CN210225415U - Transceiving channel switching device - Google Patents
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- CN210225415U CN210225415U CN201921559052.7U CN201921559052U CN210225415U CN 210225415 U CN210225415 U CN 210225415U CN 201921559052 U CN201921559052 U CN 201921559052U CN 210225415 U CN210225415 U CN 210225415U
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- 238000001514 detection method Methods 0.000 abstract description 2
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- 238000001914 filtration Methods 0.000 description 8
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Abstract
The utility model discloses a send out and send out lane conversion equipment, include: the radio frequency power relay comprises a shielding shell, a radio frequency power relay and a receiving and transmitting channel switching board. The shielding shell is provided with four interfaces which are respectively a radio station interface, a sky tone/antenna interface, a receiving port and a control port; the radio frequency power relay is arranged in the shielding shell and comprises a transmitting end, a public end, a control end and a receiving end; and the receiving and transmitting channel switching board is arranged in the shielding shell, is internally provided with a filter, and is provided with four interfaces, namely a radio station interface, a natural frequency modulation/antenna interface, a relay station interface and a relay common terminal. The utility model provides an in short wave communication process, the collection of mail, the usable problem of only an antenna of letter of posting a letter, realized the function of detection frequency, business communication receiving and dispatching antenna sharing.
Description
Technical Field
The utility model relates to a receive and dispatch and say conversion equipment.
Background
In the process of rapid development of the current scientific technology in China, the development in the communication field is also greatly improved, and short-wave communication is applied in numerous fields. However, in the short-wave communication process, the problems of difficult frequency selection and difficult frequency use exist. In order to solve the frequency selection problem, frequency selection equipment such as an autonomous frequency selection controller needs to be adapted. Under the communication condition, the problem that only one antenna is available for receiving and transmitting exists, and the use condition of frequency selection equipment such as an autonomous frequency selection controller cannot be met. In order to solve the above problems, a channel switching device needs to be designed to achieve the goal that two devices, namely a short-wave radio station and an autonomous frequency selection controller, share one antenna for use in the short-wave communication process.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving in the short wave communication process, the collection of mail, the problem that only an antenna is available of posting a letter, realized the function of detection frequency, business communication receiving and dispatching antenna sharing.
Realize the utility model discloses the technical scheme of purpose is:
a channel switching apparatus, comprising:
a shield case; four interfaces are arranged on the antenna, and are respectively a radio station interface, an antenna modulation/antenna interface, a receiving port and a control port;
the radio frequency power relay is arranged in the shielding shell and comprises a transmitting end, a public end, a control end and a receiving end, and the control end and the receiving end are respectively connected with a control port and a receiving port of the shielding shell;
and the receiving and transmitting channel switching board is arranged in the shielding shell, is internally provided with a filter, is provided with four interfaces, and is respectively a radio interface and an antenna interface which are connected with the radio interface and the antenna interface on the shielding shell, and a relay station port and a relay common end which are connected with a transmitting end and a common end of the radio frequency power relay.
Furthermore, in the receiving and transmitting channel switching board, a high-frequency filter is arranged between the radio station interface and the relay station interface; a low-frequency/direct-current filter is arranged between the radio station interface and the antenna modulation/antenna interface; and a DC blocking circuit is arranged between the antenna adjusting/antenna interface and the common end of the relay.
Further, the high frequency filter includes three capacitors E1, E2, and E3 and one inductor L1; the capacitor E1 and the capacitor E2 are connected in series between the station interface and the relay station interface; one end of the inductor L1 is in junction with one ends of the capacitor E1 and the capacitor E2, and the other end of the inductor L1 is grounded; one end of the capacitor E3 is connected with one end of the capacitor E1 and one end of the capacitor E2 in a junction mode, and the other end of the capacitor E3 is grounded.
Further, the low frequency/direct current filter comprises three inductors L2, L3 and L4 and a capacitor E4; wherein the inductor L2 and the inductor L3 are connected in series between the radio interface and the antenna modulation/antenna interface; one end of the inductor L4 is connected with one end of the inductor L2 and one end of the inductor L3 in a junction mode, and the other end of the inductor L4 is connected with one end of the capacitor E4; the other end of the capacitor E4 is grounded.
Further, the dc blocking circuit is a capacitor C1 disposed between the antenna/antenna interface and the common terminal of the relay.
Furthermore, the capacitor C1 is packaged by 1210V, and the withstand voltage value is more than 30V.
Furthermore, four interfaces of the transceiving channel switching board are all packaged by SMB.
By adopting the technical scheme, the utility model discloses following beneficial effect has:
(1) the utility model discloses equipment such as cooperation autonomous frequency selection controller uses, can solve in short wave communication process, and only the problem that an antenna is available has realized the function of detecting frequency, business communication sharing receiving and dispatching antenna. When the system transmits signals, the radio frequency signal path of the radio station, the antenna and the antenna is adopted, so that the normal radio frequency signal transmitting function of the original radio station is not influenced; when the system receives signals, a radio frequency signal channel of the antenna, the antenna tone and the autonomous frequency selection controller is adopted, radio frequency signal separation is realized, the function that the antenna tone is used by a radio station in a remote control mode is not influenced, and finally the radio station and the autonomous frequency selection controller share the aim of one set of antenna feed system (the antenna tone and the antenna link are collectively called) by two short-wave communication equipment.
(2) The utility model discloses a receiving and dispatching channel switching board has the function of decomposing the three-in-one signal in radio station. In traditional radio station equipment, a three-wire-in-one antenna modulation remote control technology is adopted, 24V direct current power supply signals of an antenna modulation, low-frequency antenna modulation remote control signals and high-frequency short-wave radio frequency signals are connected by radio frequency feeder lines in a unified mode, and the function that one feeder line transmits three signals simultaneously is achieved. The utility model discloses a receiving and dispatching channel switching board realizes radio frequency signal's independent filtering separation function through decomposing the three-wire signal function of unifying of radio station, under the condition that does not change communication flow, separates out radio frequency signal and supplies independently frequency selection equipment to use.
(3) The utility model discloses the high frequency filter of well receiving and dispatching channel switching board can effectively realize low frequency 9kHz, 100kHz and DC power supply signal's filtration, guarantees high frequency radio frequency signal's the biography simultaneously, has realized three-way unification radio frequency signal screening function, has still restrained low frequency day and has transferred remote control signal and DC power supply to the interference of radio frequency signal route.
(4) The utility model discloses the low frequency/direct current filter of well receiving and dispatching channel switching board can effectively realize the filtration of high frequency shortwave radio frequency signal, guarantees simultaneously that the low frequency sky transfers remote control signal and direct current power supply signal's transmission thoroughly, has realized three-way remote control signal, direct current power supply screening function of unification, has restrained high frequency radio frequency signal simultaneously to the interference of power, remote control route.
(5) The utility model discloses well receiving and dispatching channel switching board separate direct current circuit and can overcome high low frequency pulsation's interference, guarantee absolute independence between signal, power, the ground after the transform.
(6) Because the capacitor C1 is packaged by 1210V, the withstand voltage value is more than 30V, and the risk that the capacitor can be broken down and exploded is reduced.
Drawings
In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is given in conjunction with the accompanying drawings, in which
Fig. 1 is a system connection block diagram of the present invention.
Fig. 2 is a schematic block diagram of the present invention.
Fig. 3 is a schematic diagram of the flow direction of the transmission signal of the present invention.
Fig. 4 is a schematic diagram of the flow of the received signal according to the present invention.
Fig. 5 is an internal composition structure diagram of the transceiving channel switching board of the present invention.
Fig. 6 is a schematic circuit diagram of the transceiver channel switching board of the present invention.
Fig. 7 is a simulation effect diagram of the high-frequency filter of the present invention.
Fig. 8 is a diagram illustrating the simulation effect of the low frequency/dc filter of the present invention.
Detailed Description
(example 1)
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The specific implementation mode is as follows:
the utility model discloses a system connection block diagram is shown in fig. 1, does in the broken line frame the utility model discloses a receiving and dispatching way conversion equipment has shown its and short wave radio station, antenna day in the picture and has independently selected the relation of connection between the frequency controller.
Referring to fig. 2, the transceiver channel switching device of the present embodiment includes a shielding case, a radio frequency power relay, and a transceiver channel switching board.
Four interfaces are arranged on the shielding shell, namely a radio station interface, a sky tone/antenna interface, a receiving port and a control port.
The radio frequency power relay is arranged in the shielding shell and comprises a transmitting end, a public end, a control end and a receiving end, wherein the receiving end is connected with a short wave antenna receiving interface of equipment such as an autonomous frequency selection controller and short wave frequency tube equipment through a radio frequency connecting cable; the control port is connected with the antenna switching control port of the equipment such as the autonomous frequency-selecting controller, the short wave frequency tube equipment and the like through a communication cable. The radio frequency power relay adopts the control mode of the electromagnet, so that the physical isolation effect of the radio frequency signal switching is realized, the 80dB channel signal isolation degree can be realized under the condition that the input signal is less than 300W, and the possibility of leakage interference of the radio frequency signal is ensured.
The receiving and transmitting channel switching board is arranged in the shielding shell, a filter is arranged in the shielding shell, four interfaces are arranged on the receiving and transmitting channel switching board and are respectively a radio station interface, a sky tone/antenna interface, a relay station interface and a relay public end, and the four interfaces are all packaged by SMB. The radio station interface and the antenna modulation/antenna interface are respectively connected with the radio station interface and the antenna modulation/antenna interface on the shielding shell through radio frequency cables, and the relay station port and the common end of the relay are connected with the transmitting end and the common end of the radio frequency power relay. The receiving and transmitting channel switching board has the function of decomposing three-in-one signals of the radio station. In traditional radio station equipment, a three-wire-in-one antenna modulation remote control technology is adopted, 24V direct current power supply signals of an antenna modulation, low-frequency antenna modulation remote control signals and high-frequency short-wave radio frequency signals are connected by radio frequency feeder lines in a unified mode, and the function that one feeder line transmits three signals simultaneously is achieved. The receiving and transmitting channel switching board realizes the independent filtering and separating function of the radio frequency signals by decomposing the three-in-one signal function of the radio station, and separates the radio frequency signals for the autonomous frequency selection equipment to use under the condition of not changing the communication flow.
Referring to fig. 5 and 6, in the transceiving channel switching board, a high frequency filter is disposed between the station interface and the relay station interface for isolating a direct current 24V input power and a low frequency remote control signal, and referring to fig. 6, the high frequency filter includes three capacitors E1(3300pF), E2(6800pF), E3(10pF) and an inductor L1(8.2 uH); the capacitors E1 and E2 are connected in series between the station interface and the relay station interface; one end of the inductor L1 is connected with one ends of the capacitors E1 and E2 in a junction mode, and the other end of the inductor L1 is grounded; one end of the capacitor E3 is connected to one end of the capacitors E1 and E2, and the other end is grounded. The high-frequency filter can effectively realize the filtering of low-frequency 9kHz, 100kHz and direct-current power supply signals, simultaneously ensures the transparent transmission of high-frequency radio-frequency signals, and realizes the three-wire-in-one radio-frequency signal screening function.
In the receiving and dispatching channel switching board, a low-frequency/direct-current filter is arranged between a radio interface and an antenna interface and used for transmitting a low-frequency remote control signal and a 24V direct-current power supply supplied by the antenna, so that the filtering of a high-frequency short-wave radio-frequency signal can be effectively realized, the transmission of the low-frequency remote control signal and a direct-current power supply signal is ensured, and the three-in-one remote control signal and direct-current power supply screening function is realized. The low-frequency/direct-current filter comprises three inductors L2(20uH), L3(40uH), L4(680nH) and a capacitor E4(0.015 uF); the inductors L2 and L3 are connected in series between the radio station interface and the antenna modulation/antenna interface; one end of the inductor L4 is connected with one end of the inductors L2 and L3 in a junction mode, and the other end of the inductor L4 is connected with one end of the capacitor E4; the other terminal of the capacitor E4 is connected to ground.
In the transmitting-receiving channel switching board, a direct current blocking circuit capacitor C1(1uF) is arranged between an antenna modulation/antenna interface and the common end of the relay, a capacitor C1 is packaged by 1210, and the withstand voltage value is larger than 30V.
Specifically, referring to fig. 7, the filtering effect of the high frequency filter is as follows:
at frequencies where the low frequency control signal m1 is 100kHz and m3 is 9.001kHz, signal attenuations of 46dB and 109dB are achieved, respectively; the direct current power supply signals are physically isolated; the insertion loss is < 0.1dB at frequencies above 1.6MHz for useful high frequency signals m 2. And meets the design target of the switching board of the receiving and transmitting channel.
Specifically, referring to fig. 8, the effect of the low frequency/dc filter is as follows:
in the frequency range of 1.6 MHz-30 MHz of the short wave frequency band, the isolation can be larger than-67 dB, and simultaneously, in the frequency range of the low frequency remote control signal, the insertion loss is smaller than 0.2 dBm. And meets the design target of the switching board of the receiving and transmitting channel.
Referring to fig. 3, when the system transmits signals, the short wave radio station outputs signals to the radio station interface of the transmit-receive channel switching board through the radio station interface of the shielding shell, and then the radio station interface of the transmit-receive channel switching board transmits power supply and low-frequency remote control signals (9kHz and 100kHz signals) of the antenna tone to the antenna tone/antenna interface of the transmit-receive channel switching board; meanwhile, radio frequency signals are transmitted to a relay station port of the receiving and transmitting channel switching board through a station interface of the receiving and transmitting channel switching board and then transmitted to a transmitting end of a radio frequency power relay through a relay station port of the receiving and transmitting channel switching board, the radio frequency signals obtained through filtering are connected to a public end through the transmitting end of the radio frequency power relay, then transmitted to a relay public end of the receiving and transmitting channel switching board through the public end of the radio frequency power relay, transmitted to an antenna interface/antenna interface of the receiving and transmitting channel switching board through the relay public end of the receiving and transmitting channel switching board, finally output signals to an antenna interface/antenna interface of a shielding shell in a unified mode, and transmitted to an external antenna interface and an antenna to complete a normal signal transmitting process of the radio station. In the transmitting process, a high-energy radio frequency transmitting signal is isolated from a receiving end by a radio frequency power relay, so that the use of the autonomous frequency selection controller is protected, and the switching function of the transmitting signal is completed. The dashed lines indicate that there is a physical connection, but no signal passes through at this stage.
Referring to fig. 4, when the receiving device receives signals, the received signals are output to the antenna interface/antenna interface of the transmitting/receiving channel switch board by the antenna interface/antenna interface of the shielding shell, then the radio frequency signals are transmitted to the relay common end of the transmitting/receiving channel switch board by the antenna interface/antenna interface of the transmitting/receiving channel switch board, the power supply and the remote control signal transmission from the radio interface to the antenna interface/antenna interface are kept, then the radio frequency signals are transmitted to the common end of the radio frequency power relay by the relay common end of the transmitting/receiving channel switch board, the filtered radio frequency signals are connected to the receiving end by the common end of the radio frequency power relay, finally the receiving end of the radio frequency power relay outputs signals to the receiving port of the shielding shell, the shortwave radio frequency receiving signals are switched to the receiving port, and finally the shortwave radio frequency receiving signals are transmitted to the autonomous frequency selection, and completing the normal signal receiving process of the receiving equipment, thereby realizing the function of receiving and switching. The dashed lines indicate that there is a physical connection, but no signal passes through at this stage.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. A channel switching apparatus, comprising:
a shield case; four interfaces are arranged on the antenna, and are respectively a radio station interface, an antenna modulation/antenna interface, a receiving port and a control port;
the radio frequency power relay is arranged in the shielding shell and comprises a transmitting end, a public end, a control end and a receiving end, and the control end and the receiving end are respectively connected with a control port and a receiving port of the shielding shell;
and the receiving and transmitting channel switching board is arranged in the shielding shell, is internally provided with a filter, is provided with four interfaces, and is respectively a radio interface and an antenna interface which are connected with the radio interface and the antenna interface on the shielding shell, and a relay station port and a relay common end which are connected with a transmitting end and a common end of the radio frequency power relay.
2. A transceiver channel switching apparatus according to claim 1, wherein:
in the receiving and transmitting channel switching board, a high-frequency filter is arranged between the radio station interface and the relay station interface;
a low-frequency/direct-current filter is arranged between the radio station interface and the antenna modulation/antenna interface;
and a DC blocking circuit is arranged between the antenna adjusting/antenna interface and the common end of the relay.
3. A transceiver channel switching apparatus according to claim 2, wherein:
the high-frequency filter comprises three capacitors E1, E2 and E3 and an inductor L1;
wherein,
the capacitor E1 and the capacitor E2 are connected in series between the station interface and the relay station interface;
one end of the inductor L1 is in junction with one ends of the capacitor E1 and the capacitor E2, and the other end of the inductor L1 is grounded;
one end of the capacitor E3 is connected with one end of the capacitor E1 and one end of the capacitor E2 in a junction mode, and the other end of the capacitor E3 is grounded.
4. A transceiver channel switching apparatus according to claim 2, wherein:
the low frequency/direct current filter comprises three inductors L2, L3 and L4 and a capacitor E4;
wherein,
the inductor L2 and the inductor L3 are connected in series between the radio interface and the antenna modulation/antenna interface;
one end of the inductor L4 is connected with one end of the inductor L2 and one end of the inductor L3 in a junction mode, and the other end of the inductor L4 is connected with one end of the capacitor E4;
the other end of the capacitor E4 is grounded.
5. A transceiver channel switching apparatus according to claim 2, wherein:
the DC blocking circuit is a capacitor C1 arranged between the antenna adjusting/antenna interface and the common end of the relay.
6. A transceiver channel switching apparatus according to claim 5, wherein:
the capacitor C1 is packaged by 1210V, and the withstand voltage value is more than 30V.
7. A transceiver channel switching apparatus according to any one of claims 1 to 6, wherein:
and four interfaces of the receiving and transmitting channel switching board are encapsulated by SMB.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921559052.7U CN210225415U (en) | 2019-09-19 | 2019-09-19 | Transceiving channel switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921559052.7U CN210225415U (en) | 2019-09-19 | 2019-09-19 | Transceiving channel switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210225415U true CN210225415U (en) | 2020-03-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921559052.7U Active CN210225415U (en) | 2019-09-19 | 2019-09-19 | Transceiving channel switching device |
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| Country | Link |
|---|---|
| CN (1) | CN210225415U (en) |
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2019
- 2019-09-19 CN CN201921559052.7U patent/CN210225415U/en active Active
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