CN202068407U - Vector antenna tuner - Google Patents
Vector antenna tuner Download PDFInfo
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- CN202068407U CN202068407U CN2011201496970U CN201120149697U CN202068407U CN 202068407 U CN202068407 U CN 202068407U CN 2011201496970 U CN2011201496970 U CN 2011201496970U CN 201120149697 U CN201120149697 U CN 201120149697U CN 202068407 U CN202068407 U CN 202068407U
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Abstract
The utility model relates to a vector antenna tuner. A radio-frequency signal input terminal of a detection module of the vector antenna tuner connects with a radio-frequency signal output terminal of a radio host machine. The radio-frequency signal output terminal connects with an input terminal of a radio-frequency network module through a selector switch. A vector impedance measurement module connects with the radio-frequency network module through the selector switch. An output terminal of the radio-frequency network module connects with the antenna. A frequency signal detected by the detection module is transmitted to a DSP (Digital Signal Processor) and another control signal of the DSP controls the vector impedance measurement module for condition measuring of the antenna. Antenna impedance matching data measured by the vector impedance measurement module is transmitted to the DSP for calculating out form and number of the radio-frequency networks. Then the other control signal of the DSP controls the radio-frequency network module for realizing impedance matching. In the utility model, the vector principle is applied to the impedance matching of antenna. Compared to antenna tuning in scalar technology, the vector antenna tuner in the utility model has advantages of low time consumption and high precision.
Description
Technical field
The utility model belongs to the short wave communication technical field, is specifically related to a kind of vector antenna tuner, is applicable to vehicle-mounted short-wave antenna and vehicle-mounted short-wave radio set.
Background technology
The tuning employing of China's antenna at present be " scalar " technology.The main feature of this technology is a stepping, by adding and subtracting the element in the antenna tuning network one by one, reaches final impedance matching.Adopt the antenna tuner of " scalar " technology, in the process of coupling antenna impedance, length consuming time, tuning low precision can not satisfy the requirement of high-speed radio telecommunication.
The content of invention
The technical problem that the utility model solves: design a kind of vector antenna tuner, the vector principle is applied to the impedance matching of antenna, the Antenna Impedance Matching length consuming time that exists in " scalar " technology of solution, the problem of low precision, improve the radio propagation effect, satisfy the requirement of high-speed radio telecommunication.
Technical solution of the present utility model: a kind of vector antenna tuner comprises detection module, vector impedance measurement module and dsp processor.The radio-frequency (RF) signal input end of described detection module connects the radiofrequency signal output of radio station main frame, the radiofrequency signal output of detection module is connected through the input of diverter switch with the radio frequency network module, the vector impedance measurement module is connected with the radio frequency network module through diverter switch, and the output of radio frequency network module is connected with antenna; The detected frequency signal of detection module is delivered to dsp processor, one tunnel control signal control vector impedance measurement module of dsp processor carries out the measurement of antenna condition, the Antenna Impedance Matching data that the vector impedance measurement module is measured are delivered to form and the quantity that dsp processor calculates required radio frequency network again, and another road control signal control radio frequency network module by dsp processor reaches impedance matching again.
When dsp processor control vector impedance measurement module carried out the measurement of antenna condition, diverter switch switched to radio frequency network and vector impedance measurement module on-state; When dsp processor control radio frequency network module reached impedance matching, diverter switch switched to radio frequency network and detection module on-state, carries out normal communication work, and the voltage standing wave ratio measuring ability of detection module is opened simultaneously.
Described vector impedance measurement module is made up of DDS signal source, reflection bridge and sampling and A/D converter; The test signal one tunnel that the DDS signal source produces is as the reference signal of standard, and another road is loaded on the tested antenna as the vector pumping signal that testing impedance is provided; Use reflection bridge as directional coupler, described radio frequency network and antenna impedance are as an arm of reflection bridge, the reflected signal of antenna changes unbalanced transformation by balance, obtain corresponding digital information and send into dsp processor through sampling and A/D converter, dsp processor calculates accurate Antenna Impedance Matching data according to the accurate numerical value that measures.
Described radio frequency network is made up of switchable capacitive module C1, switchable capacitive module C2, switchable capacitive module C3, variable inductance module L1, variable inductance module L2, and C1, C2, C3, L1, L2 all control by dsp processor.
Advantage that the utility model compared with prior art has and effect:
1, the utility model applies to the impedance matching of antenna with the vector principle, and is tuning than the antenna of " scalar " technology, has weak point consuming time, advantage of high precision.
2, the utility model adopts the vector impedance measurement module that antenna and radio frequency network parameter are detected, sample and handle, calculate definite impedance information and required form and the number of elements of radio frequency network by vector, avoid the process of progressively going forward one by one, reached the purpose that shortens tuning period.
Description of drawings
Fig. 1 is a circuit block diagram of the present utility model,
Fig. 2 is the circuit block diagram of the utility model vector impedance measurement module,
Fig. 3 is the utility model radio frequency network schematic diagram.
Embodiment
1,2,3 a kind of embodiment of the present utility model is described in conjunction with the accompanying drawings.
A kind of vector antenna tuner comprises detection module, communication module, vector impedance measurement module and dsp processor.The radio-frequency (RF) signal input end of described detection module connects the radiofrequency signal output of radio station main frame, the radiofrequency signal output of detection module is connected through the input of diverter switch with the radio frequency network module, the vector impedance measurement module is connected with the radio frequency network module through diverter switch, and the output of radio frequency network module is connected with antenna; The detected frequency signal of detection module is delivered to dsp processor, one tunnel control signal control vector impedance measurement module of dsp processor carries out the measurement of antenna condition, the Antenna Impedance Matching data that the vector impedance measurement module is measured are delivered to form and the quantity that dsp processor calculates required radio frequency network again, and another road control signal control radio frequency network module by dsp processor reaches impedance matching again.Described radio frequency network is made up of switchable capacitive module C1, switchable capacitive module C2, switchable capacitive module C3, variable inductance module L1, variable inductance module L2, and C1, C2, C3, L1, L2 all control by dsp processor.Described communication module has the effect of carrying out information exchange with main frame.
When dsp processor control vector impedance measurement module carried out the measurement of antenna condition, diverter switch switched to radio frequency network and vector impedance measurement module on-state; When dsp processor control radio frequency network module reached impedance matching, diverter switch switched to radio frequency network and detection module on-state, carries out normal communication work, and the voltage standing wave ratio measuring ability of detection module is opened simultaneously.
Described vector impedance measurement module is made up of DDS signal source, reflection bridge and sampling and A/D converter; The test signal one tunnel that the DDS signal source produces is as the reference signal of standard, and another road is loaded on the tested antenna as the vector pumping signal that testing impedance is provided; Use reflection bridge as directional coupler, described radio frequency network and antenna impedance are as an arm of reflection bridge, the reflected signal of antenna changes unbalanced transformation by balance, obtain corresponding digital information and send into dsp processor through sampling and A/D converter, dsp processor is according to the accurate numerical value that measures, utilize error theory to weed out the various errors of system, calculate accurate Antenna Impedance Matching data.
The course of work: communication module and main frame are set up and are got in touch, and receive work order and start working, and the main frame emitting radio frequency signal is to detection module simultaneously; Detection module detects the frequency information of current demand signal and passes to dsp processor, carry out the measurement of antenna condition by dsp processor control vector impedance measurement module, this moment, diverter switch was in radio frequency network and vector impedance measurement module on-state, sending dsp processor back to after the A/D conversion calculates, obtain form and quantity that antenna impedance reaches the required radio frequency network of coupling, control the radio frequency network module simultaneously and change to required state, reach impedance matching.At this moment diverter switch switches to radio frequency network and detection module on-state, carries out normal communication work, and detection module real-time voltage standing-wave ratio measuring ability is opened.
Claims (4)
1. vector antenna tuner, comprise detection module, vector impedance measurement module and dsp processor, it is characterized in that: the radio-frequency (RF) signal input end of described detection module connects the radiofrequency signal output of radio station main frame, the radiofrequency signal output of detection module is connected through the input of diverter switch with the radio frequency network module, the vector impedance measurement module is connected with the radio frequency network module through diverter switch, and the output of radio frequency network module is connected with antenna; The detected frequency signal of detection module is delivered to dsp processor, one tunnel control signal control vector impedance measurement module of dsp processor carries out the measurement of antenna condition, the Antenna Impedance Matching data that the vector impedance measurement module is measured are delivered to form and the quantity that dsp processor calculates required radio frequency network again, and another road control signal control radio frequency network module by dsp processor reaches impedance matching again.
2. vector antenna tuner according to claim 1 is characterized in that: when dsp processor control vector impedance measurement module carried out the measurement of antenna condition, diverter switch switched to radio frequency network and vector impedance measurement module on-state; When dsp processor control radio frequency network module reached impedance matching, diverter switch switched to radio frequency network and detection module on-state, carries out normal communication work, and the voltage standing wave ratio measuring ability of detection module is opened simultaneously.
3. according to claim 1 or 2 or 3 described vector antenna tuners, it is characterized in that: described vector impedance measurement module is made up of DDS signal source, reflection bridge and sampling and A/D converter; The test signal one tunnel that the DDS signal source produces is as the reference signal of standard, and another road is loaded on the tested antenna as the vector pumping signal that testing impedance is provided; Use reflection bridge as directional coupler, described radio frequency network and antenna impedance are as an arm of reflection bridge, the reflected signal of antenna changes unbalanced transformation by balance, obtain corresponding digital information and send into dsp processor through sampling and A/D converter, dsp processor calculates accurate Antenna Impedance Matching data according to the accurate numerical value that measures.
4. vector antenna tuner according to claim 3, it is characterized in that: described radio frequency network is made up of switchable capacitive module C1, switchable capacitive module C2, switchable capacitive module C3, variable inductance module L1, variable inductance module L2, and C1, C2, C3, L1, L2 all control by dsp processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201496970U CN202068407U (en) | 2011-05-06 | 2011-05-06 | Vector antenna tuner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201496970U CN202068407U (en) | 2011-05-06 | 2011-05-06 | Vector antenna tuner |
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| Publication Number | Publication Date |
|---|---|
| CN202068407U true CN202068407U (en) | 2011-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011201496970U Expired - Fee Related CN202068407U (en) | 2011-05-06 | 2011-05-06 | Vector antenna tuner |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103020562A (en) * | 2012-12-12 | 2013-04-03 | 深圳市德卡科技有限公司 | Ultrahigh frequency radio frequency identification device (RFID) self-adaptive antenna impedance matching method |
| CN106936523A (en) * | 2015-12-31 | 2017-07-07 | 中富通股份有限公司 | A kind of SCM Based communication antenna standing-wave ratio on-line checking module |
| CN111049538A (en) * | 2019-12-31 | 2020-04-21 | 陕西烽火电子股份有限公司 | Method for improving antenna radiation based on antenna tuner output current detection |
| CN112713904A (en) * | 2020-12-23 | 2021-04-27 | 陕西烽火电子股份有限公司 | Composite tuning network and antenna tuner |
| CN116405042A (en) * | 2023-05-31 | 2023-07-07 | 广州博远装备科技有限公司 | Automatic antenna tuning circuit and system |
-
2011
- 2011-05-06 CN CN2011201496970U patent/CN202068407U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103020562A (en) * | 2012-12-12 | 2013-04-03 | 深圳市德卡科技有限公司 | Ultrahigh frequency radio frequency identification device (RFID) self-adaptive antenna impedance matching method |
| CN103020562B (en) * | 2012-12-12 | 2015-07-22 | 深圳市德卡科技有限公司 | Ultrahigh frequency radio frequency identification device (RFID) self-adaptive antenna impedance matching method |
| CN106936523A (en) * | 2015-12-31 | 2017-07-07 | 中富通股份有限公司 | A kind of SCM Based communication antenna standing-wave ratio on-line checking module |
| CN111049538A (en) * | 2019-12-31 | 2020-04-21 | 陕西烽火电子股份有限公司 | Method for improving antenna radiation based on antenna tuner output current detection |
| CN112713904A (en) * | 2020-12-23 | 2021-04-27 | 陕西烽火电子股份有限公司 | Composite tuning network and antenna tuner |
| CN116405042A (en) * | 2023-05-31 | 2023-07-07 | 广州博远装备科技有限公司 | Automatic antenna tuning circuit and system |
| CN116405042B (en) * | 2023-05-31 | 2023-08-22 | 广州博远装备科技有限公司 | Automatic antenna tuning circuit and system |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111207 Termination date: 20190506 |