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Circuit for optimizing power amplifier stability

A stability and circuit technology, applied in amplifier protection circuit layout, power amplifier, high-frequency amplifier, etc., can solve the problem of sacrificing the working efficiency of power amplifier tubes, avoid permanent chip damage, ensure output power, and improve stability Effect

Pending Publication Date: 2018-01-12
TOEC TECH
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The radio frequency power amplifier is the core of the transmitting part in radio communication. The radio frequency power amplifier works in a stable state is the premise of transmitting the carrier signal. The traditional method is to enhance the stability of the amplifier through negative feedback but greatly sacrifices the working efficiency of the power amplifier tube.

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  • Circuit for optimizing power amplifier stability

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Embodiment Construction

[0014] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0015] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0016] A circuit that optimizes PA stability, such as figure 1 As shown, it includes a single-chip microcomputer, a numerically controlled attenuator, a power amplifier unit, a current detection chip, a power detector and a temperature sensor. The power amplifier unit is an amplification link composed of an amplifier, a pre-push amplifier, and a final power amplifier in series;

[0017] The current change from the leakage voltage supply end to the load end is detected by the current detection chip, and the corresponding value detected by the current detection chip is sent to the A / D end of the single-chip microcomputer in real time, and the single-chip microcomputer detects the value in ...

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Abstract

The invention provides a circuit for optimizing power amplifier stability. The circuit comprises a microcontroller, a numerical control attenuator, a power amplifier unit, a current detection chip, apower detector and a temperature sensor. The current detection chip, the power detector and the temperature sensor are in signal connection with an A / D collection end of the microcontroller. The microcontroller is also connected with the numerical control attenuator. An input end of the numerical control attenuator is connected with transmitting excitation signal input, and an output end is connected with the power amplifier unit. The circuit has the following advantages that according to the scheme, the stability of a power amplifier link is greatly improved, the power amplifier link works stably, moreover, the working efficiency of a radio frequency power amplifier is greatly improved, and a chip is prevented from being damaged permanently.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a circuit for optimizing the stability of a power amplifier. Background technique [0002] The radio frequency power amplifier is the core of the transmitting part in radio communication. The radio frequency power amplifier works in a stable state is the premise of transmitting the carrier signal. The traditional method is to enhance the stability of the amplifier through negative feedback but greatly sacrifices the working efficiency of the power amplifier tube. . Contents of the invention [0003] In view of this, the present invention aims to provide a circuit for optimizing the stability of the power amplifier, so as to ensure the stable output power of the chip and avoid permanent damage to the chip. [0004] In order to achieve the above object, technical solution of the present invention is achieved in that way: [0005] A circuit for optimiz...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F1/02H03F1/30H03F1/52H03F3/189H03F3/20G01R19/25
Inventor 张建军李媛媛秦进杰李柬郝帅龙徐文大
Owner TOEC TECH