CN106329132B - A kind of frequency switching method of medium-wave antenna allotting network - Google Patents
A kind of frequency switching method of medium-wave antenna allotting network Download PDFInfo
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- CN106329132B CN106329132B CN201510336877.2A CN201510336877A CN106329132B CN 106329132 B CN106329132 B CN 106329132B CN 201510336877 A CN201510336877 A CN 201510336877A CN 106329132 B CN106329132 B CN 106329132B
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Abstract
The invention relates to a kind of frequency switching methods of medium-wave antenna allotting network, it is for antenna matching network different required for different frequency, the capacitor of antenna matching network and inductance parameters are adjusted by way of switching, to achieve the purpose that antenna matching network is switched fast.It is specifically includes the following steps: constituted the antenna matching network of medium wave transmitter with capacitor, inductance and radio frequency converting switch；And the on-off by controlling radio frequency converting switch, it is chosen to capacitor and inductance parameters required for different frequency is met in antenna matching network, to realize antenna matching network to the Rapid matching of different frequency.
Description
Technical field
The present invention relates to the frequency error factor technologies of medium wave transmitting system, more particularly to a kind of antenna tune of medium wave transmitter
Distribution network realizes the frequency switching method of quick automatic switching when changing frequency.
Background technique
Medium wave am broadcast emission system, either domestic or foreign countries can only meet within a relatively-stationary time
The broadcast of one frequency.It cannot realize that fast frequency switching is broadcasted as short wavelength emissions system.Main cause is to work as to change broadcast
The adjustment point for being related to resonance matching when frequency is relatively more, and layman cannot directly operate, even professional participates in changing
Frequency operates also more complicated.Not only transmitter region of interest is adjusted, matched transmitting day related to transmitter
The allotting network of line is targetedly adjusted as frequency will also be made.Existing antenna matching network can only meet a frequency
Match, when medium wave emission system, which will change frequency, to be broadcasted, the corresponding device of antenna matching network and matched form may all be done
It changes accordingly out while making corresponding adjustment, therefore workload when frequency conversion can be very big, the time required for completing also can
It is very long, the relatively long of emission system certainly will be will cause in this way and broken, the normal broadcast for transmitting station/stand is influenced.
Summary of the invention
It is asked it is an object of the present invention to which the antenna matching network for solving existing medium wave transmitter is existing when changing frequency
Topic, and a kind of frequency switching method of new structural medium-wave antenna allotting network is provided, the technical problem to be solved is that make
It is in transmitter frequency conversion, for antenna matching network different required for different frequency, by way of switching pair
The capacitor and inductance parameters of antenna matching network are adjusted, to achieve the purpose that antenna matching network quick automatic switching.
The object of the invention to solve the technical problems adopts the following technical solutions to realize.It proposes according to the present invention
A kind of medium-wave antenna allotting network frequency switching method comprising following steps: with capacitor, inductance and radio frequency converting switch
Constitute the antenna matching network of medium wave transmitter；And the on-off by controlling radio frequency converting switch, in antenna matching network
Meet capacitor and inductance parameters required for different frequency to be chosen, to realize antenna matching network to the fast of different frequency
Speed matching.
The object of the invention to solve the technical problems also can be used following technical measures and further realize.
The frequency switching method of medium-wave antenna allotting network above-mentioned, wherein the on-off of radio frequency converting switch is using 220V
Exchange remote power feeding control.
The frequency switching method of medium-wave antenna allotting network above-mentioned, wherein adding screen in the periphery of radio frequency converting switch
Cover device.
The frequency switching method of medium-wave antenna allotting network above-mentioned, wherein control and sample line to radio frequency converting switch
It is all made of double shield high frequency cable.
The frequency switching method of medium-wave antenna allotting network above-mentioned, wherein antenna matching network is in 3 seconds when changing frequency
Complete switching.
The frequency switching method of medium-wave antenna allotting network above-mentioned, wherein realizing the antenna matching network packet of double frequency switching
It includes: first capacitor, the second capacitor, third capacitor, the 4th capacitor, the 5th capacitor, the 6th capacitor, the 7th capacitor, the first inductance,
Two inductance, third inductance, the 4th inductance, the first radio frequency converting switch, the second radio frequency converting switch, third radio frequency converting switch and
4th radio frequency converting switch；It is in parallel with the first inductance and the 7th capacitor after wherein the first radio frequency converting switch is connected with first capacitor
Form the first parallel circuit, the second radio frequency converting switch electricity in parallel with the formation second of the second inductance in parallel after connecting with the second capacitor
Road, third radio frequency converting switch with third inductance in parallel form third parallel circuit after connecting with third capacitor, and the 4th radio frequency cuts
The 4th parallel circuit of formation in parallel with the 5th capacitor after switch is connected with the 4th capacitor is changed, after the 4th inductance is connected with the 6th capacitor
Form the first series circuit；Wherein the first parallel circuit is connected between the first tie point and the second parallel circuit, and second is in parallel
Between the first parallel circuit and grounding point, third parallel circuit is connected between power supply and the first tie point circuit connection, the
Four parallel circuits and the first series circuit are connected between power supply and grounding point.
The frequency switching method of medium-wave antenna allotting network above-mentioned, wherein first capacitor is 136PF, the second capacitor is
118PF, third capacitor are 658PF, the 4th capacitor is 191PF, the 5th capacitor is 1443PF, the 6th capacitor is 3000PF, the 7th
Capacitor is 1000PF, the first inductance is 18.5 μ H, the second inductance is 38 μ H, third inductance is 7.49 μ H, the 4th inductance is 37.6 μ
H。
The frequency switching method of medium-wave antenna allotting network above-mentioned, wherein working in 1170KHz frequency in medium wave transmitter
When rate, antenna matching network passes through the first radio frequency converting switch of control, third radio frequency converting switch and the 4th radio frequency converting switch
It is in an off state, the second radio frequency converting switch is in closed state, realizes matching；1098KHz is worked in medium wave transmitter
When frequency, antenna matching network is opened by the first radio frequency converting switch of control, third radio frequency converting switch and the switching of the 4th radio frequency
It closes and is in closed state, the second radio frequency converting switch is in an off state, and realizes matching.
The present invention has obvious advantages and beneficial effects compared with the existing technology.By above-mentioned technical proposal, the present invention
A kind of frequency switching method of medium-wave antenna allotting network at least has following advantages and the utility model has the advantages that the present invention has broken tradition
Medium wave transmitting system change the theory of frequency, the antenna matching network for solving medium wave transmitter changes that frequency is difficult to ask in a short time
Topic, realizes in transmitter frequency conversion, for the quick automatic switching of antenna matching network different required for different frequency.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects, features and advantages of the invention can
It is clearer and more comprehensible, it is special below to lift preferred embodiment, and cooperate attached drawing, detailed description are as follows.
Detailed description of the invention
Fig. 1 is the antenna tune that a preferred embodiment of the present invention realizes double frequency switching in the antenna matching network of medium wave transmitter
The schematic diagram of distribution network.
Specific embodiment
It is of the invention to reach the technical means and efficacy that predetermined goal of the invention is taken further to illustrate, below in conjunction with
Attached drawing and preferred embodiment, to a kind of its specific reality of the frequency switching method of medium-wave antenna allotting network proposed according to the present invention
Mode, structure, feature and its effect are applied, detailed description is as follows.
The frequency switching method of medium-wave antenna allotting network of the invention is for day different required for different frequency
Line allotting network is adjusted the capacitor of antenna matching network and inductance parameters by way of switching, to reach
The purpose that antenna matching network is switched fast.Itself specifically includes the following steps: being constituted with capacitor, inductance and radio frequency converting switch in
The antenna matching network of wave transmitter；And the on-off by controlling radio frequency converting switch, to meeting not in antenna matching network
Capacitor and inductance parameters required for same frequency are chosen, to realize antenna matching network to quick of different frequency
Match.
Due to antenna matching network switching switch, need work between the allotment under the very strong launching tower of electromagnetic field in,
If controlled using low-voltage, switching switch may can cause to malfunction under magnetic field environment due to High-frequency Interference, through discussing
We finally use the on-off of 220V exchange remote power feeding control radio frequency converting switch after card.In order to avoid interference, radio frequency switching
The control of switch and sample line are all made of double shield high frequency cable, while also installing shielding dress additional in the periphery of radio frequency converting switch
It sets, to efficiently solve interference problem of the radio frequency converting switch under high-intensity magnetic field, is switched caused by avoiding because of high-frequency induction
The appearance of the phenomenon that malfunction ensure that the safe and reliable of switch motion.
The frequency switching method of medium-wave antenna allotting network of the invention can complete antenna tune when changing frequency in 3 seconds
The automatic switchover of distribution network.
Refering to Figure 1, being antenna matching network realization double frequency of a preferred embodiment of the present invention in medium wave transmitter
The schematic diagram of the antenna matching network of switching.Wherein, realize double frequency switching antenna matching network mainly by first capacitor C1-1,
Second capacitor C2, third capacitor C3, the 4th capacitor C4, the 5th capacitor C5, the 6th capacitor C6, the 7th capacitor C1-2, the first inductance
L1, the second inductance L2, third inductance L3, the 4th inductance L4, the first radio frequency converting switch K1, the second radio frequency converting switch K2,
Three radio frequency converting switch K3 and the 4th radio frequency converting switch K4 composition.Wherein, the first radio frequency converting switch K1 and first capacitor C1-
The first parallel circuit of formation in parallel with the first inductance L1 and the 7th capacitor C1-2 after 1 series connection, the second radio frequency converting switch K2 and the
The second parallel circuit of formation in parallel with the second inductance L2, third radio frequency converting switch K3 and third capacitor C3 after two capacitor C2 series connection
After series connection with third inductance in parallel L3 formed third parallel circuit, the 4th radio frequency converting switch K4 connect with the 4th capacitor C4 after and
5th capacitor C5 parallel connection forms the 4th parallel circuit, and the 4th inductance L4 forms the first series circuit after connecting with the 6th capacitor C6；
Wherein the first parallel circuit is connected between the first tie point A and the second parallel circuit, and the second parallel circuit is connected to first simultaneously
Join between circuit and grounding point, third parallel circuit is connected between power supply (B) and the first tie point A, the 4th parallel circuit and
First series circuit is connected between power supply (B, C) and grounding point.The above is only the present invention to realize antenna matching network switching
One specific embodiment, the frequency switching method of medium-wave antenna allotting network of the invention also may be implemented three frequency, or more frequency
Switching.
Wherein, first capacitor C1-1 is 136PF, the second capacitor C2 is 118PF, third capacitor C3 is 658PF, the 4th capacitor
C4 is 191PF, the 5th capacitor C5 is 1443PF, the 6th capacitor C6 is 3000PF, the 7th capacitor C1-2 is 1000PF, the first inductance
L1 is 18.5 μ H, the second inductance L2 is 38 μ H, third inductance L3 is 7.49 μ H, the 4th inductance L4 is 37.6 μ H.Fig. 1 is only to realize
Double frequency switching antenna matching network a specific embodiment, the present invention realize double frequency switching can also be used capacitor, inductance and
The other types of attachment for switching switch select the capacitor of other numerical value, inductance to constitute antenna matching network.
As shown in Figure 1, antenna matching network is penetrated by control first when medium wave transmitter works in 1170KHz frequency
Frequency switching switch K1, third radio frequency converting switch K3 and the 4th radio frequency converting switch K4 are in an off state, the switching of the second radio frequency
Switch K2 is in closed state, realizes matching；When medium wave transmitter works in 1098KHz frequency, antenna matching network passes through
It controls the first radio frequency converting switch K1, third radio frequency converting switch K3 and the 4th radio frequency converting switch K4 and is in closed state, the
Two radio frequency converting switch K2 are in an off state, and realize matching.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, though
So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this profession
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification
It is right according to the technical essence of the invention for the equivalent embodiment of equivalent variations, but without departing from the technical solutions of the present invention
Any simple modification, equivalent change and modification made by above embodiments, all of which are still within the scope of the technical scheme of the invention.
Claims (7)
1. a kind of frequency switching method of medium-wave antenna allotting network, it is characterised in that it is the following steps are included: with capacitor, inductance
The antenna matching network of medium wave transmitter is constituted with radio frequency converting switch；And
By controlling the on-off of radio frequency converting switch, to meeting capacitor and inductance required for different frequency in antenna matching network
Parameter is chosen, to realize antenna matching network to the Rapid matching of different frequency；
The antenna matching network for realizing double frequency switching includes: first capacitor, the second capacitor, third capacitor, the 4th capacitor, the 5th electricity
Appearance, the 6th capacitor, the 7th capacitor, the first inductance, the second inductance, third inductance, the 4th inductance, the first radio frequency converting switch,
Two radio frequency converting switchs, third radio frequency converting switch and the 4th radio frequency converting switch；Wherein, the first radio frequency converting switch and first
The first parallel circuit of formation in parallel with the first inductance and the 7th capacitor, the second radio frequency converting switch and the second capacitor after capacitor series connection
The second parallel circuit is formed after series connection with the second inductance in parallel, third radio frequency converting switch is electric with third after connecting with third capacitor
Sense is in parallel to form third parallel circuit, and the 4th radio frequency converting switch is in parallel with the 5th capacitor after connecting with the 4th capacitor to form the 4th
Parallel circuit, the 4th inductance form the first series circuit after connecting with the 6th capacitor；Wherein the first parallel circuit is connected to first
Between tie point and the second parallel circuit, the second parallel circuit is connected between the first parallel circuit and grounding point, and third is in parallel
Circuit connection between power supply and the first tie point, the 4th parallel circuit and the first series circuit be connected to power supply and grounding point it
Between.
2. the frequency switching method of medium-wave antenna allotting network according to claim 1, it is characterised in that wherein radio frequency is cut
Change switch on-off be using 220V exchange remote power feeding control.
3. the frequency switching method of medium-wave antenna allotting network according to claim 1, it is characterised in that wherein in radio frequency
The periphery of switching switch adds screening arrangement.
4. the frequency switching method of medium-wave antenna allotting network according to claim 1, it is characterised in that wherein to radio frequency
The control and sample line for switching switch are all made of double shield high frequency cable.
5. the frequency switching method of medium-wave antenna allotting network according to claim 1, it is characterised in that wherein changing frequency
When, antenna matching network completes switching in 3 seconds.
6. the frequency switching method of medium-wave antenna allotting network according to claim 1, it is characterised in that wherein the first electricity
Appearance is 136PF, the second capacitor is 118PF, third capacitor is 658PF, the 4th capacitor is 191PF, the 5th capacitor is 1443PF, the
Six capacitors are 3000PF, the 7th capacitor is 1000PF, the first inductance is 18.5 μ H, the second inductance is 38 μ H, third inductance is
7.49 μ H, the 4th inductance are 37.6 μ H.
7. the frequency switching method of medium-wave antenna allotting network according to claim 6, it is characterised in that wherein in medium wave
When transmitter works in 1170KHz frequency, antenna matching network is opened by the first radio frequency converting switch of control, the switching of third radio frequency
It closes and the 4th radio frequency converting switch is in an off state, the second radio frequency converting switch is in closed state, realizes matching；In medium wave
When transmitter works in 1098KHz frequency, antenna matching network is opened by the first radio frequency converting switch of control, the switching of third radio frequency
It closes and the 4th radio frequency converting switch is in closed state, the second radio frequency converting switch is in an off state, and realizes matching.
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 |
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| 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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| Publication Number | Publication Date |
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| CN106329132A CN106329132A (en) | 2017-01-11 |
| CN106329132B true CN106329132B (en) | 2019-06-18 |
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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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| CN106329132A (en) | 2017-01-11 |
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