CN111464193B - 1.25kW shortwave power amplifier device - Google Patents

1.25kW shortwave power amplifier device Download PDF

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CN111464193B
CN111464193B CN202010119509.3A CN202010119509A CN111464193B CN 111464193 B CN111464193 B CN 111464193B CN 202010119509 A CN202010119509 A CN 202010119509A CN 111464193 B CN111464193 B CN 111464193B
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capacitor
transformer
power amplifier
resistor
pin
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CN111464193A (en
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刘艳国
张文
张承云
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Panda Electronics Group Co Ltd
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Panda Electronics Group Co Ltd
Nanjing Panda Handa Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H04B2001/0408—Circuits with power amplifiers

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Abstract

本发明公开了一种1.25kW短波功放装置，包括信号输入端、电容五C5、电容六C6、电感一L1、变压器一T1、电阻一R1、电容三C3、电容五二C52、电阻四R4、电位器RP1、电阻四R4、电容七C7、功放管V1、电阻五R5、电感二L2、电容八C8、电阻六R6、电感三L3、变压器二T2、变压器三T3、输出耦合电容器一、输出耦合电容器二、信号输出端，本发明体积小、功率大、成本低，用在1kW短波电台及20kW短波发射机上，可以显著降低发射机的成本和减小发射机的体积。

Figure 202010119509

The invention discloses a 1.25kW short-wave power amplifier device, which comprises a signal input terminal, capacitor five C5, capacitor six C6, inductor one L1, transformer one T1, resistor one R1, capacitor three C3, capacitor five two C52, resistor four R4, Potentiometer RP1, resistor four R4, capacitor seven C7, power amplifier tube V1, resistor five R5, inductor two L2, capacitor eight C8, resistor six R6, inductor three L3, transformer two T2, transformer three T3, output coupling capacitor one, output Coupling capacitor 2. Signal output end. The invention has small volume, high power and low cost. It can be used in 1kW shortwave radio station and 20kW shortwave transmitter, which can significantly reduce the cost and volume of the transmitter.

Figure 202010119509

Description

1.25kW shortwave power amplifier device
Technical Field
The invention relates to a short-wave power amplifier device, and belongs to the technical field of communication.
Background
Communication is one of the activities necessary for human survival, long-distance communication relies on the transmission of electromagnetic signals, and transmitters are necessary devices for long-distance transmission of electromagnetic signals. The short-wave power amplifier is a key component of a short-wave communication transmitter and determines key indexes of the transmitter such as power, efficiency, linearity and reliability. It is a constant pursuit of engineers to design power amplifiers with high efficiency, high linearity, and high reliability.
The simplest, effective and common method to increase communication distance and improve interference rejection is to use a high power transmitter, such as a 20kW transmitter. The power of 20kW transmitter is synthesized by tens of power amplifier modules. The larger the power of the power amplification module is, the less the number of the power amplification modules is required, the simpler the synthesis circuit is, the fewer the power amplification tubes are, and the lower the cost of the transmitter is. The development direction of the transmitter and the development direction of the power amplifier module are high-power, high-efficiency and small-size.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides a 1.25kW short-wave power amplifier device which has high power, small volume, high efficiency and good reliability, and can obviously reduce the cost of a transmitter when used for a high-power transmitter.
The technical scheme is as follows: in order to achieve the purpose, the invention adopts the technical scheme that:
a1.25 kW short-wave power amplifier device comprises a signal input end, a capacitor five C5, a capacitor six C6, an inductor one L1, a transformer one T1, a resistor one R1, a capacitor three C3, a capacitor five two C52, a resistor four R4, a potentiometer RP1, a resistor four R4, a capacitor seven C7, a power amplifier tube V1, a resistor five R5, an inductor two L2, a capacitor eight C8, a resistor six R6, an inductor three L3, a transformer two T2, a transformer three T3, an output coupling capacitor one, an output coupling capacitor two and a signal output end, wherein the signal input end, the capacitor five C5, the inductor one L1 and the pin one of the transformer one T1 are sequentially connected, one end of the capacitor six C6 is connected to a joint between the capacitor five C5 and the inductor one L1, and the other end of the capacitor six C6 is grounded; a pin II of the transformer I T1 is grounded, one end of the capacitor III C3 is connected with a pin V of the transformer I T1, and the other end of the capacitor III C3 is grounded; one end of the first resistor R1 is connected with a pin five of the first transformer T1, the other end of the first resistor R1 is connected with a potentiometer RP1, the potentiometer RP1 is connected with a 5V power supply connector, one end of the fifth capacitor C52 is connected between the potentiometer RP1 and the 5V power supply connector, and the other end of the fifth capacitor C52 is grounded; a third pin of the first transformer T1 is connected with a first gate G1 of the power tube V1, and a fourth pin of the first transformer T1 is connected with a second gate G of the power tube V1; one end of the resistor IV R4 is connected to a connecting line between a pin III of the transformer I T1 and a gate I G1 of the power amplifier tube V1, and the other end of the resistor IV R4 is connected to a connecting line between a pin IV of the transformer I T1 and a gate II G of the power amplifier tube V1; one end of the capacitor seven C7 is connected to a connecting line between the resistor four R4 and the grid electrode one G1 of the power amplification tube V1, the other end of the capacitor seven C7 is connected with one end of the resistor five R5, the other end of the resistor five R5 is connected with one end of the inductor two L2, and the other end of the inductor two L2 is connected with a 50V power supply connector; one end of the capacitor eight C8 is connected to a connecting line between the resistor four R4 and the second grid G of the power amplifier tube V1, the other end of the capacitor eight C8 is connected with one end of the resistor six R6, the other end of the resistor six R6 is connected with one end of the inductor three L3, and the other end of the inductor three L3 is connected with a 50V power connector; a first drain electrode D1 of the power amplifier tube V1 is connected to a connecting line between a five-resistor R5 and an inductor II L2, a second drain electrode D of the power amplifier tube V1 is connected to a connecting line between a six-resistor R6 and an inductor III 3, and a first source electrode S1 and a second source electrode S of the power amplifier tube V1 are grounded; a first pin of the second transformer T2 is connected with a second drain D of the power amplifier tube V1, a second pin of the second transformer T2 is connected with a first drain D1 of the power amplifier tube V1, a third pin of the second transformer T2 is connected with an input end of the second output coupling capacitor, a fifth pin of the third transformer T3 is connected with a first drain D1 of the power amplifier tube V1, a sixth pin of the third transformer T3 is connected with a second drain D of the power amplifier tube V1, and a seventh pin of the third transformer T2 is connected with an input end of the first output coupling capacitor; the first pin of the transformer four T4 is connected with the output end of the first output coupling capacitor, the second pin of the transformer four T4 is connected with the output end of the second output coupling capacitor, the fourth pin of the transformer four T4 is grounded, and the third pin of the transformer four T4 is connected with the signal output end.
Preferably: the signal input is provided with a socket XS 1.
Preferably: the signal output end is provided with a second socket XS 2.
Preferably: the output coupling capacitor I comprises a capacitor I five C15, a capacitor I six C16, a capacitor I seven C17 and a capacitor I eight C18 which are connected in parallel.
Preferably: the output coupling capacitor II is connected with a capacitor-nine C19, a capacitor-twenty C20, a capacitor-two-C21 and a capacitor-two-C22 in parallel.
Preferably: the power amplifier tube V1 is a BLF1K85 type power amplifier tube.
Compared with the prior art, the invention has the following beneficial effects:
the invention has small volume, large power and low cost, is used on a 1kW short-wave radio station and a 20kW short-wave transmitter, and can obviously reduce the cost and the volume of the transmitter.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
The present invention is further illustrated by the following description in conjunction with the accompanying drawings and the specific embodiments, it is to be understood that these examples are given solely for the purpose of illustration and are not intended as a definition of the limits of the invention, since various equivalent modifications will occur to those skilled in the art upon reading the present invention and fall within the limits of the appended claims.
A1.25 kW short-wave power amplifier device is shown in FIG. 1 and comprises a socket I XS1, a capacitor five C5, a capacitor six C6, an inductor I L1, a transformer I T1, a resistor I R1, a capacitor three C3, a capacitor five two C52, a resistor four R4, a potentiometer RP1, a resistor four R4, a capacitor seven C7, a power amplifier tube V1, a resistor five R5, an inductor two L2, a capacitor eight C8, a resistor six R6, an inductor three L3, a transformer two T2, a transformer three T3, an output coupling capacitor I, an output coupling capacitor two and a socket two XS2, wherein the socket I XS1, the capacitor five C5, the inductor I L1 and a pin I of the transformer T1 are sequentially connected, one end of the capacitor six C6 is connected to a joint between the capacitor five C5 and the inductor I1, and the other end of the capacitor I XS is grounded; a pin II of the transformer I T1 is grounded, one end of the capacitor III C3 is connected with a pin V of the transformer I T1, and the other end of the capacitor III C3 is grounded; one end of the first resistor R1 is connected with a pin five of the first transformer T1, the other end of the first resistor R1 is connected with a potentiometer RP1, the potentiometer RP1 is connected with a 5V power supply connector, one end of the fifth capacitor C52 is connected between the potentiometer RP1 and the 5V power supply connector, and the other end of the fifth capacitor C52 is grounded; a third pin of the first transformer T1 is connected with a first gate G1 of the power tube V1, and a fourth pin of the first transformer T1 is connected with a second gate G of the power tube V1; one end of the resistor IV R4 is connected to a connecting line between a pin III of the transformer I T1 and a gate I G1 of the power amplifier tube V1, and the other end of the resistor IV R4 is connected to a connecting line between a pin IV of the transformer I T1 and a gate II G of the power amplifier tube V1; one end of the capacitor seven C7 is connected to a connecting line between the resistor four R4 and the grid electrode one G1 of the power amplification tube V1, the other end of the capacitor seven C7 is connected with one end of the resistor five R5, the other end of the resistor five R5 is connected with one end of the inductor two L2, and the other end of the inductor two L2 is connected with a 50V power supply connector; one end of the capacitor eight C8 is connected to a connecting line between the resistor four R4 and the second grid G of the power amplifier tube V1, the other end of the capacitor eight C8 is connected with one end of the resistor six R6, the other end of the resistor six R6 is connected with one end of the inductor three L3, and the other end of the inductor three L3 is connected with a 50V power connector; a first drain electrode D1 of the power amplifier tube V1 is connected to a connecting line between a five-resistor R5 and an inductor II L2, a second drain electrode D of the power amplifier tube V1 is connected to a connecting line between a six-resistor R6 and an inductor III 3, and a first source electrode S1 and a second source electrode S of the power amplifier tube V1 are grounded; a first pin of the second transformer T2 is connected with a second drain D of the power amplifier tube V1, a second pin of the second transformer T2 is connected with a first drain D1 of the power amplifier tube V1, a third pin of the second transformer T2 is connected with an input end of the second output coupling capacitor, a fifth pin of the third transformer T3 is connected with a first drain D1 of the power amplifier tube V1, a sixth pin of the third transformer T3 is connected with a second drain D of the power amplifier tube V1, and a seventh pin of the third transformer T2 is connected with an input end of the first output coupling capacitor; the first pin of the transformer four T4 is connected with the output end of the first output coupling capacitor, the second pin of the transformer four T4 is connected with the output end of the second output coupling capacitor, and the first output coupling capacitor comprises a capacitor one-five C15, a capacitor one-six C16, a capacitor one-seven C17 and a capacitor one-eight C18 which are connected in parallel. The two output coupling capacitors are connected in parallel to form a first capacitor-nine-C19, a second capacitor-twenty-C20, a first capacitor-C21 and a second capacitor-C22, the four pins of the transformer four T4 are grounded, and the three pins of the transformer four T4 are connected with a second socket-three XS 2.
The power amplifier tube V1 adopts a BLF1K85 type power amplifier tube, an inductor two L2 and an inductor three L3 are feed inductors of a 50V power supply, a resistor five R5, a resistor six R6, a capacitor seven C7 and a capacitor eight C8 are negative feedback elements, a capacitor six C6, an inductor one L1, a transformer one T1 and a resistor four R4 are input impedance matching elements, a transformer two T2 and a transformer three T3 form an output impedance matching transformer, a capacitor one five C15-a capacitor two C22 form two output coupling capacitors, a transformer four T4 is a balanced-to-unbalanced transformer, 5V voltage is regulated by a potentiometer RP1 and then provides bias voltage for two grids of the power amplifier tube V1 through a resistor one R1 and a transformer one T1, a radio frequency signal is input from a socket XS1 and is output from an XS socket 2 after power amplification.
The power of the invention is 1.25kW, the gain is more than 24dB, and the efficiency is more than 60%, therefore, the invention has small volume, large power and low cost, and can obviously reduce the cost of the transmitter and the volume of the transmitter when being used on a 1kW short-wave radio station and a 20kW short-wave transmitter. The power amplifier device can save millions to thousands of yuan for enterprises by comprehensively considering the application number, the production cost and the maintenance cost of the modules.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.

Claims (4)

1.一种1.25kW短波功放装置，其特征在于：包括信号输入端、电容五（C5）、电容六（C6）、电感一（L1）、变压器一（T1）、电阻一（R1）、电容三（C3）、电容五二（C52）、电阻四（R4）、电位器（RP1）、变压器四（T4）、电容七（C7）、功放管（V1）、电阻五（R5）、电感二（L2）、电容八（C8）、电阻六（R6）、电感三（L3）、变压器二（T2）、变压器三（T3）、输出耦合电容器一、输出耦合电容器二、信号输出端，其中，所述信号输入端、电容五（C5）、电感一（L1）、变压器一（T1）的引脚一依次连接，所述电容六（C6）一端连接在电容五（C5）与电感一（L1）之间的接头上，而另一端接地；所述变压器一（T1）的引脚二接地，所述电容三（C3）一端与变压器一（T1）的引脚五连接，另一端接地；所述电阻一（R1）一端与变压器一（T1）的引脚五连接，另一端与电位器（RP1）连接，所述电位器（RP1）与5V电源接头连接，所述电容五二（C52）一端连接在电位器（RP1）与5V电源接头之间，另一端接地；所述变压器一（T1）的引脚三与功放管（V1）的栅极二（G）连接，所述变压器一（T1）的引脚四与功放管（V1）的栅极一（G1）连接；所述电阻四（R4）一端连接在变压器一（T1）的引脚三与功放管（V1）的栅极二（G）之间的连接线上，所述电阻四（R4）另一端连接在变压器一（T1）的引脚四与功放管（V1）的栅极一（G1）之间的连接线上；所述电容七（C7）一端连接在电阻四（R4）与功放管（V1）的栅极一（G1）之间的连接线上，所述电容七（C7）的另一端与电阻五（R5）的一端连接，所述电阻五（R5）的另一端与电感二（L2）的一端连接，所述电感二（L2）的另一端连接50V电源接头；所述电容八（C8）一端连接在电阻四（R4）与功放管（V1）的栅极二（G）之间的连接线上，所述电容八（C8）的另一端与电阻六（R6）的一端连接，所述电阻六（R6）的另一端与电感三（L3）的一端连接，所述电感三（L3）的另一端连接50V电源接头；所述功放管（V1）的漏极一（D1）连接在电阻五（R5）与电感二（L2）之间的连接线上，所述功放管（V1）的漏极二（D）连接在电阻六（R6）与电感三（L3）之间的连接线上，所述功放管（V1）的源极一（S1）、源极二（S）接地；所述变压器二（T2）的引脚一与功放管（V1）的漏极二（D）连接，所述变压器二（T2）的引脚二与功放管（V1）的漏极一（D1）连接，所述变压器二（T2）的引脚三与输出耦合电容器二的输入端连接，所述变压器三（T3）的引脚五与功放管（V1）的漏极一（D1）连接，所述变压器三（T3）的引脚六与功放管（V1）的漏极二（D）连接，所述变压器三（T3）的引脚七与输出耦合电容器一的输入端连接；所述变压器四（T4）的引脚一与输出耦合电容器一的输出端连接，所述变压器四（T4）的引脚二与输出耦合电容器二的输出端连接，所述变压器四（T4）的引脚四接地，所述变压器四（T4）的引脚三接信号输出端。1. A 1.25kW short-wave power amplifier device, characterized in that it comprises a signal input terminal, a capacitor five (C5), a capacitor six (C6), an inductor one (L1), a transformer one (T1), a resistor one (R1), a capacitor Three (C3), capacitor five (C52), resistor four (R4), potentiometer (RP1), transformer four (T4), capacitor seven (C7), power amplifier tube (V1), resistor five (R5), inductor two (L2), capacitor eight (C8), resistor six (R6), inductor three (L3), transformer two (T2), transformer three (T3), output coupling capacitor one, output coupling capacitor two, and signal output terminal, among which, The signal input terminal, capacitor five (C5), inductor one (L1), and pin one of transformer one (T1) are connected in sequence, and one end of capacitor six (C6) is connected to capacitor five (C5) and inductor one (L1). ), and the other end is grounded; the second pin of the transformer one (T1) is grounded, one end of the capacitor three (C3) is connected to the fifth pin of the transformer one (T1), and the other end is grounded; One end of the resistor one (R1) is connected to the pin five of the transformer one (T1), and the other end is connected to the potentiometer (RP1), the potentiometer (RP1) is connected to the 5V power supply connector, and the capacitor five two (C52) One end is connected between the potentiometer (RP1) and the 5V power supply connector, and the other end is grounded; the third pin of the transformer one (T1) is connected to the grid two (G) of the power amplifier tube (V1), the transformer one ( Pin 4 of T1) is connected to the gate 1 (G1) of the power amplifier tube (V1); one end of the resistor 4 (R4) is connected to the pin 3 of the transformer 1 (T1) and the gate 2 of the power amplifier tube (V1). On the connecting line between (G), the other end of the resistor four (R4) is connected to the connecting line between the pin four of the transformer one (T1) and the grid one (G1) of the power amplifier tube (V1); One end of the capacitor seven (C7) is connected to the connection line between the resistor four (R4) and the gate one (G1) of the power amplifier tube (V1), and the other end of the capacitor seven (C7) is connected to the resistor five (R5). ), the other end of the resistor five (R5) is connected to one end of the inductor two (L2), and the other end of the inductor two (L2) is connected to the 50V power supply connector; one end of the capacitor eight (C8) is connected to the On the connecting line between the resistor four (R4) and the grid two (G) of the power amplifier tube (V1), the other end of the capacitor eight (C8) is connected to one end of the resistor six (R6), and the resistor six ( The other end of R6) is connected to one end of the inductor three (L3), and the other end of the inductor three (L3) is connected to the 50V power supply connector; the drain one (D1) of the power amplifier tube (V1) is connected to the resistor five (R5) ) and inductor two (L2), the drain two (D) of the power amplifier tube (V1) is connected to the connecting line between resistor six (R6) and inductor three (L3), the The source one (S1) and the second source (S) of the power amplifier tube (V1) are grounded; the first pin of the transformer two (T2) and the second drain (S) of the power amplifier tube (V1) D) connection, the second pin of the transformer two (T2) is connected with the drain one (D1) of the power amplifier tube (V1), and the third pin of the transformer two (T2) is connected with the input end of the output coupling capacitor two , the fifth pin of the transformer three (T3) is connected with the drain one (D1) of the power amplifier tube (V1), and the sixth pin of the transformer three (T3) is connected with the drain two (D1) of the power amplifier tube (V1). ) connection, the pin seven of the transformer three (T3) is connected to the input end of the output coupling capacitor one; the pin one of the transformer four (T4) is connected to the output end of the output coupling capacitor one, and the transformer four (T4) is connected to the output end of the output coupling capacitor one. Pin 2 of T4) is connected to the output end of the output coupling capacitor 2, pin 4 of the transformer 4 (T4) is grounded, and pin 3 of the transformer 4 (T4) is connected to the signal output end. 2.根据权利要求1所述1.25kW短波功放装置，其特征在于：所述输出耦合电容器一包括并联在一起的电容一五（C15）、电容一六（C16）、电容一七（C17）、电容一八（C18）。2. The 1.25kW short-wave power amplifier device according to claim 1, wherein the output coupling capacitor 1 comprises capacitors one five (C15), capacitor one six (C16), capacitor one seven (C17), and capacitors connected in parallel. Capacitor One Eight (C18). 3.根据权利要求2所述1.25kW短波功放装置，其特征在于：所述输出耦合电容器二包括并联在一起的电容一九（C19）、电容二十（C20）、电容二一（C21）、电容二二（C22）。3. The 1.25kW short-wave power amplifier device according to claim 2, wherein the output coupling capacitor two comprises a capacitor nine (C19), a capacitor twenty (C20), a capacitor two one (C21), Capacitor Two Two (C22). 4.根据权利要求3所述1.25kW短波功放装置，其特征在于：所述功放管（V1）为BLF1K85型功放管。4. The 1.25kW short-wave power amplifier device according to claim 3, wherein the power amplifier tube (V1) is a BLF1K85 type power amplifier tube.
CN202010119509.3A 2020-02-26 2020-02-26 1.25kW shortwave power amplifier device Expired - Fee Related CN111464193B (en)

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