CN106961842B - A kind of method of composite signal list cable transmission - Google Patents
A kind of method of composite signal list cable transmissionInfo
- Publication number
- CN106961842B CN106961842B CN200910026177.8A CN200910026177A CN106961842B CN 106961842 B CN106961842 B CN 106961842B CN 200910026177 A CN200910026177 A CN 200910026177A CN 106961842 B CN106961842 B CN 106961842B
- Authority
- CN
- China
- Prior art keywords
- pass filter
- signal
- control signal
- transceiver
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 17
- 239000002131 composite material Substances 0.000 title claims abstract description 16
- 230000000875 corresponding Effects 0.000 claims abstract description 7
- 150000001875 compounds Chemical group 0.000 claims 1
- 238000005516 engineering process Methods 0.000 description 2
- 230000001808 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
Abstract
A kind of method of composite signal list cable transmission, it is multiplexed in transceiver by DC filter, high-pass filter, low pass filter three, DC voltage in transceiver is entered into low pass filter by DC filter together with the control signal by capacitance, DC voltage is combined with each other with control signal after low pass filter, composite signal is then constituted together with the radiofrequency signal by high-pass filter, the output of last high-pass filter is transmitted to antenna tuner by a radio-frequency cable；Antenna tuner is received after composite signal, radiofrequency signal is filtered out by high-pass filter to deliver to corresponding high-frequency circuit, DC voltage is filtered out with control signal by low pass filter simultaneously, then DC voltage and control signal will be supplied separately to by corresponding low-frequency channel by capacitance and DC filter respectively；Wherein control signal and radiofrequency signal are two-way.
Description
Technical field
The present invention relates to a kind of method that achievable composite signal is transmitted by single radio-frequency coaxial cable.It is especially short
The method for the single radio-frequency coaxial cable transmission that communications apparatus is used.
Background technology
At present in short wave communication equipment, the connection of transceiver and external antenna tuner mainly have radiofrequency signal,
Control signal and DC power signal, wherein radiofrequency signal are transmitted by radio frequency coaxial-cable, and control signal is with data
Form is transmitted by low-frequency cable, and direct current signal is directly connected by low-frequency cable.There is following ask in such a connection method
Topic：
It is that connection cable is more first, uses and set up difficulty；Next to that directly being connected by wire cable, especially
Transmission range is limited when control data signal and d. c. voltage signal are connected by low-frequency cable, and easily by radio frequency
The interference of signal, causes control mistake.The method that there are no transceiver list cable transmission signal at present.
The content of the invention
The present invention seeks to：A kind of method of composite signal list cable transmission is proposed, transceiver and external antenna are adjusted
Long-distance transmissions can be achieved between humorous device.And communication equipment sets up convenient；The laying and connection of cable are simple, and electromagnetism
It is compatible functional.
The technical scheme is that：A kind of method of composite signal list cable transmission, passes through direct current in transceiver
Wave filter, high-pass filter, low pass filter three multiplexing, DC filtering is passed through by the DC voltage in transceiver
Device enters low pass filter, the DC voltage after low pass filter together with the control signal by capacitance C7
It is combined with each other with control signal, composite signal is then constituted together with the radiofrequency signal by high-pass filter, finally
Antenna tuner is transmitted to by a radio-frequency cable；
Antenna tuner is received after composite signal, filters out radiofrequency signal by high-pass filter to deliver to corresponding high-frequency electrical
Road, while DC voltage is filtered out with control signal by low pass filter, then by respectively by capacitance and
DC voltage and control signal are supplied separately to corresponding low-frequency channel by DC filter, and direct current is prevented provided with capacitance
Voltage scurries into control signal circuit.Wherein control signal and radiofrequency signal are two-way, you can with from transceiver to day
Adjust, transceiver can also be adjusted to from day；By radiofrequency signal, control signal and DC power signal coupling simple radio frequency
Coaxial cable, long-distance transmissions are realized by radio-frequency cable, will using high-pass filter and low pass filter in day tune
Corresponding signal is separated.The present invention is especially adapted for use in short wave communication equipment, and short wave communication equipment uses the method
Radio frequency, direct current, the long-distance transmissions of control signal can be realized by single radio-frequency coaxial cable, it is logical by greatly facilitating
Believe the erection of equipment and use, improve the tactics technology and performance of shortwave ultrashort wave radio set.
Using the method have the advantages that：Realized between transceiver and external antenna tuner single
Cable transmission；Coaxial cable losses are small, and long-distance transmissions can be achieved.Transceiver is connected and external using unit cable
The maximum benefit of formula antenna tuner is that equipment is set up conveniently, and especially filling communication truck, dress in short wave communication equipment flies
Particularly convenient during machine, the laying and connection of cable are simple, and distance can be adjusted arbitrarily, and Electro Magnetic Compatibility is good.
The inventive method has the beneficial effect that：
A. long-distance transmissions can be achieved between transceiver and external antenna tuner.
B. communication equipment sets up convenient.
C. the laying and connection of cable are simple, and Electro Magnetic Compatibility is good.
Using the short wave communication equipment of the present invention after user's use, the problem of equipment erection is solved, is substantially reduced
The time that communication equipment is opened, it is ensured that the communication efficiency in radio station, with good performance, the reflection of user is good
It is good.
Brief description of the drawings
Fig. 1 is that the inventive method realizes circuit diagram
Embodiment
From Fig. 1 see in transceiver the partial circuit by three wave filter groups into, the DC filter that is made up of L1,
By L2~L4, the C1 low pass filter constituted and by C2, C3, the high-pass filter of L5 compositions；Antenna tuner
Inside similarly be made up of high-pass filter, low pass filter and the part of DC filter three, C7, C8 respectively as
Capacitance prevents that DC voltage from scurrying into control signal circuit.
DC voltage first in transceiver is by DC filter together with the control signal by capacitance C7
Into low pass filter, DC voltage is combined with each other with control signal after low pass filter, then with passing through height
The radiofrequency signal of bandpass filter constitutes composite signal together, and antenna tuning is transmitted to finally by a radio-frequency cable
Device；Antenna tuner is received after composite signal, filters out radiofrequency signal by high-pass filter to deliver to related circuit,
DC voltage is filtered out with control signal by low pass filter simultaneously, then by respectively by capacitance C8 and
DC voltage and control signal are supplied separately to related circuit by DC filter.Wherein control signal is with radiofrequency signal
Two-way, you can be adjusted from transceiver to day, transceiver can also be adjusted to from day, and DC voltage is believed by transmitting-receiving
Machine is supplied to day to adjust.The circuit that the method for the present invention is implemented is as shown in Figure 1.The method of the present invention has been applied to
In the serial short-wave radio sets of 2-30MHz 20W, 125W, 400W, 1000W.
Claims (2)
1. a kind of method of composite signal list cable transmission, it is characterized in that in transceiver by DC filter,
High-pass filter, low pass filter three multiplexing, by the DC voltage in transceiver by DC filter with passing through
The control signal of capacitance enters low pass filter together, and DC voltage is answered with control signal after low pass filter
It is combined, composite signal is then constituted together with the radiofrequency signal by high-pass filter, finally by a radio frequency
Cable is by the compound signal transmission to antenna tuner；
Antenna tuner is received after composite signal, filters out radiofrequency signal by high-pass filter to deliver to corresponding high-frequency electrical
Road, while DC voltage is filtered out with control signal by low pass filter, then by respectively by capacitance and
DC voltage and control signal are supplied separately to corresponding low-frequency channel by DC filter；Wherein control signal is believed with radio frequency
Number it is two-way, can be adjusted from transceiver to day, also can be adjusted to transceiver from day；Set in control signal circuit
There is capacitance.
2. the method for composite signal list cable transmission according to claim 1, it is characterized in that suitable for short-pass
Believe equipment, short wave communication equipment is connected between short-wave transceiver and external antenna tuner using single radio-frequency cable
Connect.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106961842B true CN106961842B (en) | 2013-05-08 |
Family
ID=
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107919883A (en) * | 2017-11-13 | 2018-04-17 | 青岛海信移动通信技术股份有限公司 | A kind of antenna assembly and mobile unit applied to mobile unit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107919883A (en) * | 2017-11-13 | 2018-04-17 | 青岛海信移动通信技术股份有限公司 | A kind of antenna assembly and mobile unit applied to mobile unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR03 | Grant of secret patent right | ||
| DC01 | Secret patent status has been lifted |