CN110994178B - Antenna structure and electronic equipment - Google Patents
Antenna structure and electronic equipment Download PDFInfo
- Publication number
- CN110994178B CN110994178B CN201911421832.XA CN201911421832A CN110994178B CN 110994178 B CN110994178 B CN 110994178B CN 201911421832 A CN201911421832 A CN 201911421832A CN 110994178 B CN110994178 B CN 110994178B
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- Prior art keywords
- frequency band
- series circuit
- antenna structure
- feeding point
- antenna
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/10—Resonant antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
- H01Q5/335—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors at the feed, e.g. for impedance matching
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- Support Of Aerials (AREA)
Abstract
The invention provides an antenna structure and an electronic device. The antenna structure includes: a signal source; the antenna radiator is provided with a first feeding point, a second feeding point and a grounding point; the first feeding point is electrically connected with the signal source through a feeder line, the second feeding point is electrically connected with the signal source through an LC series circuit, and the grounding point is grounded; when the LC series circuit transmits signals of a first frequency band, the LC series circuit is equivalently short-circuited; when the LC series circuit transmits a signal of a second frequency band, the impedance value of the LC series circuit is a preset impedance value, and the first frequency band is a position service frequency band and is higher than the second frequency band. The antenna structure is equivalently short-circuited in the first frequency band by adding one branch of the LC series circuit at the feed position, and double resonance of the first frequency band and the second frequency band is realized under the condition of basically not influencing the second frequency band.
Description
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to an antenna structure and electronic equipment.
Background
At present, the metal texture of the mobile terminal becomes mainstream, the display screen occupation ratio is gradually increased, and the design space of the antenna resonance arm is smaller in the future. Especially for a metal-shaped mobile terminal, the shape of the antenna resonating arm is extremely simple, and the antenna radiating arm can be changed in many ways unlike a Flexible Printed Circuit (FPC) antenna or a Laser-Direct-structuring (LDS) antenna. Therefore, an antenna form in which a main antenna and other antennas such as a Global Positioning System (GPS) antenna share a radiation unit has appeared, and for a conventional scheme, a loading unit is mostly added to an antenna body to form dual resonance or multi-resonance.
As shown in fig. 1, the dual resonance of the main antenna low frequency and the GPS frequency band can be realized by loading a capacitor on an antenna radiator, and the antenna includes: a radiator 101 and a loading capacitor 102. However, the low-frequency performance is affected by a mode of matching double resonance by loading the capacitor, so that loss is introduced, and the low-frequency efficiency is reduced.
Disclosure of Invention
The embodiment of the invention provides an antenna structure and electronic equipment, and aims to solve the problems that when the antenna structure in the prior art realizes double resonance of low frequency and a position service frequency band, the performance of the low frequency is influenced, loss is introduced, and the efficiency of the low frequency is reduced.
In order to solve the technical problem, the invention is realized as follows:
in a first aspect, an embodiment of the present invention provides an antenna structure, including:
a signal source;
the antenna radiator is provided with a first feeding point, a second feeding point and a grounding point;
the first feeding point is electrically connected with the signal source through a feeder line, the second feeding point is electrically connected with the signal source through an LC series circuit, and the grounding point is grounded;
when the LC series circuit transmits signals of a first frequency band, the LC series circuit is equivalently short-circuited; when the LC series circuit transmits a signal of a second frequency band, the impedance value of the LC series circuit is a preset impedance value, and the first frequency band is a position service frequency band and is higher than the second frequency band.
In a second aspect, embodiments of the present invention further provide an electronic device including the antenna structure according to the above embodiments.
In the above scheme of the embodiment of the present invention, the first feeding point on the antenna radiator is electrically connected to the signal source through the feeder line, the second feeding point on the antenna radiator is electrically connected to the signal source through the LC series circuit, and the ground point of the antenna radiator is grounded; when the LC series circuit transmits signals of a first frequency band, the LC series circuit is equivalent to a short circuit; when the LC series circuit transmits signals of the second frequency band, the impedance value of the LC series circuit is a preset impedance value, the first frequency band is a position service frequency band and is higher than the second frequency band, therefore, the branch of the LC series circuit is added at the feed position, so that the antenna structure is equivalent to a short circuit at the first frequency band, and double resonance of the first frequency band and the second frequency band is realized under the condition that the second frequency band is not influenced basically.
Drawings
Fig. 1 is a schematic structural diagram of an antenna structure in the prior art;
fig. 2 is a schematic structural diagram of an antenna structure according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an antenna structure according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 2 to fig. 3 are schematic structural diagrams of the antenna structure according to the embodiment of the present invention. The antenna structure includes: a signal source 1; the antenna comprises an antenna radiator 2, wherein the antenna radiator 2 is provided with a first feeding point 3, a second feeding point 4 and a grounding point 5; the first feeding point 3 is electrically connected with the signal source 1 through a feeder 6, the second feeding point 4 is electrically connected with the signal source 1 through an LC series circuit, and the grounding point 5 is grounded; when the LC series circuit transmits signals of a first frequency band, the LC series circuit is equivalent to a short circuit; when the LC series circuit transmits the signal of the second frequency band, the impedance value of the LC series circuit is a preset impedance value, and the first frequency band is a position service frequency band and is higher than the second frequency band.
It should be noted that the signal source 1 (or called feed source) can be used for transmitting and receiving signals and providing electromagnetic wave energy.
Further, the signal source 1 is configured to receive and transmit the signal in the first frequency band and the signal in the second frequency band, that is, the signal source 1 feeds the signal in the first frequency band and the signal in the second frequency band, that is, the signal in the first frequency band and the signal in the second frequency band share the feed. The signal source 1 is connected to the antenna radiator 2 by two branches, one of which is connected to the antenna radiator 2 by a feed line 6 and the other of which is connected to the antenna radiator 2 by an LC series circuit. Here, when the LC series circuit transmits a signal of the first frequency band, it is equivalent to a short circuit; when the LC series circuit transmits the signal of the second frequency band, the impedance value is the preset impedance value, so that double resonance can be formed, the second frequency band, namely the low frequency, is basically not influenced, the loss of the low frequency is reduced, and the efficiency of the low frequency is improved.
Here, the embodiment of the present invention is not limited to the grounding manner, and in practical applications, the grounding manner may include, but is not limited to, grounding by connecting a metal housing, a motherboard ground, or a reference ground.
In an optional implementation manner, the first frequency band is a location service frequency band, and the second frequency band is a low frequency band. That is, with the above antenna structure, when the LC series circuit transmits a signal of the location service frequency band, it is equivalent to a short circuit; when the LC series circuit transmits the signal of the low frequency band, the impedance value is the preset impedance value.
Optionally, the location service frequency band is a GPS frequency band.
Optionally, the first frequency band is in a range of 1573.397MHz to 1576.423 MHz.
Optionally, the LC series circuit comprises: an inductor and a capacitor 7; the first end of the inductor is electrically connected with the signal source 1, the second end of the inductor is electrically connected with the first end of the capacitor 7, and the second end of the capacitor 7 is electrically connected with the second feeding point 4.
Preferably, the inductor is a microstrip line equivalent inductor 8 (as shown in fig. 2) or a lumped parameter inductor 9 (as shown in fig. 3).
When the LC series circuit includes an inductor and a capacitor connected in series, the impedance value of the LC series circuit is the capacitance value of the capacitor 7 when the LC series circuit transmits a signal of the second frequency band based on the above-described antenna configuration. That is, the LC series circuit is equivalent to a capacitance; when the LC series circuit transmits signals of the first frequency band, the LC series circuit is equivalent to a short circuit, so that the effects of one-feed two-branch double resonance and no mutual influence are achieved.
Optionally, the LC series circuit is conducted with the second feeding point 4 through a spring, a conductive foam or a screw. Of course, other connection methods capable of conducting the LC series circuit to the second feeding point 4 may be adopted, and are not limited in particular here.
Optionally, the antenna radiator 2 is a metal body, an FPC antenna, or an LDS antenna.
In the antenna structure of the embodiment of the invention, the first feed point on the antenna radiator is electrically connected with the signal source through the feeder line, the second feed point on the antenna radiator is electrically connected with the signal source through the LC series circuit, and the grounding point of the antenna radiator is grounded; when the LC series circuit transmits signals of a first frequency band, the LC series circuit is equivalent to a short circuit; when the LC series circuit transmits signals of the second frequency band, the impedance value of the LC series circuit is a preset impedance value, the first frequency band is a position service frequency band and is higher than the second frequency band, therefore, the antenna structure is equivalently short-circuited in the first frequency band by adding a branch of the LC series circuit at the feed position, and double resonance of the first frequency band and the second frequency band is realized under the condition that the second frequency band is not influenced basically.
The embodiment of the invention also provides electronic equipment which comprises the antenna structure in the embodiment.
It should be noted that, in this document, the terms "first", "second", and the like are used for distinguishing similar objects, and are not necessarily used for describing a particular order or sequence. Furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. An antenna structure, comprising:
a signal source;
the antenna radiator is provided with a first feeding point, a second feeding point and a grounding point; the antenna radiator between the first feeding point and the second feeding point is continuous;
the first feeding point is electrically connected with the signal source through a feeder line, the second feeding point is electrically connected with the signal source through an LC series circuit, and the grounding point is grounded; the first feeding point is located between the grounding point and the second feeding point;
when the LC series circuit transmits signals of a first frequency band, the LC series circuit is equivalently short-circuited; when the LC series circuit transmits a signal of a second frequency band, the impedance value of the LC series circuit is a preset impedance value, and the first frequency band is a position service frequency band and is higher than the second frequency band.
2. The antenna structure of claim 1, wherein the LC series circuit comprises: an inductor and a capacitor;
the first end of the inductor is electrically connected with the signal source, the second end of the inductor is electrically connected with the first end of the capacitor, and the second end of the capacitor is electrically connected with the second feeding point.
3. The antenna structure according to claim 2, characterized in that the predetermined impedance value is a capacitance value of the capacitor.
4. The antenna structure according to claim 2, characterized in that the inductance is a microstrip line equivalent inductance or a lumped parameter inductance.
5. The antenna structure of claim 1, wherein the LC series circuit is connected to the second feed point by a spring, a conductive foam, or a screw.
6. The antenna structure according to claim 1, characterized in that the antenna radiator is a metal body, a flexible circuit board, FPC, antenna or a laser direct structuring, LDS, antenna.
7. The antenna structure according to claim 1, characterized in that the first frequency band ranges from 1573.397MHz to 1576.423 MHz.
8. The antenna structure of claim 1, wherein the signal source is configured to transceive signals in the first frequency band and signals in the second frequency band.
9. An electronic device, comprising: an antenna structure as claimed in any one of claims 1 to 8.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911421832.XA CN110994178B (en) | 2019-12-31 | 2019-12-31 | Antenna structure and electronic equipment |
| PCT/CN2020/140617 WO2021136232A1 (en) | 2019-12-31 | 2020-12-29 | Antenna structure and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911421832.XA CN110994178B (en) | 2019-12-31 | 2019-12-31 | Antenna structure and electronic equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110994178A CN110994178A (en) | 2020-04-10 |
| CN110994178B true CN110994178B (en) | 2022-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911421832.XA Active CN110994178B (en) | 2019-12-31 | 2019-12-31 | Antenna structure and electronic equipment |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110994178B (en) |
| WO (1) | WO2021136232A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110994178B (en) * | 2019-12-31 | 2022-01-28 | 维沃移动通信有限公司 | Antenna structure and electronic equipment |
| CN112310637A (en) * | 2020-09-03 | 2021-02-02 | 瑞声新能源发展(常州)有限公司科教城分公司 | Antenna assembly and mobile terminal |
| CN112397902B (en) * | 2020-10-23 | 2023-06-20 | Oppo广东移动通信有限公司 | Antenna, impedance matching method thereof and terminal |
| CN113437514B (en) * | 2021-06-25 | 2022-11-22 | 歌尔科技有限公司 | Antenna device and portable electronic device |
| CN113922052A (en) * | 2021-09-22 | 2022-01-11 | 联想(北京)有限公司 | Electronic equipment |
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| CN102474001A (en) * | 2009-08-17 | 2012-05-23 | 安蒂诺瓦有限公司 | Antennas with multiple feed circuits |
| CN203326091U (en) * | 2013-05-27 | 2013-12-04 | 步步高通信科技有限公司 | Mobile terminal with high and low frequencies isolated |
| JP2014110625A (en) * | 2012-12-04 | 2014-06-12 | Fujikura Ltd | Inverse f antenna |
| CN105742818A (en) * | 2016-03-25 | 2016-07-06 | 联想(北京)有限公司 | Antenna and control method |
| CN206524401U (en) * | 2017-01-19 | 2017-09-26 | 瑞声科技(新加坡)有限公司 | Antenna assembly and the mobile terminal with the antenna assembly |
| CN108493579A (en) * | 2018-03-19 | 2018-09-04 | 广东欧珀移动通信有限公司 | Antenna assembly and electronic equipment |
| CN109599662A (en) * | 2018-11-27 | 2019-04-09 | 维沃移动通信有限公司 | A kind of antenna system and terminal device |
| CN209709162U (en) * | 2019-07-05 | 2019-11-29 | 维沃移动通信有限公司 | A kind of antenna and mobile terminal |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4284252B2 (en) * | 2004-08-26 | 2009-06-24 | 京セラ株式会社 | Surface mount antenna, antenna device using the same, and radio communication device |
| TWI539678B (en) * | 2014-05-16 | 2016-06-21 | 宏碁股份有限公司 | Communication device |
| CN106033841A (en) * | 2015-03-19 | 2016-10-19 | 联想(北京)有限公司 | Antenna device, electronic equipment and control method for antenna device |
| CN208337631U (en) * | 2018-05-29 | 2019-01-04 | 华硕电脑股份有限公司 | Wireless communication device |
| CN109546310B (en) * | 2018-12-12 | 2021-01-08 | 维沃移动通信有限公司 | Antenna structure and communication terminal |
| CN110137683A (en) * | 2019-05-24 | 2019-08-16 | 联想(北京)有限公司 | A kind of antenna, electronic equipment and control method |
| CN110994178B (en) * | 2019-12-31 | 2022-01-28 | 维沃移动通信有限公司 | Antenna structure and electronic equipment |
-
2019
- 2019-12-31 CN CN201911421832.XA patent/CN110994178B/en active Active
-
2020
- 2020-12-29 WO PCT/CN2020/140617 patent/WO2021136232A1/en active Application Filing
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102474001A (en) * | 2009-08-17 | 2012-05-23 | 安蒂诺瓦有限公司 | Antennas with multiple feed circuits |
| JP2014110625A (en) * | 2012-12-04 | 2014-06-12 | Fujikura Ltd | Inverse f antenna |
| CN203326091U (en) * | 2013-05-27 | 2013-12-04 | 步步高通信科技有限公司 | Mobile terminal with high and low frequencies isolated |
| CN105742818A (en) * | 2016-03-25 | 2016-07-06 | 联想(北京)有限公司 | Antenna and control method |
| CN206524401U (en) * | 2017-01-19 | 2017-09-26 | 瑞声科技(新加坡)有限公司 | Antenna assembly and the mobile terminal with the antenna assembly |
| CN108493579A (en) * | 2018-03-19 | 2018-09-04 | 广东欧珀移动通信有限公司 | Antenna assembly and electronic equipment |
| CN109599662A (en) * | 2018-11-27 | 2019-04-09 | 维沃移动通信有限公司 | A kind of antenna system and terminal device |
| CN209709162U (en) * | 2019-07-05 | 2019-11-29 | 维沃移动通信有限公司 | A kind of antenna and mobile terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021136232A1 (en) | 2021-07-08 |
| CN110994178A (en) | 2020-04-10 |
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