CN205178998U - Microwave frequency conversion power amplifier circuit - Google Patents

Abstract

The utility model discloses a microwave frequency conversion power amplifier circuit, including electric capacity C1, resistance R3, potentiometre R10, electric capacity C2, triode Q1 and auto transformer T1. The utility model discloses microwave frequency conversion power amplifier circuit is through using resonance circuit, and messenger's circuit is simple, electronic component is few in the use, has realized not only that consumption is few, amplifies efficiently in addition.

Description

Microwave frequency conversion power amplifier

Technical field

The utility model relates to a kind of microwave circuit, specifically microwave frequency conversion power amplifier.

Background technology

Radio communication brings great convenience to daily life and industrial production since birth, along with the development of science and technology, microwave ddc communication technology has become the primary study direction of photoelectronic industry in recent years due to advantages such as strong interference immunity, low transmission losses, and is widely used in various electromechanical control field.And power amplifier determines microwave frequency conversion effect greatly, in the radio frequency front end chip supporting multiple communication standard, power amplifier needs consuming under few power consumption prerequisite, carry high-power amplification efficiency as much as possible, prior art or circuit complexity, consumed power is few, or circuit is simple, consumed power is many, and amplification efficiency is not high.

Utility model content

The purpose of this utility model is to provide that a kind of circuit is simple, consumed power is low and the microwave frequency conversion power amplifier that amplification efficiency is high, to solve the problem proposed in above-mentioned background technology.

For achieving the above object, the utility model provides following technical scheme:

Microwave frequency conversion power amplifier, comprises electric capacity C1, resistance R3, potentiometer R10, electric capacity C2, triode Q1 and autotransformer T1, described electric capacity C1 one end connects input signal, and the electric capacity C1 other end is contact resistance R1 respectively, resistance R2 and triode Q1 base stage, triode Q1 collector electrode connects tunable capacitor C10 respectively, electric capacity C3 and autotransformer T1 tap 3, autotransformer T1 tap 1 connect the variable capacitance C10 other end respectively, the electric capacity C3 other end, the resistance R1 other end, variable capacitance C11, electric capacity C6, autotransformer T2 tap 1, ground capacity C9 and inductance L 4, autotransformer T1 tap 2 connects electric capacity C4, and the electric capacity C4 other end connects inductance L 2 respectively, resistance R8, triode Q2 base stage, described triode Q1 emitter respectively contact resistance R3 and electric capacity C2, the resistance R3 other end connects potentiometer R10 slide plate and potentiometer R10 one end respectively, and the potentiometer R10 other end is the contact resistance R2 other end respectively, the resistance R8 other end, the electric capacity C2 other end, inductance L 2 other end, potentiometer R9, electric capacity C5 and resistance R5 ground connection, described triode Q2 emitter is contact resistance R6 and the electric capacity C5 other end respectively, and the resistance R6 other end connects potentiometer R9 slide plate and the potentiometer R9 other end respectively, and triode Q2 collector electrode connects the variable capacitance C11 other end respectively, the electric capacity C6 other end and autotransformer T2 tap 3, autotransformer tap 2 connects electric capacity C7, and the electric capacity C7 other end is the contact resistance R5 other end and output respectively, and described inductance L 4 other end connects power supply VCC and ground capacity C8.

As further program of the utility model: described autotransformer T1 and autotransformer T2 is step-up transformer.

As the utility model further scheme: described power supply VCC voltage is 15V.

Compared with prior art, the beneficial effects of the utility model are: the utility model microwave frequency conversion power amplifier by using resonant tank, make circuit simple, use electronic component few, not only achieve that to consume power consumption few, and amplification efficiency is high.

Accompanying drawing explanation

Fig. 1 is the circuit diagram of microwave frequency conversion power amplifier.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.

Refer to Fig. 1, in the utility model embodiment, microwave frequency conversion power amplifier, comprises electric capacity C1, resistance R3, potentiometer R10, electric capacity C2, triode Q1 and autotransformer T1, electric capacity C1 one end connects input signal, and the electric capacity C1 other end is contact resistance R1 respectively, resistance R2 and triode Q1 base stage, triode Q1 collector electrode connects tunable capacitor C10 respectively, electric capacity C3 and autotransformer T1 tap 3, autotransformer T1 tap 1 connect the variable capacitance C10 other end respectively, the electric capacity C3 other end, the resistance R1 other end, variable capacitance C11, electric capacity C6, autotransformer T2 tap 1, ground capacity C9 and inductance L 4, autotransformer T1 tap 2 connects electric capacity C4, and the electric capacity C4 other end connects inductance L 2 respectively, resistance R8, triode Q2 base stage, triode Q1 emitter respectively contact resistance R3 and electric capacity C2, the resistance R3 other end connects potentiometer R10 slide plate and potentiometer R10 one end respectively, and the potentiometer R10 other end is the contact resistance R2 other end respectively, the resistance R8 other end, the electric capacity C2 other end, inductance L 2 other end, potentiometer R9, electric capacity C5 and resistance R5 ground connection, triode Q2 emitter is contact resistance R6 and the electric capacity C5 other end respectively, and the resistance R6 other end connects potentiometer R9 slide plate and the potentiometer R9 other end respectively, and triode Q2 collector electrode connects the variable capacitance C11 other end respectively, the electric capacity C6 other end and autotransformer T2 tap 3, autotransformer tap 2 connects electric capacity C7, and the electric capacity C7 other end is the contact resistance R5 other end and output respectively, and inductance L 4 other end connects power supply VCC and ground capacity C8.

Autotransformer T1 and autotransformer T2 is step-up transformer.

Power supply VCC voltage is 15V.

Operation principle of the present utility model is: the utility model microwave frequency conversion power amplifier comprises resonant circuit, amplifying circuit and booster circuit, resonant circuit comprises resistance R3, potentiometer R10 and electric capacity C2, amplifying circuit comprises resistance R1, resistance R2, electric capacity C1 and triode Q1, and booster circuit comprises electric capacity C3, variable capacitance C10 and autotransformer T1.

Microwave frequency conversion power amplifier is used for microwave frequency changer circuit final stage, effect is that modulated wave signal is carried out power amplification, to meet the requirement of transmitted power, then be radiated space through antenna, ensure that the receiver in certain area can receive satisfied signal level, and do not disturb the communication of adjacent channel, by using resonant tank, make circuit simple, use electronic component few, not only achieve that to consume power consumption few, and the amplification efficiency of amplifying circuit is high.

The initial condition of microwave frequency conversion power amplifier is in tuning process, or there will be off resonance state, namely the impedance of emitter circuit is in perception or in capacitive, decline making the equiva lent impedance in loop, at this moment triode Q1 emitter output voltage reduces, collector current increases, the dissipation power of collector electrode increases, transistor may be damaged time serious, for ensureing components and parts trouble free service, time tuning, first supply voltage VCC can be reduced to 1/3rd of setting, after finding resonance point, again VCC is raised to setting, then finely tunes loop parameter.

Autotransformer T1 and autotransformer T2 is responsible for the signal after by amplification in power amplification circuit and carries out boost operations, and preventing too much in signal loss decay in circuitry processes, affects and export.

Claims (3)

1. microwave frequency conversion power amplifier, comprises electric capacity C1, resistance R3, potentiometer R10, electric capacity C2, triode Q1 and autotransformer T1, is characterized in that, described electric capacity C1 one end connects input signal, and the electric capacity C1 other end is contact resistance R1 respectively, resistance R2 and triode Q1 base stage, triode Q1 collector electrode connects tunable capacitor C10 respectively, electric capacity C3 and autotransformer T1 tap 3, autotransformer T1 tap 1 connect the variable capacitance C10 other end respectively, the electric capacity C3 other end, the resistance R1 other end, variable capacitance C11, electric capacity C6, autotransformer T2 tap 1, ground capacity C9 and inductance L 4, autotransformer T1 tap 2 connects electric capacity C4, and the electric capacity C4 other end connects inductance L 2 respectively, resistance R8, triode Q2 base stage, described triode Q1 emitter respectively contact resistance R3 and electric capacity C2, the resistance R3 other end connects potentiometer R10 slide plate and potentiometer R10 one end respectively, and the potentiometer R10 other end is the contact resistance R2 other end respectively, the resistance R8 other end, the electric capacity C2 other end, inductance L 2 other end, potentiometer R9, electric capacity C5 and resistance R5 ground connection, described triode Q2 emitter is contact resistance R6 and the electric capacity C5 other end respectively, and the resistance R6 other end connects potentiometer R9 slide plate and the potentiometer R9 other end respectively, and triode Q2 collector electrode connects the variable capacitance C11 other end respectively, the electric capacity C6 other end and autotransformer T2 tap 3, autotransformer tap 2 connects electric capacity C7, and the electric capacity C7 other end is the contact resistance R5 other end and output respectively, and described inductance L 4 other end connects power supply VCC and ground capacity C8.

2. microwave frequency conversion power amplifier according to claim 1, is characterized in that, described autotransformer T1 and autotransformer T2 is step-up transformer.

3. microwave frequency conversion power amplifier according to claim 1, is characterized in that, described power supply VCC voltage is 15V.