或者将射频处理单元10的发射信号转换为电磁波发送出去；射频处理单元10用于对缝隙天线接收到的无线信号进行选频、放大、下变频处理，并将其转换成中频信号或基带信号发送给基带处理单元20，或者，用于将基带处理单元20发送的基带信号或中频信号经过上变频、放大，通过缝隙天线发送出去；基带处理单元20，对接收到的中频信号或基带信号进行处理。
上述移动终端可以为在移动中使用的通讯设备，可以为手机，也可以为平板电脑，数据卡等，当然不限于此。
本发明实施例提供了一种移动终端，该移动终端中包含射频处理单元、基带处理单元和缝隙天线，该缝隙天线包括系统电路板、接地导体、辐射体和第一可调单元，系统电路板与接地导体连接形成电导体，辐射体与电导体相对形成缝隙；系统电路板上设置有馈电端，馈电端与辐射体电连接，第一可调单元的一端与系统电路板连接，第一可调单元的另一端与辐射体连接，第一可调单元用于调节缝隙天线的谐振频率。本发明实施例提供的缝隙天线，通过第一可调单元对缝隙天线的谐振频率进行调节，使得该缝隙天线可以产生不同的缝隙式谐振频率，以覆盖所需的频段。
最后应说明的是：以上实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。

Claims (12)

  1. 一种缝隙天线，其特征在于，包括：系统电路板、接地导体、辐射体和第一可调单元；
    所述系统电路板与所述接地导体连接形成电导体，所述辐射体与所述电导体相对形成缝隙；所述系统电路板上设置有馈电端，所述馈电端与所述辐射体电连接，所述第一可调单元的一端与所述系统电路板连接，所述第一可调单元的另一端与所述辐射体连接，所述第一可调单元用于调节缝隙天线的谐振频率。
  2. 根据权利要求1所述的缝隙天线，其特征在于，所述缝隙天线还包括：匹配电路；所述匹配电路的一端与所述系统电路板的馈电端连接，所述匹配电路的另一端与所述辐射体连接。
  3. 根据权利要求1或2所述的缝隙天线，其特征在于，所述缝隙天线还包括：接地单元；所述系统电路板与所述接地导体通过所述接地单元电连接形成电导体。
  4. 根据权利要求1-3任一项所述的缝隙天线，其特征在于，所述第一可调单元包括开关装置和至少两个电抗元件，所述至少两个电抗元件并联形成并联电路，所述开关装置的第一端与所述系统电路板连接，所述开关装置的控制端用于接收切换信号，所述开关装置的第二端用于根据所述切换信号与所述并联电路中的一个电抗元件连接，所述并联电路的另一端与所述辐射体连接。
  5. 根据权利要求4所述的缝隙天线，其特征在于，所述第一可调单元还包括可变电容器，所述可变电容器的一端与所述系统电路板连接，所述可变电容器的另一端与所述开关装置的第一端连接。
  6. 根据权利要求1-5任一项所述的缝隙天线，其特征在于，所述缝隙天线还包括：第二可调单元；
    所述第二可调单元的一端与所述系统电路板电连接，所述第二可调单元的另一端与所述辐射体电连接，所述第二可调单元设置在以所述馈电端为界、与所述第一可调单元相对的一侧。
  7. 根据权利要求6所述的缝隙天线，其特征在于，所述第二可调单元包括开关装置和至少两个电抗元件，所述至少两个电抗元件并 联形成并联电路，所述开关装置的一端与所述系统电路板连接，所述开关装置的控制端用于接收切换信号，所述开关装置的第二端用于根据所述切换信号与所述并联电路中的一个电抗元件连接，所述并联电路的另一端与所述辐射体连接。
  8. 根据权利要求7所述的缝隙天线，其特征在于，所述第二可调单元还包括可变电容器，所述可变电容器的一端与所述系统电路板连接，所述可变电容器的另一端与所述开关装置的第一端连接。
  9. 根据权利要求1所述的缝隙天线，其特征在于，所述辐射体与所述电导体相对形成的缝隙呈平直状。
  10. 根据权利要求1所述的缝隙天线，其特征在于，所述辐射体与所述电导体相对形成的缝隙呈弯折状。
  11. 根据权利要求4或7所述的缝隙天线，其特征在于，所述电抗元件为电感性电抗元件或电容性电抗元件。
  12. 一种移动终端，其特征在于，包括射频处理单元、基带处理单元和权利要求1-11中任一项所述的缝隙天线；
    所述射频处理单元与所述系统电路板上的馈电端电性连接；
    所述缝隙天线用于将接收到的无线信号传输给所述射频处理单元，或者将射频处理单元的发射信号转换为电磁波发送出去；所述射频处理单元用于对所述缝隙天线接收到的无线信号进行选频、放大、下变频处理，并将其转换成中频信号或基带信号发送给所述基带处理单元，或者，用于将所述基带处理单元发送的基带信号或中频信号经过上变频、放大，通过所述缝隙天线发送出去；所述基带处理单元，对接收到的所述中频信号或所述基带信号进行处理。
PCT/CN2015/076786 2015-04-16 2015-04-16 一种缝隙天线和移动终端 WO2016165113A1 (zh)

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