CN202159763U - Square wave-shaped active FM (frequency modulation) antenna of antenna radiating body - Google Patents
Square wave-shaped active FM (frequency modulation) antenna of antenna radiating body Download PDFInfo
- Publication number
- CN202159763U CN202159763U CN2011202112412U CN201120211241U CN202159763U CN 202159763 U CN202159763 U CN 202159763U CN 2011202112412 U CN2011202112412 U CN 2011202112412U CN 201120211241 U CN201120211241 U CN 201120211241U CN 202159763 U CN202159763 U CN 202159763U
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- antenna
- active
- radiating body
- utility
- square wave
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Abstract
The utility model discloses a square wave-shaped active FM (frequency modulation) antenna of an antenna radiating body. The antenna consists of an antenna radiating body and an amplifying match circuit connected with the antenna radiating body, and the antenna is characterized in that the microstrip antenna arranged in the antenna radiating body is shaped like a square wave. The active FM antenna integrates the circuit containing FM microprocessing and routing of the antenna arranged in a flexible circuit board to form a circuit chip with the FM antenna. The active FM antenna has smart volume, can be built in a shell of mobile digital product equipment such as mobile phones, tablet computers, MP3, car Bluetooth, GPS and the like, and occupies small space in the shell, so that the production cost is saved.
Description
Technical field
The utility model relates to FM antenna built-in in a kind of mobile communication equipment, and particularly a kind of antenna radiator becomes the active FM antenna of square waveform.
Background technology
Along with the mobile of more and more digital electric equipment, a lot of such as digital household appliances such as mobile phone, panel computer, MP3, MP4 in order to satisfy consumer's different demands, the function that all integrated FM broadcasting is listened in equipment.
As everyone knows, as the technology of existing comparative maturity, what conventional portable radio adopted is the antenna of rod-pulling type.This convenience simple in structure, but present digital electronic goods, especially mobile digital product; The brief introduction of general all relatively more exquisite outward appearances and attractive in appearance; Also ask most simultaneously cheapization of the compact and cost of equipment, heavy as the antenna shapes of this rod-pulling type, antenna takes up space again very much during use; Required preparation material cost is high again, can't satisfy the inexpensive requirement that existing consumer and businessman are pursued.
So; In epoch of the general meagre profit of this digital product nowadays; Function is listened in FM broadcasting and don't as for increasing the weight of production cost of products, this just need improve the structure of FM reception antenna possessing how to let these mobile digital products such as mobile phone, panel computer, MP3.
The utility model content
The utility model provides a kind of antenna radiator to become the active FM antenna of square waveform.The circuit that this active FM antenna will comprise the little processing of FM combines circuit bar that has the FM antenna of formation with the antenna cabling that is placed in the FPC; Its advantages of small volume can be built in such as mobile phone, panel computer, MP3, on-vehicle Bluetooth; In the casing of these mobile digital product facilities such as GPS; And space shared in casing is very little, has practiced thrift production cost.
The concrete technical scheme of the utility model is following:
Antenna radiator becomes the active FM antenna of square waveform, comprises antenna radiator and the amplification matching circuit that is connected with this antenna radiator, it is characterized in that microstrip antenna set in the said antenna radiator is shaped as square waveform.
In the such scheme, the plate body of said antenna radiator partly adopts printed circuit board (pcb) or flexible PCB (FPC) to prepare.
In the such scheme, the first match circuit module that said amplification matching circuit is connected with microstrip antenna by front end, auto bias circuit module and the second match circuit module that is connected with the rear end receiving chip are formed.
In the such scheme, said amplification matching circuit is connected with receiving chip through feeder line.
The described FM antenna of the utility model adopts the integrated amplification matching circuit of microwave device, has greatly widened the bandwidth of antenna, makes different frequent points weak effect distance reduce, and amplifier has the effect of active coupling, and by mutual conductance certain gain is provided.Reduce the influence of human body to built-in aerial.In addition, divide two-layer cabling as the antenna radiator of antenna passive part, connect through via hole, the radiant body of the antenna that extended has improved the efficient of FM antenna.And antenna volume diminishes, and adds active circuit, has increased the ability of antenna receiving signal.
Description of drawings
Further specify the utility model below in conjunction with accompanying drawing and embodiment.
Fig. 1 is the structured flowchart of the said FM antenna of the utility model.
Fig. 2 is the amplification matching circuit theory diagram of the said FM antenna of the utility model.
Fig. 3 is the physical circuit figure of the amplification matching circuit of the said FM antenna of the utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and be easy to understand understanding with effect, below in conjunction with concrete diagram, further set forth the utility model.
Referring to Fig. 1; The described antenna radiator of the utility model becomes the active FM antenna of square waveform; This antenna comprises antenna radiator 1 and the amplification matching circuit 2 that is connected with this antenna radiator 1, and wherein, microstrip antenna 3 set in the antenna radiator 1 is shaped as square waveform.The cabling mode of this square waveform has increased track lengths, thereby helps radiation broadcast receiver low-frequency signals, and this kind cabling increased the perception of antenna, makes and in the certain structure scope, obtains littler space mode.
It is to be noted that the plate body of antenna radiator partly adopts printed circuit board (pcb) or flexible PCB (FPC) to prepare.Wherein, adopt the FM of PCB material to put antenna, be not easy to change the structure of antenna because radiant body designs on same PCB with amplifying circuit; So be mainly used on the terminal equipments such as MID, PND, panel computer; And adopt the FM built-in aerial of FPC material to meet on the less terminal owing to the foldability of FPC material is feasible, so be mainly used in mobile phone, PDA, LCM, MP3, MP4; On-vehicle Bluetooth is on the compact apparatus such as GPS.
Certainly; Whole FM antenna is when work; Broadcast singal gets into the low noise amplifier (LNA) in the amplification matching circuit through antenna radiator, imports the broadcast singal after amplifying into the receiving chip or the receiving circuit (both FM receiver modules on the receiving equipment) of receiving equipment.Because the aerial radiation face adopts capacitive or inductive antenna, can be less than quarter-wave, antenna and radio station electromagnetic wave produce resonance and receive the FM broadcast singal.What the size of antenna can become like this is littler.
Referring to Fig. 2, the first match circuit module that amplification matching circuit is connected with microstrip antenna by front end, auto bias circuit module and the second match circuit module that is connected with the rear end receiving chip are formed.
In addition, amplification matching circuit is connected with receiving chip through feeder line.
When practical application, the amplification matching circuit concrete structure of the utility model antenna concerns referring to Fig. 3.
More than show and described basic principle of the utility model and the advantage of principal character and the utility model.The technical staff of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the specification that the utility model just is described; Under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications, and these variations and improvement all fall in the utility model scope that requires protection.The utility model requires protection range to be defined by appending claims and equivalent thereof.
Claims (4)
1. antenna radiator becomes the active FM antenna of square waveform, comprises antenna radiator and the amplification matching circuit that is connected with this antenna radiator, it is characterized in that microstrip antenna set in the said antenna radiator is shaped as square waveform.
2. according to the active FM antenna of claim 1, it is characterized in that the plate body of said antenna radiator partly adopts printed circuit board or flexible PCB to prepare.
3. according to the active FM antenna of claim 1, it is characterized in that the first match circuit module that said amplification matching circuit is connected with microstrip antenna by front end, auto bias circuit module and the second match circuit module that is connected with the rear end receiving chip are formed.
4. according to the active FM antenna of claim 1, it is characterized in that said amplification matching circuit is connected with receiving chip through feeder line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202112412U CN202159763U (en) | 2011-06-21 | 2011-06-21 | Square wave-shaped active FM (frequency modulation) antenna of antenna radiating body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202112412U CN202159763U (en) | 2011-06-21 | 2011-06-21 | Square wave-shaped active FM (frequency modulation) antenna of antenna radiating body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202159763U true CN202159763U (en) | 2012-03-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202112412U Expired - Fee Related CN202159763U (en) | 2011-06-21 | 2011-06-21 | Square wave-shaped active FM (frequency modulation) antenna of antenna radiating body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202159763U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104183899A (en) * | 2013-05-22 | 2014-12-03 | 昆山骅盛电子有限公司 | Integrated antenna used for vehicle |
| CN104347930A (en) * | 2013-08-01 | 2015-02-11 | 苏州宝时得电动工具有限公司 | Apparatus equipped with flexible antenna |
| CN106961015A (en) * | 2017-04-01 | 2017-07-18 | 禾邦电子(苏州)有限公司 | A kind of built-in FM antennas |
-
2011
- 2011-06-21 CN CN2011202112412U patent/CN202159763U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104183899A (en) * | 2013-05-22 | 2014-12-03 | 昆山骅盛电子有限公司 | Integrated antenna used for vehicle |
| CN104347930A (en) * | 2013-08-01 | 2015-02-11 | 苏州宝时得电动工具有限公司 | Apparatus equipped with flexible antenna |
| CN106961015A (en) * | 2017-04-01 | 2017-07-18 | 禾邦电子(苏州)有限公司 | A kind of built-in FM antennas |
| CN106961015B (en) * | 2017-04-01 | 2024-03-22 | 禾邦电子(苏州)有限公司 | Built-in FM antenna |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI HIGH GAIN INFORMATION TECHNOLOGY CO., LTD Free format text: FORMER OWNER: WUXI HAIJI ELECTRONIC TECHNOLOGY CO., LTD. Effective date: 20120425 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 214028 WUXI, JIANGSU PROVINCE TO: 200233 XUHUI, SHANGHAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120425 Address after: 200233, room 418, 904 Guiping Road, Shanghai, Xuhui District Patentee after: Shanghai High Gain Information Technology Co., Ltd. Address before: 214028, third floor, block D, Information Technology Industrial Park, 21 Changjiang Road, Wuxi New District, Jiangsu Patentee before: Wuxi Haiji Electronic Technology Co.,Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 201702 Shanghai city Qingpu District No. 599, building 1, 3 Gaojing Road, Room 301 Patentee after: SHANGHAI HIGH GAIN INFORMATION TECHNOLOGY CO., LTD. Address before: 200233, room 418, 904 Guiping Road, Shanghai, Xuhui District Patentee before: Shanghai High Gain Information Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120307 Termination date: 20160621 |