CN106329132A - Frequency switching method for medium-wave antenna matching network - Google Patents
Frequency switching method for medium-wave antenna matching network Download PDFInfo
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- CN106329132A CN106329132A CN201510336877.2A CN201510336877A CN106329132A CN 106329132 A CN106329132 A CN 106329132A CN 201510336877 A CN201510336877 A CN 201510336877A CN 106329132 A CN106329132 A CN 106329132A
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Abstract
The invention discloses a frequency switching method for a medium-wave antenna matching network. It is specific to a condition that different antenna matching networks are required by different frequencies, capacitive parameters and inductive parameters of the antenna matching network are adjusted in a switch switching manner so as to achieve the purpose of rapid switching of the antenna matching network. The frequency switching method specifically comprises the following steps that the antenna matching network of a medium-wave transmitter is formed by capacitors, inductors and radio frequency diverter switches; and the capacitive parameters and inductive parameters, which satisfy requirements of different frequencies, in the antenna matching network are chosen by controlling the on and off of the radio frequency diverter switches, so as to realize the rapid matching of the antenna matching network to different frequencies.
Description
Technical field
The present invention relates to the frequency error factor technology of medium wave transmitting system, particularly relate to a kind of medium wave transmitting
The antenna matching network of machine change frequency time realize quick automatic switching frequency switching method.
Background technology
Medium wave am broadcast emission system, the most domestic or external a relatively-stationary time
The interior broadcast that can only meet a frequency.Fast frequency switching can not be realized as short wavelength emissions system broadcast.
Main cause is that relate to the adjustment point of resonance matching when to change and to broadcast frequency the most, amateur people
Member can not directly operate, and operates the most more complicated even professional participates in changing frequency.Not only want
Transmitter region of interest is adjusted, the allotting network of launching antenna of supporting relevant to transmitter with
Frequency also to make and adjusting targetedly.Existing antenna matching network can only meet a frequency
Join, when medium wave emission system frequency to be changed is broadcasted, device that antenna matching network is corresponding and coupling
Form all may be made corresponding change and make corresponding adjustment, therefore workload during frequency conversion simultaneously
Can be very big, completing the required time also can be the longest, so will certainly cause the relatively long of emission system
Time breaks, and affects the normal broadcast of transmitting station/stand.
Summary of the invention
It is an object of the invention to, solve the antenna matching network of existing medium wave transmitter when changing frequency
The problem existed, and the frequency switching method of the medium-wave antenna allotting network of a kind of new structure is provided,
To be solved technical problem is that make its when transmitter frequency conversion, for the difference required for different frequency
Antenna matching network, the form switched by switch is to the electric capacity of antenna matching network and inductance parameters
It is adjusted, thus reaches the purpose of antenna matching network quick automatic switching.
The object of the invention to solve the technical problems realizes by the following technical solutions.Foundation
The frequency switching method of a kind of medium-wave antenna allotting network that the present invention proposes, it comprises the following steps:
The antenna matching network of medium wave transmitter is constituted with electric capacity, inductance and radio frequency converting switch；And pass through
Control the break-make of radio frequency converting switch, to the electric capacity met in antenna matching network required for different frequency
And inductance parameters chooses, thus realize the antenna matching network Rapid matching to different frequency.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
The frequency switching method of aforesaid medium-wave antenna allotting network, the wherein break-make of radio frequency converting switch
It is to use 220V exchange remote power feeding to control.
The frequency switching method of aforesaid medium-wave antenna allotting network, wherein outside radio frequency converting switch
Enclose and add screening arrangement.
The frequency switching method of aforesaid medium-wave antenna allotting network, the wherein control to radio frequency converting switch
System and sample line all use double shield high frequency cable.
The frequency switching method of aforesaid medium-wave antenna allotting network, wherein when changing frequency, antenna is allocated
Network completed switching in 3 seconds.
The frequency switching method of aforesaid medium-wave antenna allotting network, wherein realizes the antenna of double frequency switching
Allotting network includes: the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity,
6th electric capacity, the 7th electric capacity, the first inductance, the second inductance, the 3rd inductance, the 4th inductance, first
Radio frequency converting switch, the second radio frequency converting switch, the 3rd radio frequency converting switch and the switching of the 4th radio frequency are opened
Close；Wherein in parallel with the first inductance and the 7th electric capacity after the first radio frequency converting switch and the first capacitances in series
Formed after the first parallel circuit, the second radio frequency converting switch and the second capacitances in series with the second inductance in parallel
Form the second parallel circuit, with the 3rd inductance in parallel after the 3rd radio frequency converting switch and the 3rd capacitances in series
Form the 3rd parallel circuit, in parallel with the 5th electric capacity after the 4th radio frequency converting switch and the 4th capacitances in series
Form the 4th parallel circuit, after the 4th inductance and the 6th capacitances in series, form the first series circuit；Wherein
First parallel circuit is connected between the first junction point and the second parallel circuit, and the second parallel circuit connects
Between the first parallel circuit and earth point, the 3rd parallel circuit be connected to power supply and the first junction point it
Between, the 4th parallel circuit and the first series circuit are connected between power supply and earth point.
The frequency switching method of aforesaid medium-wave antenna allotting network, wherein the first electric capacity be 136PF,
Two electric capacity are 118PF, the 3rd electric capacity is 658PF, the 4th electric capacity is 191PF, the 5th electric capacity is 1443PF,
6th electric capacity is 3000PF, the 7th electric capacity is 1000PF, the first inductance is 18.5 μ H, the second inductance
Be 38 μ H, the 3rd inductance be 7.49 μ H, the 4th inductance be 37.6 μ H.
The frequency switching method of aforesaid medium-wave antenna allotting network, wherein works at medium wave transmitter
During 1170KHz frequency, antenna matching network is by controlling the first radio frequency converting switch, the 3rd radio frequency switching
Switch and the 4th radio frequency converting switch are off, and the second radio frequency converting switch is in closure state,
Realize coupling；When medium wave transmitter works in 1098KHz frequency, antenna matching network is by controlling
First radio frequency converting switch, the 3rd radio frequency converting switch and the 4th radio frequency converting switch are in closure state,
Second radio frequency converting switch is off, it is achieved coupling.
The present invention compared with prior art has clear advantage and beneficial effect.By above-mentioned technical side
Case, the frequency switching method of the present invention a kind of medium-wave antenna allotting network at least has following advantages and has
Benefit effect: the present invention has broken traditional medium wave transmitting system and changed the theory of frequency, solves medium wave transmitting
The antenna matching network of machine changes the problem that frequency is difficult at short notice, it is achieved that when transmitter frequency conversion, pin
Quick automatic switching to the different antenna matching network required for different frequency.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the present invention's
Technological means, and can being practiced according to the content of description, and in order to allow the above-mentioned of the present invention and
Other objects, features and advantages can become apparent, and below especially exemplified by preferred embodiment, and coordinates attached
Figure, describes in detail as follows.
Accompanying drawing explanation
Fig. 1 is a preferred embodiment of the present invention to be realized double frequency at the antenna matching network of medium wave transmitter and cuts
The schematic diagram of the antenna matching network changed.
Detailed description of the invention
By further illustrating the technological means and merit that the present invention taked by reaching predetermined goal of the invention
Effect, below in conjunction with accompanying drawing and preferred embodiment, to a kind of medium-wave antenna allotment net proposed according to the present invention
Its detailed description of the invention of the frequency switching method of network, structure, feature and effect thereof, after describing in detail such as.
The frequency switching method of the medium-wave antenna allotting network of the present invention is for required for different frequency
Different antenna matching networks, the form switched by switch is to the electric capacity of antenna matching network and inductance
Parameter is adjusted, thus reaches the purpose that antenna matching network is switched fast.It specifically includes following
Step: constituted the antenna matching network of medium wave transmitter with electric capacity, inductance and radio frequency converting switch；With
And by controlling the break-make of radio frequency converting switch, to antenna matching network meeting required for different frequency
Electric capacity and inductance parameters choose, thus realize quick to different frequency of antenna matching network
Join.
Owing to the switching of antenna matching network switchs, need to be operated under the launching tower that electromagnetic field is the strongest
In between allotment, if using low-voltage to control, switching switch is likely to be due to high frequency under magnetic field environment and does
Disturbing and can cause misoperation, therefore after demonstration, we finally use 220V exchange remote power feeding to control radio frequency
Switching switches on-off.In order to avoid interference, the control of radio frequency converting switch and sample line all use double
Shielding high frequency cable, also installs screening arrangement additional in the periphery of radio frequency converting switch simultaneously, thus effectively
Solve radio frequency converting switch interference problem under high-intensity magnetic field, it is to avoid because high-frequency induction causes switch
The appearance of the phenomenon of misoperation, it is ensured that switch motion safe and reliable.
The frequency switching method of the medium-wave antenna allotting network of the present invention, can be in 3 seconds when changing frequency
Complete the automatic switchover of antenna matching network.
Refer to shown in Fig. 1, be that a preferred embodiment of the present invention allocates net at the antenna of medium wave transmitter
Network realizes the schematic diagram of the antenna matching network of double frequency switching.Wherein, it is achieved the antenna of double frequency switching is adjusted
Distribution network mainly by the first electric capacity C1-1, the second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4,
5th electric capacity C5, the 6th electric capacity C6, the 7th electric capacity C1-2, the first inductance L1, the second inductance L2,
3rd inductance L3, the 4th inductance L4, the first radio frequency converting switch K1, the second radio frequency converting switch K2,
3rd radio frequency converting switch K3 and the 4th radio frequency converting switch K4 composition.Wherein, the first radio frequency switching
Formation in parallel with the first inductance L1 and the 7th electric capacity C1-2 after switch K1 and the first electric capacity C1-1 series connection
First parallel circuit, with the second inductance L2 after the second radio frequency converting switch K2 and the second electric capacity C2 series connection
In parallel second parallel circuit that formed, the 3rd radio frequency converting switch K3 and the 3rd electric capacity C3 connect after with the
Three inductance in parallel L3 form the 3rd parallel circuit, the 4th radio frequency converting switch K4 and the 4th electric capacity C4 string
Formation in parallel with the 5th electric capacity C5 the 4th parallel circuit after connection, the 4th inductance L4 and the 6th electric capacity C6 string
The first series circuit is formed after connection；Wherein the first parallel circuit is connected to the first junction point A and second also
Between connection circuit, the second parallel circuit is connected between the first parallel circuit and earth point, and the 3rd is in parallel
Circuit is connected between power supply (B) and the first junction point A, the 4th parallel circuit and the first series circuit
It is connected between power supply (B, C) and earth point.These are only that the present invention realizes antenna matching network and cuts
The specific embodiment changed, the frequency switching method of the medium-wave antenna allotting network of the present invention can also
Realize three frequencies, or the switching of more multifrequency.
Wherein, the first electric capacity C1-1 be 136PF, the second electric capacity C2 be 118PF, the 3rd electric capacity C3
For 658PF, the 4th electric capacity C4 be 191PF, the 5th electric capacity C5 be 1443PF, the 6th electric capacity C6 be
3000PF, the 7th electric capacity C1-2 are 1000PF, the first inductance L1 is 18.5 μ H, the second inductance L2
Be 38 μ H, the 3rd inductance L3 be 7.49 μ H, the 4th inductance L4 be 37.6 μ H.Fig. 1 is only real
One specific embodiment of the antenna matching network of existing double frequency switching, the present invention realizes double frequency switching and also may be used
Use electric capacity, inductance and other type of attachment of switching switch, select the electric capacity of other numerical value, inductance
Constitute antenna matching network.
As it is shown in figure 1, when medium wave transmitter works in 1170KHz frequency, antenna matching network leads to
Cross control the first radio frequency converting switch K1, the 3rd radio frequency converting switch K3 and the 4th radio frequency converting switch
K4 is off, and the second radio frequency converting switch K2 is in closure state, it is achieved coupling；At medium wave
When transmitter works in 1098KHz frequency, antenna matching network is by controlling the first radio frequency converting switch
K1, the 3rd radio frequency converting switch K3 and the 4th radio frequency converting switch K4 are in closure state, and second penetrates
Frequency switching switch K2 is off, it is achieved coupling.
The above, be only presently preferred embodiments of the present invention, and the present invention not makees any form
On restriction, although the present invention is disclosed above with preferred embodiment, but is not limited to this
Bright, any those skilled in the art, in the range of without departing from technical solution of the present invention, when can profit
Make a little change with the technology contents of the disclosure above or be modified to the Equivalent embodiments of equivalent variations, but
Every without departing from technical solution of the present invention content, the technical spirit of the foundation present invention is to above example institute
Any simple modification, equivalent variations and the modification made, all still falls within the range of technical solution of the present invention.
Claims (8)
1. the frequency switching method of a medium-wave antenna allotting network, it is characterised in that it includes following step
Rapid: constituted the antenna matching network of medium wave transmitter with electric capacity, inductance and radio frequency converting switch；And
By controlling the break-make of radio frequency converting switch, needed for antenna matching network meets different frequency
Electric capacity and the inductance parameters wanted are chosen, thus realize quick to different frequency of antenna matching network
Coupling.
The frequency switching method of medium-wave antenna allotting network the most according to claim 1, its feature
It is that the break-make of wherein radio frequency converting switch is to use 220V exchange remote power feeding to control.
The frequency switching method of medium-wave antenna allotting network the most according to claim 1, its feature
It is that wherein periphery at radio frequency converting switch adds screening arrangement.
The frequency switching method of medium-wave antenna allotting network the most according to claim 1, its feature
It is that wherein control and sample line to radio frequency converting switch all uses double shield high frequency cable.
The frequency switching method of medium-wave antenna allotting network the most according to claim 1, its feature
It is that, wherein when changing frequency, antenna matching network completed switching in 3 seconds.
The frequency switching method of medium-wave antenna allotting network the most according to claim 1, its feature
The antenna matching network being wherein to realize double frequency switching includes: the first electric capacity, the second electric capacity, the 3rd
Electric capacity, the 4th electric capacity, the 5th electric capacity, the 6th electric capacity, the 7th electric capacity, the first inductance, the second inductance,
3rd inductance, the 4th inductance, the first radio frequency converting switch, the second radio frequency converting switch, the 3rd radio frequency
Switching switch and the 4th radio frequency converting switch；Wherein after the first radio frequency converting switch and the first capacitances in series
With the first inductance and the 7th electric capacity is in parallel forms the first parallel circuit, the second radio frequency converting switch and second
Form the second parallel circuit, the 3rd radio frequency converting switch and the 3rd with the second inductance in parallel after capacitances in series
The 3rd parallel circuit, the 4th radio frequency converting switch and the 4th is formed with the 3rd inductance in parallel after capacitances in series
Formation in parallel with the 5th electric capacity the 4th parallel circuit, the 4th inductance and the 6th capacitances in series after capacitances in series
Rear formation the first series circuit；Wherein the first parallel circuit is connected to the first junction point and the second electricity in parallel
Between road, the second parallel circuit is connected between the first parallel circuit and earth point, the 3rd parallel circuit
Being connected between power supply and the first junction point, the 4th parallel circuit and the first series circuit are connected to power supply
And between earth point.
The frequency switching method of medium-wave antenna allotting network the most according to claim 6, its feature
Be that wherein the first electric capacity is 136PF, the second electric capacity is 118PF, the 3rd electric capacity is 658PF, the 4th
Electric capacity is 191PF, the 5th electric capacity is 1443PF, the 6th electric capacity is 3000PF, the 7th electric capacity is 1000PF,
First inductance is 18.5 μ H, the second inductance is 38 μ H, the 3rd inductance is 7.49 μ H, the 4th inductance
It is 37.6 μ H.
The frequency switching method of medium-wave antenna allotting network the most according to claim 7, its feature
Being wherein when medium wave transmitter works in 1170KHz frequency, antenna matching network is by controlling the
One radio frequency converting switch, the 3rd radio frequency converting switch and the 4th radio frequency converting switch are off,
Second radio frequency converting switch is in closure state, it is achieved coupling；1098KHz is worked at medium wave transmitter
During frequency, antenna matching network by control the first radio frequency converting switch, the 3rd radio frequency converting switch and
4th radio frequency converting switch is in closure state, and the second radio frequency converting switch is off, it is achieved
Coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510336877.2A CN106329132B (en) | 2015-06-17 | 2015-06-17 | A kind of frequency switching method of medium-wave antenna allotting network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510336877.2A CN106329132B (en) | 2015-06-17 | 2015-06-17 | A kind of frequency switching method of medium-wave antenna allotting network |
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| CN106329132A true CN106329132A (en) | 2017-01-11 |
| CN106329132B CN106329132B (en) | 2019-06-18 |
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| CN201510336877.2A Active CN106329132B (en) | 2015-06-17 | 2015-06-17 | A kind of frequency switching method of medium-wave antenna allotting network |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202221996U (en) * | 2011-09-23 | 2012-05-16 | 陕西烽火电子股份有限公司 | Frequency hopping antenna tuner for ultra short wave frequency hopping radio |
| CN202998080U (en) * | 2012-12-25 | 2013-06-12 | 陕西烽火电子股份有限公司 | Vehicle mounted antenna tuner |
| CN103490794A (en) * | 2013-09-09 | 2014-01-01 | 熊猫电子集团有限公司 | Variable shortwave antenna tuner matching network structure circuit |
| JP5829132B2 (en) * | 2012-01-12 | 2015-12-09 | 太陽誘電株式会社 | Matching circuit |
-
2015
- 2015-06-17 CN CN201510336877.2A patent/CN106329132B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202221996U (en) * | 2011-09-23 | 2012-05-16 | 陕西烽火电子股份有限公司 | Frequency hopping antenna tuner for ultra short wave frequency hopping radio |
| JP5829132B2 (en) * | 2012-01-12 | 2015-12-09 | 太陽誘電株式会社 | Matching circuit |
| CN202998080U (en) * | 2012-12-25 | 2013-06-12 | 陕西烽火电子股份有限公司 | Vehicle mounted antenna tuner |
| CN103490794A (en) * | 2013-09-09 | 2014-01-01 | 熊猫电子集团有限公司 | Variable shortwave antenna tuner matching network structure circuit |
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| CN106329132B (en) | 2019-06-18 |
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