CN201994417U - Multi-frequency antenna - Google Patents
Multi-frequency antenna Download PDFInfo
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- CN201994417U CN201994417U CN2011200023433U CN201120002343U CN201994417U CN 201994417 U CN201994417 U CN 201994417U CN 2011200023433 U CN2011200023433 U CN 2011200023433U CN 201120002343 U CN201120002343 U CN 201120002343U CN 201994417 U CN201994417 U CN 201994417U
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- antenna
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Abstract
The utility model discloses a multi-frequency antenna, which comprises a bent antenna element, a feeder and a matching element. The bent antenna element is bent and is used for transmitting or receiving a plurality of electromagnetic frequency range signals, the feeder is used for transmitting microwave signals received or transmitted by the bent antenna element, and the matching element is used for matching electrical characteristics of the bent antenna element and the feeder. The multi-frequency antenna has wide work frequency range, and accordingly, multiple frequency ranges and high efficiency of the antenna are realized. In addition, by the aid of a PCB (printed circuit board), the height of the antenna is reduced, the section of the antenna is reduced, the antenna manufactured on the PCB is easy to be integrated and processed, and production efficiency is increased effectively.
Description
Technical field
The utility model relates to a kind of multifrequency antenna, particularly relates to a kind of multifrequency antenna of portable terminal.
Background technology
Antenna is an important devices in the communication system, and it can radiation and received RF signal.Present communication antenna of the prior art faces two challenges greatly: the ultra broadband of antenna and low section.Because in the prior art, the radio system of increasing different frequency range is integrated in same communication equipment or the device, so designing a kind of antenna, communication industry exigence can cross the multiple working frequency range of covering, and the working frequency range that covers is The more the better, thus ultra broadband how to realize antenna be communicate by letter at present industry subject matter it.In addition since existing communication equipment become more and more frivolous, so antenna volume especially the height of antenna be the smaller the better.Thereby when satisfying the bandwidth of antenna broad, also need to satisfy the lower section of antenna.
Antenna form in the mobile communication of prior art adopts PIFA usually, fall L, the form such as F of falling, these antenna needs certain thickness usually, and (as a rule the thickness of antenna is 6～8mm), so can't well realize the purpose of low section, the efficient of Chang Yong communication antenna in its working frequency range is lower in addition, generally about 30%, thereby TRS in the communication system (Total RadiatedSensitivity global radiation sensitivity) and TIS performances such as (Total Isotropic Sensitivity have isotropic sensitivity) have been influenced.
The utility model content
The technical problems to be solved in the utility model be for the antenna working band that overcomes prior art narrow, the section height, the defective that efficient is not high provides a kind of multifrequency antenna, has wide working band, the characteristics that efficient is high.
The utility model solves above-mentioned technical problem by following technical proposals:
The utility model provides a kind of multifrequency antenna, is characterized in that described multifrequency antenna comprises:
One meandered antenna element, described meandered antenna element are the bending form and are used for emission or receive some electromagnetic band signals;
One feeder line is used to transmit the described electromagnetic band signal that described meandered antenna element receives or sends;
One matching element, the electrical characteristic that is used to mate meandered antenna element and feeder line.
Preferably, described meandered antenna element, feeder line and matching element are arranged on the pcb board.
Preferably, described meandered antenna element, feeder line and matching element are printed on pcb board.
Preferably, described feeder line is the CPW microstrip line on a band ground.
Preferably, the described electromagnetic band signal signal that is GSM900/DCS1800, GSM850/PCS1900 or GSM900/DCS1800/GSM850/PCS1900 frequency range.
Preferably, described matching element comprises a resistance, and described resistance connects described meandered antenna element and described feeder line.
Preferably, described matching element comprises one first electric capacity, one second electric capacity and an inductance, described inductance connects described meandered antenna element and described feeder line, and described inductance also is connected with ground by described first electric capacity, and described inductance also is connected with ground by described second electric capacity.
Preferably, described meandered antenna element comprises a vertical minor face, one first vertically long limit, one second vertically long limit, one first transverse sides, one second transverse sides and one the 3rd transverse sides, wherein said first transverse sides is electrically connected with vertical minor face, described vertical minor face is electrically connected with the first vertically long limit by second transverse sides, and the described first vertically long limit is electrically connected with the second vertically long limit by the 3rd transverse sides.
Preferably, the length of described first transverse sides is 12 millimeters, width is 2 millimeters, the length of described second transverse sides and the 3rd transverse sides is 6 millimeters, width is 2 millimeters, and the length of described vertical minor face is 19 millimeters, and width is 2 millimeters, the length on the described first vertically long limit and the second vertically long limit is 36 millimeters, and width is 2 millimeters.
Positive progressive effect of the present utility model is:
Multifrequency antenna of the present utility model has wide working band, thereby the multiband and the high efficiency of antenna have been realized, in addition by being arranged at pcb board (printed circuit board (PCB)), reduced the height of antenna, thereby reduced the section of antenna, in addition, the antenna of making on the pcb board is integrated easily, be easy to processing, effectively raises production efficiency.
Description of drawings
Fig. 1 is the structured flowchart of the preferred embodiment of multifrequency antenna of the present utility model.
Fig. 2 is the circuit structure diagram of first embodiment of the matching element of multifrequency antenna of the present utility model.
Fig. 3 is the circuit structure diagram of second embodiment of the matching element of multifrequency antenna of the present utility model.
Fig. 4 is the structure chart of the preferred embodiment of multifrequency antenna of the present utility model.
Fig. 5 is the structure chart of the preferred embodiment of multifrequency antenna of the present utility model on the pcb board of portable terminal.
Fig. 6 is the return loss simulation result figure of the preferred embodiment of multifrequency antenna of the present utility model.
Fig. 7 is the standing-wave ratio simulation result figure of the preferred embodiment of the big line of multi-frequency of the present utility model.
Embodiment
Provide the utility model preferred embodiment below in conjunction with accompanying drawing, to describe the technical solution of the utility model in detail.
Figure 1 shows that the structured flowchart of multifrequency antenna of the present utility model, comprising a meandered antenna element 1, a feeder line 2 and a matching element 3.Wherein said meandered antenna element 1 is the bending form and is used for emission or receives some electromagnetic band signals; Described feeder line 2 is used to transmit the described electromagnetic band signal that described meandered antenna element 1 receives or sends; Described matching element 3 is used to mate the electrical characteristic of meandered antenna element 1 and feeder line 2, for example impedance operator or transmission characteristic etc.
The circuit structure diagram of described in addition matching element 3 comprises a resistance 31 among first embodiment of matching element 3 wherein shown in Figure 2 shown in Fig. 2 or 3, described resistance 31 connects meandered antenna element 1 and feeder line 2 respectively.The electrical characteristic of mating described meandered antenna element 1 and feeder line 2 by the resistance of regulating resistance 31 in the present embodiment.Described first embodiment is applicable to the little situation of general environment influence.
Comprise one first electric capacity 32, one second electric capacity 33 and an inductance 34 among second embodiment of matching element 3 shown in Figure 3 in addition, wherein said inductance 34 connects described meandered antenna element 1 and described feeder line 2, described inductance 34 also is connected with ground by one first electric capacity 32, and described inductance 34 also is connected with ground by one second electric capacity 33.The electrical characteristic that the capacitor value by regulating first electric capacity 32 and second electric capacity 33 in the present embodiment and the induction reactance value of inductance 34 are mated described meandered antenna element 1 and feeder line 2.Described second embodiment is applicable under the bigger situation of environmental impact
The operation principle of multifrequency antenna shown in Figure 1 is as follows:
The electromagnetic signal of some frequency ranges is launched or received to described meandered antenna element 1, Chang Yong GSM radiofrequency signal for example, and between described antenna and described feeder line, reserve a matching network, it is matching element 3, described matching element 3 is used for the electrical characteristic coupling with the electrical characteristic of the electromagnetic signal of described some frequency ranges and feeder line 2, after this feeder line 2 is connected with external device (ED) or element, radio frequency chip etc. for example, thus transmit described radiofrequency signal.
Figure 4 shows that the structure chart of multifrequency antenna of the present utility model, wherein said multifrequency antenna comprises one first transverse sides 11, one second transverse sides 12, one the 3rd transverse sides 13, one vertical minor face 14, one first vertically long limit 15, one second vertically long limit 16, CPW (co-planar waveguide) microstrip line 21 on one band ground, one matching element 3 and a pcb board 4, wherein said first transverse sides 11 is electrically connected with vertical minor face 14, described vertical minor face 14 is electrically connected with the first vertically long limit 15 by second transverse sides 12, and the described first vertically long limit 15 is electrically connected with the second vertically long limit 16 by the 3rd transverse sides 13; Described first transverse sides 11 is electrically connected by the CPW microstrip line 21 of matching element 3 with described band ground.
Described in addition first transverse sides 11, second transverse sides 12, the 3rd transverse sides 13, vertically the CPW microstrip line 21 and the matching element 3 on 15, the second vertically long limit 16, minor face 14, the first vertically long limit, band ground all are arranged on the pcb board 4.Described in the present embodiment pcb board 4 is the pcb board that is made of FR4 (epoxy glass cloth laminated board) material, and those skilled in the art can be according to the actual needs realizes identical purposes with the pcb board that the material that requires to adopt other constitutes.
The first above-mentioned transverse sides 11, second transverse sides 12, the 3rd transverse sides 13, vertical minor face 14, first vertically long limit 15 and the second vertically long limit 16 have constituted meandered antenna element 1 among Fig. 1; The CPW microstrip line 21 on band ground has constituted the feeder line 2 among Fig. 1.
The operation principle of multifrequency antenna shown in Figure 4 is identical with the operation principle of multifrequency antenna shown in Figure 1, is not just giving unnecessary details here.
Figure 5 shows that the structure chart of multifrequency antenna of the present utility model on the pcb board of portable terminal, this structure is identical with structure shown in Figure 4, promptly comprise one first transverse sides 11, one second transverse sides 12, one the 3rd transverse sides 13, one vertical minor face 14, one first vertically long limit 15, one second vertically long limit 16, the CPW microstrip line 21 and a matching element 3 on one band ground, wherein said first transverse sides 11 is electrically connected with vertical minor face 14, described vertical minor face 14 is electrically connected with the first vertically long limit 15 by second transverse sides 12, and the described first vertically long limit 15 is electrically connected with the second vertically long limit 16 by the 3rd transverse sides 13; Described first transverse sides 11 is electrically connected by the CPW microstrip line 21 of matching element 3 with described band ground.
The first above-mentioned transverse sides 11, second transverse sides 12, the 3rd transverse sides 13, vertical minor face 14, first vertically long limit 15 and the second vertically long limit 16 have constituted meandered antenna element 1; The CPW microstrip line 21 on band ground has constituted feeder line 2.
In addition on the same pcb board 4 that first transverse sides 11 described in the present embodiment, second transverse sides 12, the 3rd transverse sides 13,15, the second vertically long limit 16, vertical minor face 14, first vertically long limit, the CPW microstrip line 21 of being with ground and matching element 3 all are arranged at portable terminal.
First transverse sides, 11 length L described in the present embodiment wherein
11Be 12 millimeters, width W
11It is 2 millimeters; The length L of described second transverse sides 12 and the 3rd transverse sides 13
12And L
13Be 6 millimeters, width W
12And W
13It is 2 millimeters; The length L of described vertical minor face 14
14Be 19 millimeters, width W
14It is 2 millimeters; The length L on the described first vertically long limit 15 and the second vertically long limit 16
15And L
16Be 36 millimeters, width W
15And W
16It is 2 millimeters.The length of the CPW microstrip line 2 on described in addition band ground can be adjusted as required flexibly.
According to the size of above-mentioned meandered antenna element 1 and feeder line 2, the electromagnetic band of the work of the multifrequency antenna in the present embodiment is GSM900/DCS1800 or GSM850/PCS1900.Those skilled in the art can change the size of meandered antenna element 1 and feeder line 2 according to the needs and the requirement of actual portable terminal, thereby changes the electromagnetic band of the work of antenna.
In addition according to the size of above-mentioned meandered antenna element 1 and feeder line 2, the return loss S11 simulation result figure that multifrequency antenna in the present embodiment obtains by emulation as shown in Figure 6, the standing-wave ratio VSWR simulation result figure that described multifrequency antenna emulation obtains as shown in Figure 7, the average gain that described in addition multifrequency antenna is tested under GSM900 and DCS1800 electromagnetic band is as shown in table 1 below.Those skilled in the art can change the size of meandered antenna element 1 and feeder line 2 according to the needs and the requirement of actual portable terminal, thereby changes return loss S11, standing-wave ratio VSWR and the antenna efficiency and the average gain of antenna.
Table 1
And the active test result that combines of the SIM900B module of antenna in the present embodiment and Shanghai Simcom company, promptly the test result of TRS and TIS parameter is as shown in table 2 below in the channel of GSM900 and DCS1800 frequency range.
Table 2
By Fig. 6, Fig. 7 and table 1 and the effective working frequency range of the visible multifrequency antenna of the present utility model of table 2 is GSM900 and DCS1800 frequency range, and the average efficiency of the antenna efficiency in electromagnetic band GSM900 and DCS1800 is higher.
Thereby passive, the active result of the antenna in the present embodiment is fine, can apply to communications band GSM900/DCS 1800 preferably.Slightly modified also can be used for the GSM850/PCS1900 frequency range, even four frequency ranges of GSM900/DCS1800/GSM850/PCS1900.
Though more than described embodiment of the present utility model, it will be understood by those of skill in the art that these only illustrate, protection range of the present utility model is limited by appended claims.Those skilled in the art can make numerous variations or modification to these execution modes under the prerequisite that does not deviate from principle of the present utility model and essence, but these changes and modification all fall into protection range of the present utility model.
Claims (9)
1. a multifrequency antenna is characterized in that, described multifrequency antenna comprises:
One meandered antenna element, described meandered antenna element are the bending form and are used for emission or receive some electromagnetic band signals;
One feeder line is used to transmit the described electromagnetic band signal that described meandered antenna element receives or sends;
One matching element, the electrical characteristic that is used to mate meandered antenna element and feeder line.
2. multifrequency antenna as claimed in claim 1 is characterized in that, described meandered antenna element, feeder line and matching element are arranged on the pcb board.
3. multifrequency antenna as claimed in claim 2 is characterized in that, described meandered antenna element, feeder line and matching element are printed on pcb board.
4. multifrequency antenna as claimed in claim 1 is characterized in that, described feeder line is the CPW microstrip line on a band ground.
5. multifrequency antenna as claimed in claim 1 is characterized in that, described electromagnetic band signal is the signal of GSM900/DCS1800/GSM850/PCS1900, GSM850/PCS1900 or GSM900/DCS1800 frequency range.
6. multifrequency antenna as claimed in claim 1 is characterized in that described matching element comprises a resistance, and described resistance connects described meandered antenna element and described feeder line.
7. multifrequency antenna as claimed in claim 1, it is characterized in that, described matching element comprises one first electric capacity, one second electric capacity and an inductance, described inductance connects described meandered antenna element and described feeder line, described inductance also is connected with ground by described first electric capacity, and described inductance also is connected with ground by described second electric capacity.
8. multifrequency antenna as claimed in claim 1, it is characterized in that, described meandered antenna element comprises a vertical minor face, one first vertically long limit, one second vertically long limit, one first transverse sides, one second transverse sides and one the 3rd transverse sides, wherein said first transverse sides is electrically connected with vertical minor face, described vertical minor face is electrically connected with the first vertically long limit by second transverse sides, and the described first vertically long limit is electrically connected with the second vertically long limit by the 3rd transverse sides.
9. multifrequency antenna as claimed in claim 8, it is characterized in that, the length of described first transverse sides is 12 millimeters, width is 2 millimeters, and the length of described second transverse sides and the 3rd transverse sides is 6 millimeters, and width is 2 millimeters, the length of described vertical minor face is 19 millimeters, width is 2 millimeters, and the length on the described first vertically long limit and the second vertically long limit is 36 millimeters, and width is 2 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200023433U CN201994417U (en) | 2011-01-06 | 2011-01-06 | Multi-frequency antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200023433U CN201994417U (en) | 2011-01-06 | 2011-01-06 | Multi-frequency antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201994417U true CN201994417U (en) | 2011-09-28 |
Family
ID=44670895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200023433U Expired - Fee Related CN201994417U (en) | 2011-01-06 | 2011-01-06 | Multi-frequency antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201994417U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102780083A (en) * | 2012-07-26 | 2012-11-14 | 中国航天科工集团第三研究院第八三五七研究所 | Broadband communication antenna |
| CN106450699A (en) * | 2016-11-01 | 2017-02-22 | 上海冷王智能科技有限公司 | 433MHz PCB antenna |
| CN106887683A (en) * | 2017-02-28 | 2017-06-23 | 杭州古北电子科技有限公司 | PCB printed board RF antenna systems based on single live wire radio frequency panel-switch |
| CN108199134A (en) * | 2018-01-11 | 2018-06-22 | 淮阴师范学院 | A kind of multi-frequency antenna device |
| CN108258394A (en) * | 2018-01-11 | 2018-07-06 | 淮阴师范学院 | A kind of production method of multi-frequency antenna device |
| CN112271446A (en) * | 2020-08-20 | 2021-01-26 | 珠海格力电器股份有限公司 | Concentric semicircular microstrip antenna and wireless sensor antenna based on smart home |
-
2011
- 2011-01-06 CN CN2011200023433U patent/CN201994417U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102780083A (en) * | 2012-07-26 | 2012-11-14 | 中国航天科工集团第三研究院第八三五七研究所 | Broadband communication antenna |
| CN102780083B (en) * | 2012-07-26 | 2014-07-23 | 中国航天科工集团第三研究院第八三五七研究所 | Broadband communication antenna |
| CN106450699A (en) * | 2016-11-01 | 2017-02-22 | 上海冷王智能科技有限公司 | 433MHz PCB antenna |
| CN106887683A (en) * | 2017-02-28 | 2017-06-23 | 杭州古北电子科技有限公司 | PCB printed board RF antenna systems based on single live wire radio frequency panel-switch |
| CN106887683B (en) * | 2017-02-28 | 2020-10-09 | 杭州博联智能科技股份有限公司 | PCB printed board radio frequency antenna system based on single-live-wire radio frequency panel switch |
| CN108199134A (en) * | 2018-01-11 | 2018-06-22 | 淮阴师范学院 | A kind of multi-frequency antenna device |
| CN108258394A (en) * | 2018-01-11 | 2018-07-06 | 淮阴师范学院 | A kind of production method of multi-frequency antenna device |
| CN108258394B (en) * | 2018-01-11 | 2019-11-01 | 淮阴师范学院 | A kind of production method of multi-frequency antenna device |
| CN108199134B (en) * | 2018-01-11 | 2020-03-27 | 淮阴师范学院 | Multi-frequency antenna device |
| CN112271446A (en) * | 2020-08-20 | 2021-01-26 | 珠海格力电器股份有限公司 | Concentric semicircular microstrip antenna and wireless sensor antenna based on smart home |
| CN112271446B (en) * | 2020-08-20 | 2024-04-05 | 珠海格力电器股份有限公司 | Concentric semicircular microstrip antenna and wireless sensor antenna based on smart home |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110928 Termination date: 20150106 |
|
| EXPY | Termination of patent right or utility model |