CN203984418U - A kind of shortwave power amplifier - Google Patents
A kind of shortwave power amplifier Download PDFInfo
- Publication number
- CN203984418U CN203984418U CN201420096117.XU CN201420096117U CN203984418U CN 203984418 U CN203984418 U CN 203984418U CN 201420096117 U CN201420096117 U CN 201420096117U CN 203984418 U CN203984418 U CN 203984418U
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Abstract
The utility model discloses a kind of shortwave power amplifier, comprise Transmit enable circuit, Transmit enable circuit comprises the first relay and the 4th relay; The normally opened contact of the first relay is connected with the normally opened contact of the 4th relay, the normally-closed contact of the first relay is connected by the input matching circuit, power amplifier module, output circuit and the normally-closed contact of the 4th relay that connect successively, the 4th relay is also connected with antenna, and the feeder ear of the first relay is connected and ground connection with the feeder ear of the 4th relay; Power amplifier module is also connected with biasing circuit.This device is at the power of the exportable about 40W of 7MHz, and at the power of the exportable about 20W of 14MHz, the about 1Kg of weight left and right, is convenient for carrying, and coordinates transceiver to communicate in the radio station fast and outside several thousand kilometers, can be widely applied to the fields such as Emergency disaster cure communication.
Description
Technical field
The utility model belongs to New Technology Of Shortwave Communication field, is specifically related to a kind of shortwave power amplifier.
Background technology
Short wave communication is the one of radio communication.Wavelength is between 80 meters～10 meters.Emitting radio waves will could arrive receiving equipment through ionospheric reflection, and communication distance is far away, is the Main Means of telecommunication.Due to ionospheric height with the impact of the factor such as density is easily subject to round the clock, season, weather, so the less stable of short wave communication, noise is larger.At present, it is widely used in the aspects such as telegram, phone, low speed facsimile and broadcast.Although current novel radio electrical communication system continues to bring out, this ancient and traditional communication mode of shortwave is still subject to the whole world and generally payes attention to, and is not only eliminated, also in fast development.
The power output of short-wave transmitter is the key factor that determines communication distance and communication quality.Therefore, the transmitting power of long-range short-wave transceiver is often larger.Meanwhile, short wave communication equipment often needs certain portable performance.Thereby power is subject to certain restrictions again.
Utility model content
The purpose of this utility model is to provide a kind of shortwave power amplifier, to solve the power output and the portable problem that cannot be met of existing short wave communication simultaneously.
The technical scheme that the utility model adopts is, comprises Transmit enable circuit, and Transmit enable circuit comprises the first relay and the 4th relay; The normally opened contact of the first relay is connected with the normally opened contact of the 4th relay, the normally-closed contact of the first relay is connected by the input matching circuit, power amplifier module, output circuit and the normally-closed contact of the 4th relay that connect successively, the 4th relay is also connected with antenna, and the feeder ear of the first relay is connected and ground connection with the feeder ear of the 4th relay; Power amplifier module is also connected with biasing circuit.
Feature of the present utility model is also,
Power amplifier module comprises the first transformer, the second transformer, the first power tube and the second power tube; One end of the first transformer T primary coil is connected with input matching circuit, the other end ground connection of the first transformer, and the two ends of the first transformer secondary output coil are connected respectively to the grid of the second power tube and the grid of the first power tube; The drain electrode of the second power tube is connected with the grid of the second power tube with the 3rd resistance by the 3rd electric capacity, the source electrode of the second power tube is connected with the source electrode of the first power tube, and the drain electrode of the first power tube is connected with the grid of the first power tube with the 4th resistance by the 4th electric capacity; The grid of the grid of the first power tube and the second power tube is connected respectively to the two ends of the second transformer, and one end of the secondary coil of the second transformer is connected with output circuit, the other end ground connection of the secondary coil of the second transformer.
Biasing circuit comprises three-terminal voltage-stabilizing power regulator, the output of three-terminal voltage-stabilizing power regulator is all connected and ground connection with the source electrode of the second power tube and the source electrode of the first power tube by the second electric capacity, the output of three-terminal voltage-stabilizing power regulator is also connected with the tap of the first transformer secondary output coil, the input of three-terminal voltage-stabilizing power regulator is connected with the tap of the second transformer by the first inductance, and the input of three-terminal voltage-stabilizing power regulator is also by the 6th electric capacity, the 5th electric capacity and the 7th electric capacity ground connection being respectively set up in parallel.
Input matching circuit comprises the first resistance, the second resistance and the first electric capacity; Second resistance of the control end of the first relay by parallel connection and the first electric capacity are connected to one end of the first transformer, and the control end of the first relay is also by the first grounding through resistance.
Output circuit comprises the second relay, the 3rd relay, the first band pass filter and the second band pass filter; The input of the input of the first band pass filter and the second band pass filter is all connected with the second transformer secondary output coil by the second relay, and the output of the output of the first band pass filter and the second band pass filter is all connected to the 4th relay by the 3rd relay; The feeder ear of the 3rd relay is connected to the earth terminal of the second transformer secondary output coil by the feeder ear of the second relay.
The first band pass filter comprises the second inductance and the 3rd inductance that are connected successively with the second relay; The second inductance is distinguished ground connection near a side of the second relay by the 8th electric capacity and the 9th electric capacity that are set up in parallel, the second inductance is distinguished ground connection near a side of the 3rd electric capacity by the tenth electric capacity and the 11 electric capacity that are set up in parallel, and the 3rd inductance passes through the 12 capacity earth near a side of the 3rd relay; The enamelled wire that the second inductance and the 3rd inductance are 0.7mm even coiling 8 on nxo-10 is enclosed.
The second band pass filter comprises the 4th inductance and the 5th inductance that are connected successively with the second relay; The 4th inductance passes through the 14 capacity earth near a side of the second relay K, the 4th inductance is distinguished ground connection near a side of the 5th electric capacity by the 15 electric capacity and the 16 electric capacity that are set up in parallel, and the 5th inductance passes through the 17 capacity earth near a side of the 3rd relay; The enamelled wire that the 4th inductance and the 5th inductance are 0.7mm even coiling 12 on nxo-10 is enclosed.
The beneficial effects of the utility model are, this shortwave power amplifier is at the power of the exportable about 40W of 7MHz, at the power of the exportable about 20W of 14MHz, the about 1Kg of weight left and right, be convenient for carrying, coordinate transceiver to communicate in the radio station fast and outside several thousand kilometers, can be widely applied to the fields such as Emergency disaster cure communication.
Brief description of the drawings
Fig. 1 is the structural representation of a kind of shortwave power amplifier of the utility model;
Fig. 2 is the circuit connection diagram of a kind of shortwave power amplifier of the utility model.
In figure, 1. Transmit enable circuit, 2. input matching circuit, 3. biasing circuit, 4. power amplifier module, 5. output circuit, 6. antenna.
Embodiment
Below in conjunction with drawings and Examples, the utility model is elaborated.
The utility model provides a kind of shortwave power amplifier, referring to structure chart 1, comprises Transmit enable circuit 1, and Transmit enable circuit 1 comprises the first relay K 1 and the 4th relay K 4; The normally opened contact of the first relay K 1 is connected with the normally opened contact of the 4th relay K 4, the normally-closed contact of the first relay K 1 is connected by the input matching circuit 2, power amplifier module 4, output circuit 5 and the normally-closed contact of the 4th relay K 4 that connect successively, the feeder ear that the 4th relay K 4 is also connected with antenna 6, the first relay K 1 is connected and ground connection with the feeder ear of the 4th relay K 4; Power amplifier module 4 is also connected with biasing circuit 3.
Wherein, power amplifier module 4 comprises the first transformer T1, the second transformer T2, the first power tube Q1 and the second power tube Q2; One end of the first transformer T1 primary coil is connected with input matching circuit 2, the other end ground connection of the first transformer T1 primary coil, and the two ends of the first transformer T1 secondary coil are connected respectively to the grid of the second power tube Q2 and the grid of the first power tube Q1; The drain electrode of the second power tube Q2 is connected with the grid of the second power tube Q2 with the 3rd resistance R 3 by the 3rd capacitor C 3, the source electrode of the second power tube Q2 is connected with the source electrode of the first power tube Q1, and the drain electrode of the first power tube Q1 is connected with the grid of the first power tube Q1 with the 4th resistance R 4 by the 4th capacitor C 4; The grid of the grid of the first power tube Q1 and the second power tube Q2 is connected respectively to the two ends of the second transformer T2 primary coil, and one end of the secondary coil of the second transformer T2 is connected with the other end ground connection of the secondary coil of output circuit 5, the second transformer T2.
Biasing circuit 3 comprises three-terminal voltage-stabilizing power regulator, the output of three-terminal voltage-stabilizing power regulator is all connected and ground connection with the source electrode of the second power tube Q2 and the source electrode of the first power tube Q1 by the second capacitor C 2, the output of three-terminal voltage-stabilizing power regulator is also connected with the tap of the first transformer T1 secondary coil, the input of three-terminal voltage-stabilizing power regulator is connected with the tap of the second transformer T2 primary coil by the first inductance L 1, the input of three-terminal voltage-stabilizing power regulator is also by the 6th capacitor C 6 being set up in parallel, the 5th capacitor C 5 and the 7th capacitor C 7 ground connection respectively.
Input matching circuit 2 comprises the first resistance R 1, the second resistance R 2 and the first capacitor C 1; Second resistance R 2 of the control end of the first relay K 1 by parallel connection and the first capacitor C 1 are connected to one end of the first transformer T1 primary coil, and the control end of the first relay K 1 is also by the first resistance R 1 ground connection.
Output circuit 5 comprises the second relay K 2, the 3rd relay K 3, the first band pass filter and the second band pass filter; The input of the input of the first band pass filter and the second band pass filter is all connected with the second transformer T2 secondary coil by the second relay K 2, and the output of the output of the first band pass filter and the second band pass filter is all connected to the 4th relay K 4 by the 3rd relay K 3; The feeder ear of the 3rd relay K 3 is connected to the earth terminal of the second transformer T2 secondary coil by the feeder ear of the second relay K 2.
The first band pass filter comprises the second inductance L 2 and the 3rd inductance L 3 that are connected successively with the second relay K 2; The second inductance L 2 is distinguished ground connection near a side of the second relay K 2 by the 8th capacitor C 8 and the 9th capacitor C 9 that are set up in parallel, the second inductance L 2 is distinguished ground connection near a side of the 3rd electric capacity L3 by the tenth capacitor C the 10 and the 11 capacitor C 11 being set up in parallel, and the 3rd inductance L 3 is passed through the 12 capacitor C 12 ground connection near a side of the 3rd relay K 3; The enamelled wire that the second inductance L 2 and the 3rd inductance L 3 are 0.7mm even coiling 8 on nxo-10 is enclosed.
The second band pass filter comprises the 4th inductance L 4 and the 5th inductance L 5 that are connected successively with the second relay K 2; The 4th inductance L 4 is passed through the 14 capacitor C 14 ground connection near a side of the second relay K 2, the 4th inductance L 4 is distinguished ground connection near a side of the 5th electric capacity L5 by the 15 capacitor C the 15 and the 16 capacitor C 16 being set up in parallel, and the 5th inductance L 5 is passed through the 17 capacitor C 17 ground connection near a side of the 3rd relay K 3; The enamelled wire that the 4th inductance L 4 and the 5th inductance L 5 are 0.7mm even coiling 12 on nxo-10 is enclosed.
A kind of shortwave power amplifier of the present utility model has adopted the first power tube Q1 and the second power tube Q2, the model of two power tubes is IFR530, the input of two power tubes and output have adopted transformer coupled, have connect low pass filter after the output of output transformer to disturb outward with inhibition zone.
The wave band of the first band pass filter is 14MHz, and the wave band of the second band pass filter is 7MHz, can move to control which wave band of selection by the second relay K 2 and the 3rd relay K 3 simultaneously.This device is at the power of the exportable about 40W of 7MHz, at the power of the exportable about 20W of 14MHz.
The operation principle of a kind of shortwave power amplifier of the utility model: signal is inputted from RF_IN; Through Transmit enable relay; When in accepting state time, the first relay K 1 disconnects with power amplifier.Otherwise, the first relay K 1 closure, input signal enters into the first transformer T1; The secondary coil of the first transformer T1 has adopted tapped mode, and wherein, centre tap part has accessed biasing circuit, is the first power tube Q1 and the second power tube Q2 provides bias voltage.
The grid of the first power tube Q1 and the grid of the second power tube Q2 are received respectively in the other two ends of the first transformer T1 time level, control the output of the first power tube Q1 and the second power tube Q2; The grounded drain of the drain electrode of the first power tube Q1 and the second power tube Q2, the source electrode of the first power tube Q1 source electrode and the second power tube Q2 connects respectively the two ends of the primary coil of output transformer T2, the elementary of the second transformer T2 is also centre cap, and centre tapped part is received above the linear stabilized power supply of 13.8V; The secondary coil of the second transformer T2 is under the control of the second relay K 2, be linked into respectively on different filters, a branch road is that 7MHz low pass filter, another one branch road are 14MHz low pass filter, respectively the filtering humorous interference wave signal outside service band separately; The output of filter is further received in the 3rd relay K 3, under the control of the 3rd relay K 3, determines the filtered signal output of which wave band; The 3rd relay K 3 is further received in the 4th relay K 4; The 4th K4 relay is that use is controlled in transmitting-receiving, needs to disconnect in the time operating in receiving mode.
Claims (7)
1. a shortwave power amplifier, is characterized in that, comprises Transmit enable circuit (1), and described Transmit enable circuit (1) comprises the first relay (K1) and the 4th relay (K4); The normally opened contact of described the first relay (K1) is connected with the normally opened contact of the 4th relay (K4), the normally-closed contact of described the first relay (K1) is connected by the input matching circuit (2), power amplifier module (4), output circuit (5) and the normally-closed contact of the 4th relay (K4) that connect successively, the 4th described relay (K4) is also connected with antenna (6), and the feeder ear of described the first relay (K1) is connected and ground connection with the feeder ear of the 4th relay (K4); Described power amplifier module (4) is also connected with biasing circuit (3).
2. a kind of shortwave power amplifier as claimed in claim 1, is characterized in that, described power amplifier module (4) comprises the first transformer (T1), the second transformer (T2), the first power tube (Q1) and the second power tube (Q2); One end of described the first transformer (T1) primary coil is connected with input matching circuit (2), the other end ground connection of described the first transformer (T1) primary coil, the two ends of described the first transformer (T1) secondary coil are connected respectively to the grid of the second power tube (Q2) and the grid of the first power tube (Q1); The drain electrode of described the second power tube (Q2) is connected with the grid of the second power tube (Q2) with the 3rd resistance (R3) by the 3rd electric capacity (C3), the source electrode of described the second power tube (Q2) is connected with the source electrode of the first power tube (Q1), and the drain electrode of described the first power tube (Q1) is connected with the grid of the first power tube (Q1) with the 4th resistance (R4) by the 4th electric capacity (C4); The grid of described the first power tube (Q1) and the grid of the second power tube (Q2) are connected respectively to the two ends of the second transformer (T2) primary coil, one end of the secondary coil of described the second transformer (T2) is connected with output circuit (5), the other end ground connection of the secondary coil of described the second transformer (T2).
3. a kind of shortwave power amplifier as claimed in claim 2, it is characterized in that, described biasing circuit (3) comprises three-terminal voltage-stabilizing power regulator, the output of described three-terminal voltage-stabilizing power regulator is all connected and ground connection with the source electrode of the second power tube (Q2) and the source electrode of the first power tube (Q1) by the second electric capacity (C2), the output of described three-terminal voltage-stabilizing power regulator is also connected with the tap of the first transformer (T1) secondary coil, the input of described three-terminal voltage-stabilizing power regulator is connected with the tap of the second transformer (T2) primary coil by the first inductance (L1), the input of described three-terminal voltage-stabilizing power regulator is also by the 6th electric capacity (C6) being set up in parallel, the 5th electric capacity (C5) and the 7th electric capacity (C7) is ground connection respectively.
4. a kind of shortwave power amplifier as claimed in claim 2, is characterized in that, described input matching circuit (2) comprises the first resistance (R1), the second resistance (R2) and the first electric capacity (C1); The control end of described the first relay (K1) is connected to one end of the first transformer (T1) primary coil by the second resistance (R2) in parallel and the first electric capacity (C1), the control end of described the first relay (K1) is also by the first resistance (R1) ground connection.
5. a kind of shortwave power amplifier as claimed in claim 2, is characterized in that, described output circuit (5) comprises the second relay (K2), the 3rd relay (K3), the first band pass filter and the second band pass filter; The input of the first described band pass filter is all connected with the second transformer (T2) secondary coil by the second relay (K2) with the input of the second band pass filter, and the output of the first described band pass filter and the output of the second band pass filter are all connected to the 4th relay (K4) by the 3rd relay (K3); The feeder ear of the 3rd described relay (K3) is connected to the earth terminal of the second transformer (T2) secondary coil by the feeder ear of the second relay (K2).
6. a kind of shortwave power amplifier as claimed in claim 5, is characterized in that, the first described band pass filter comprises the second inductance (L2) and the 3rd inductance (L3) that are connected successively with the second relay (K2); One side of described close the second relay (K2) of the second inductance (L2) is by the 8th electric capacity (C8) and the 9th electric capacity (C9) ground connection respectively that are set up in parallel, one side of described close the 3rd electric capacity (L3) of the second inductance (L2) is by the tenth electric capacity (C10) and the 11 electric capacity (C11) ground connection respectively that are set up in parallel, and (side of K3 is by the 12 electric capacity (C12) ground connection near the 3rd relay for the 3rd described inductance (L3); The enamelled wire that described the second inductance (L2) and the 3rd inductance (L3) are 0.7mm even coiling 8 on nxo-10 is enclosed.
7. a kind of shortwave power amplifier as claimed in claim 5, is characterized in that, the second described band pass filter comprises the 4th inductance (L4) and the 5th inductance (L5) that are connected successively with the second relay (K2); The 4th described inductance (L4) passes through the 14 electric capacity (C14) ground connection near a side of the second relay (K2), one side of described close the 5th electric capacity (L5) of the 4th inductance (L4) is by the 15 electric capacity (C15) and the 16 electric capacity (C16) ground connection respectively that are set up in parallel, and the 5th described inductance (L5) passes through the 17 electric capacity (C17) ground connection near a side of the 3rd relay (K3); The enamelled wire that the 4th described inductance (L4) and the 5th inductance (L5) are 0.7mm even coiling 12 on nxo-10 is enclosed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420096117.XU CN203984418U (en) | 2014-03-04 | 2014-03-04 | A kind of shortwave power amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420096117.XU CN203984418U (en) | 2014-03-04 | 2014-03-04 | A kind of shortwave power amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203984418U true CN203984418U (en) | 2014-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420096117.XU Expired - Fee Related CN203984418U (en) | 2014-03-04 | 2014-03-04 | A kind of shortwave power amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203984418U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106788474A (en) * | 2016-12-08 | 2017-05-31 | 广州海格通信集团股份有限公司 | Switch the device of receiving and transmitting signal path |
-
2014
- 2014-03-04 CN CN201420096117.XU patent/CN203984418U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106788474A (en) * | 2016-12-08 | 2017-05-31 | 广州海格通信集团股份有限公司 | Switch the device of receiving and transmitting signal path |
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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: 20141203 Termination date: 20160304 |