CN204558653U - A kind of shortwave whip antenna Tuning Control device based on inductance weight-coefficient compromise - Google Patents
A kind of shortwave whip antenna Tuning Control device based on inductance weight-coefficient compromise Download PDFInfo
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- CN204558653U CN204558653U CN201520234858.4U CN201520234858U CN204558653U CN 204558653 U CN204558653 U CN 204558653U CN 201520234858 U CN201520234858 U CN 201520234858U CN 204558653 U CN204558653 U CN 204558653U
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Abstract
The utility model relates to a kind of shortwave whip antenna Tuning Control device based on inductance weight-coefficient compromise, it is characterized in that being provided with 1.6MHz ~ 30MHz emission power amplifier, impedance matching box, coupling loop and the amplitude detection circuit, the weight coefficient that are connected successively with the signal of telecommunication to arrange electric inductance array and Drive and Control Circuit, shortwave whip antenna, and arrange with amplitude detection circuit, weight coefficient the controller that electric inductance array Drive and Control Circuit is connected with coupling loop respectively by data wire.The utility model has the advantages that: automatically realize the resonance matching of whip antenna to short wavelength emissions signal, be easy to the frequency resolution improving shortwave whip antenna resonance matching, according to the parameter in memory, circuit can also be quickly recovered to matching status.
Description
Technical field
The utility model relates to antenna tuning unit, particularly the portable whip antenna automatic tuning technology of a kind of short-wave transmitter.
Background technology
Along with the development of short wave communication new technology, the requirement of short wave communication radio station to antenna matching technique is more and more higher.Short-wave transmitter forms electromagnetic field width by antenna and penetrates, and require that antenna is to the resonance that transmits, output electromagnetic field width is penetrated by force, and operating distance is far away.When antenna does not mate with transmitter power, can cause much bad consequence, the mismatch of antenna easily causes power output to decline, and affects the steady operation of transmitter, reliability decrease, the series of problems such as wave distortion.So need to regulate the parameter of antenna-matching circuit to make to reach resonance matching state between transmitter and antenna.
The effect of antenna tuner is more and more important, and its performance index directly affect radio station overall performance.Conveniently the mating of short-wave transmitter and short-wave antenna, also there is the mode adopting broad-band antenna, but in the scope of all band (1.6 ~ 30MHz), all meet that standing-wave ratio is good and radiation efficiency is high requirement is more difficult.
In short-wave antenna resonance matching detection technique, conventional detection method has antenna impedance to detect and antenna standing wave ratio detection mode, these two kinds of detection methods require higher to the extraction of antenna feed point place signal, for accomplishing that at shortwave all band circuit characteristic is consistent very difficult, and circuit is also more complicated, more effective Method and Technology means need be found.
Radiation resistance is the ratio of the effective current square of radiant power and the distributing point of transmitter transmitting antenna, and radiation resistance is an equivalent resistance, replaces the actual emanations power of antenna with it.Its size depends on the wavelength of the size of antenna, profile and distributing point.Effect because of transmitting antenna is radiated electromagnetic wave, therefore always suitably selects the size and dimension of antenna, makes radiation resistance larger as far as possible.The single antenna of usual title 1/4 wavelength is whip antenna, and when antenna length equals 1/4 wavelength corresponding to operating frequency, antenna is pure resistance.
For portable 2.4 whip antennas, the wavelength that 1.6MHz ~ 30MHz signal is corresponding is 187.5m ~ 10m.1/4 wavelength of its correspondence is 46.875m ~ 2.5m, all be greater than the length of 2.4 whip antennas, therefore 2.4 whip antennas all can regard < 1/4 wavelength as within the scope of short-wave band, therefore 2.4 whip antennas can be equivalent to connecting of antenna radiation resistance and an electric capacity within the scope of short-wave band.At this moment can seal in an inductance, offset the series equivalent capacitance of antenna, make antenna generation resonance.The series capacitance of the lower equivalence of frequency is larger, and the electric induction at this moment sealed in is larger.Therefore shortwave whip antenna Tuning Control device realizes mating between transmitter with shortwave whip antenna by the inductance parameters in adjustment whip antenna match circuit.
Summary of the invention
Technical problem to be solved in the utility model is: provide a kind of shortwave whip antenna Tuning Control device based on inductance weight-coefficient compromise, to overcome the defect of above-mentioned prior art existence.
The utility model solves its technical problem and adopts following technical scheme:
The shortwave whip antenna Tuning Control device based on inductance weight-coefficient compromise that the utility model provides, it is provided with 1.6MHz ~ 30MHz emission power amplifier, impedance matching box, coupling loop and the amplitude detection circuit, the weight coefficient that are connected successively with the signal of telecommunication and arranges electric inductance array and Drive and Control Circuit, shortwave whip antenna, and arrange with amplitude detection circuit, weight coefficient the controller that electric inductance array Drive and Control Circuit is connected with coupling loop respectively by data wire.。
Inductance value in described weight coefficient electric inductance array is the proportionate relationship value of two times according to adjacent inductive ratio.
Described amplitude detection circuit is made up of the magnitude demodulator circuit be connected with coupling loop, and its monitoring shortwave whip antenna is to the resonance matching state of launching 1.6MHz ~ 30MHz signal that power amplifier exports.
Described amplitude detection circuit, shortwave whip antenna is flowed to controller to the resonance signal peak value in the resonance matching state of 1.6MHz ~ 30MHz signal that transmitter exports by coupling loop by it, and via controller process obtains the shortwave whip antenna coupling inductor combination value of pressing weighed value adjusting.
Described controller adopts inner flash storage, and the binary data corresponding to the inductor combination value of distributing by weighting ratio during to preserve antenna resonance matching status, after powering on, returns to rapidly former resonance matching status according to these data again.
The utility model compared with prior art has following main advantage:
1. improve the reliability of device:
Shortwave whip antenna tuning control system based on inductance weight-coefficient compromise simplifies the automatic tuning matching process of shortwave whip antenna to 1.6MHz ~ 30MHz signal that transmitter exports.When shortwave whip antenna is with when mating short frequency signal resonance that inductance exports emission power amplifier, antenna base current is maximum, aerial head voltage is the highest, the utility model detects the current amplitude of antenna bottom by coupling loop, comparatively its detection enormously simplify testing process, also improves the reliability of device.
2. can realize the fast automatic tuning control of shortwave whip antenna:
Shortwave whip antenna tuning control system based on inductance weight-coefficient compromise is scanned by binary digit, the resonance coupling amplitude of shortwave whip antenna is detected in conjunction with amplitude detection circuit, several circulation through arranging can realize the tuning automatic control of shortwave whip antenna, has feature quickly and easily.
3. can improve the frequency resolution of shortwave whip antenna resonance matching:
Shortwave whip antenna tuning control system tuning precision based on inductance weight-coefficient compromise is easy to adjustment.Because the inductance in electric inductance array distributed according to the weights of representative, so can be controlled by binary digit amount according to weights relation, the number that only need increase inductance in binary system electric inductance array can improve the frequency resolution of shortwave whip antenna resonance matching.
4. according to the parameter in memory, circuit can be quickly recovered to matching status:
Shortwave whip antenna tuning control system based on inductance weight-coefficient compromise is preserved by the inner flash memory of controller, and signal reaches the binary code of peak value stored in the flash memory of controller inside.After power down, configuration parameter can not be lost, therefore according to the parameter in memory, circuit can be quickly recovered to matching status.
Accompanying drawing explanation
Fig. 1 is a kind of shortwave whip antenna Tuning Control device the general frame based on inductance weight-coefficient compromise.
Fig. 2 is a kind of structured flowchart of the shortwave whip antenna Tuning Control device testing circuit based on inductance weight-coefficient compromise.
Fig. 3 is electric inductance array and the control principle drawing of weights arrangement.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail.
The shortwave whip antenna Tuning Control device based on inductance weight-coefficient compromise that the utility model provides, its structure as shown in Figure 1 to Figure 3, be provided with 1.6MHz ~ 30MHz emission power amplifier, impedance matching box, coupling loop and the amplitude detection circuit, the weight coefficient that are connected successively with the signal of telecommunication to arrange electric inductance array and Drive and Control Circuit, shortwave whip antenna, and arrange with amplitude detection circuit, weight coefficient the controller that electric inductance array Drive and Control Circuit is connected with coupling loop respectively by data wire; Coupling loop and amplitude detection circuit detect the resonance matching amplitude of shortwave whip antenna.Controller scan control presses weights accurate adjustment whip antenna coupling inductor combination value, gets binary sequence corresponding to amplitude detection circuit maximum amplitude as the switching signal controlling electric inductance array, realizes whip antenna and mate the automatic tuning of short wavelength emissions signal.
The utility model concrete structure by coupling loop voltage sampling, detecting circuit, A/D conversion, controller, drive circuit of magnetic latching relay, arrange electric inductance array etc. by weights and form.Wherein: coupling loop and amplitude detection circuit are launched power amplifier impedance matching box at 1.6MHz ~ 30MHz and pressed weights and arrange between electric inductance array and shortwave whip antenna.Controller adjustment controls the combined electrical inductance value of pressing in the electric inductance array of weighting ratio distribution, realizes the tuning control of shortwave whip antenna.
Inductance value in described weight coefficient electric inductance array is the proportionate relationship value of two times according to adjacent inductive ratio.
Described amplitude detection circuit is made up of the magnitude demodulator circuit be connected with coupling loop, and it monitors shortwave whip antenna to the resonance matching state of 1.6MHz ~ 30MHz signal that emission power amplifier exports,
Described weights arrangement electric inductance array, shortwave whip antenna is flowed to controller to the resonance signal peak value launching the shortwave resonance matching state exported by coupling loop by it, and via controller process obtains the shortwave whip antenna coupling inductor combination value of pressing weighed value adjusting.
Press the binary data corresponding to inductive bank resultant that weighting ratio distributes when described controller adopts inner flash storage to preserve antenna resonance matching status, after powering on again, return to rapidly former resonance matching status according to these data.
See Fig. 2, coupling loop voltage sampling, to obtain power amplifier impedance matching network to deliver to shortwave whip antenna short-wave signal through electric inductance array, then carries out peakvalue's checking through detecting circuit, then gives controller by A/D conversion and calculate signal peak.Controller carries out binary digit scanning to electric inductance array, and the amplitude after A/D conversion is sent the inner flash of controller to preserve.Controller compares array binary system amplitude data, gets the maximum corresponding electric inductance array of wherein detected amplitude and switches binary data as control signal, control magnetic latching relay and drive electric inductance array, make shortwave whip antenna be in resonance matching status.
As shown in Figure 3,1.6MHz ~ 30MHz signal that emission power amplifier exports arranges electric inductance array by coupling loop through weight coefficient by impedance matching box and delivers to shortwave whip antenna for the electric inductance array of weights arrangement and control principle.Coupling loop and amplitude detection circuit detect the resonance matching amplitude of shortwave whip antenna and send controller.The output of controller drives magnetic latching relay via triode, magnetic latching relay adopts the pulsed drive produced by controller, maintain without the need to electric current after magnetic latching relay switch motion, switching over needs another current impulse to drive, therefore needs two triodes to switch driving.Controller, through the resonant inductance value of several multiple scanning process accurate adjustment shortwave whip antenna, automatically realizes whip antenna and exports the tuning of short-wave signal to launching power amplifier.Inductance wherein in electric inductance array adopts series system access, and such total inductance equals each shunt inductance sum.If branch road minimum inductance holds L1=L, then adjacent inductive is L2=2L, L3=2L2=4L ... it is by that analogy, as shown in table 1..
As shown in Table 1, the inductance value corresponding to 8 bit binary number amounts is by binary weights distribution, and 8 binary systems have 256 kinds of combinations.Being aware of arbitrary 8 binary codes must have an inductance value corresponding with it, and maximum induction value is 255L, and minimum inductance value is L.Obviously when needing only to need the inductance number increased in proportion in electric inductance array to realize when increasing control precision and scope, very convenient.And namely this relation can be controlled by toggle switch, facilitate the debugging of system, be also convenient to the realization of the functions such as power down protection.
After powering on, system first carries out initialization, controller controls magnetic latching relay by drive circuit and carries out binary digit scanning (control logic data step to 11111111 from 00000000) to electric inductance array, while scanning, the amplitude of the shortwave whip antenna distributing point that coupling loop senses is detected by amplitude detection circuit, the amplitude detected send controller process after A/D conversion, the series inductance combined value of the corresponding different weights distribution of different binary system control logic data, when the total inductance value of weighed combination is shortwave whip antenna resonance coupling inductance just, amplitude detection circuit output amplitude is maximum.
In order to reduce amplitude detection error, improve the reliability detecting data.Take scan round detection mode, arrange after 3 scanning, find out the binary system control logic data that Amplitude maxima is corresponding, controller controls magnetic latching relay acquisition according to this logical data and mates inductance value accordingly, and this logical data is kept in the flash storage of controller inside, now antenna has maximum amplitude output, achieves the Tuning Control of shortwave whip antenna.
The above-mentioned shortwave whip antenna Tuning Control device based on inductance weight-coefficient compromise that the utility model provides, its course of work is as follows:
1.6MHz ~ 30MHz the signal exported from emission power amplifier drives shortwave whip antenna by impedance matching box through weight coefficient arrangement electric inductance array, controller presses the inductance value of weights in several multiple scanning adjustment electric inductance array according to operating frequency, and coupling loop and amplitude detection circuit detect the resonance matching state of electric inductance array and shortwave whip antenna.Get the switching signal of the binary sequence corresponding to testing circuit maximum amplitude as control electric inductance array, weights scanning adjustment shortwave whip antenna coupling inductance value is pressed by controlling magnetic latching relay, make detection signal reach peak value and keep stable, by now pressing the binary code of weights distribution stored in the flash memory of controller inside, realizing shortwave whip antenna and the automatic tuning of 1.6MHz ~ 30MHz signal that emission power amplifier exports is mated.
Its course of work first carries out binary digit scan control by controller to the electric inductance array of distributing by weighting ratio, detect the amplitude of shortwave whip antenna distributing point in conjunction with amplitude detection circuit, the amplitude detected sent the inner flash memory of controller to preserve after A/D conversion.The cycle-index of scanning, detection, preservation can be set, get the control switching signal of the electric inductance array that sequence of binary digits corresponding to maximum amplitude point is distributed as the weighting ratio of correspondence, the resonance matching circuit of corresponding inductance access shortwave whip antenna when weights are 1, when being 0, corresponding inductance disconnects, and is the resonance coupling inductance of shortwave whip antenna by the total inductance value of weighed combination.Now realize the Tuning Control of shortwave whip antenna, coordinate power amplifier impedance matching box can obtain maximum transmission power and export.
Table 1 capacitor array table
| Data bit | D0 | D1 | D2 | D3 | D4 | D5 | D6 | D7 |
| Electric capacity label | L1 | L2 | L3 | L4 | L5 | L6 | L7 | L8 |
| Capacitance | L | 2L | 4L | 8L | 16L | 32L | 64L | 128L |
Claims (5)
1. the shortwave whip antenna Tuning Control device based on inductance weight-coefficient compromise, it is characterized in that being provided with 1.6MHz ~ 30MHz emission power amplifier, impedance matching box, coupling loop and the amplitude detection circuit, the weight coefficient that are connected successively with the signal of telecommunication to arrange electric inductance array and Drive and Control Circuit, shortwave whip antenna, and arrange with amplitude detection circuit, weight coefficient the controller that electric inductance array Drive and Control Circuit is connected with coupling loop respectively by data wire.
2. the shortwave whip antenna Tuning Control device based on inductance weight-coefficient compromise according to claim 1, the inductance value that it is characterized in that in described weight coefficient electric inductance array is the proportionate relationship value of two times according to adjacent inductive ratio.
3. the shortwave whip antenna Tuning Control device based on inductance weight-coefficient compromise according to claim 1, is characterized in that described amplitude detection circuit is made up of the magnitude demodulator circuit be connected with coupling loop.
4. the shortwave whip antenna Tuning Control device based on inductance weight-coefficient compromise according to claim 3, it is characterized in that described amplitude detection circuit, shortwave whip antenna is flowed to controller to the resonance signal peak value in the resonance matching state of 1.6MHz ~ 30MHz signal that emission power amplifier exports by coupling loop by it, and via controller process obtains the shortwave whip antenna coupling inductor combination value of pressing weighed value adjusting.
5. the shortwave whip antenna Tuning Control device based on inductance weight-coefficient compromise according to claim 1 or 4, it is characterized in that described controller adopts inner flash storage, when preserving antenna resonance matching status, press the binary data corresponding to inductor combination value that weighting ratio distributes.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520234858.4U CN204558653U (en) | 2015-04-17 | 2015-04-17 | A kind of shortwave whip antenna Tuning Control device based on inductance weight-coefficient compromise |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520234858.4U CN204558653U (en) | 2015-04-17 | 2015-04-17 | A kind of shortwave whip antenna Tuning Control device based on inductance weight-coefficient compromise |
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| CN204558653U true CN204558653U (en) | 2015-08-12 |
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| CN201520234858.4U Expired - Fee Related CN204558653U (en) | 2015-04-17 | 2015-04-17 | A kind of shortwave whip antenna Tuning Control device based on inductance weight-coefficient compromise |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109212463A (en) * | 2018-10-30 | 2019-01-15 | 中海油信息科技有限公司 | The directionless Radio Beacon of offshore oil platform matches humorous device and method automatically |
| 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 |
-
2015
- 2015-04-17 CN CN201520234858.4U patent/CN204558653U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109212463A (en) * | 2018-10-30 | 2019-01-15 | 中海油信息科技有限公司 | The directionless Radio Beacon of offshore oil platform matches humorous device and method automatically |
| 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 |
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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: 20150812 Termination date: 20200417 |