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An implementation method and device for quickly responding to switch power amplification

A fast-response, switching technology, applied to power amplifiers, improving amplifiers to improve efficiency, etc., can solve the problems of long response time of switches to control signals, increase the difficulty of system design, and low system efficiency, so as to shorten response time and simplify thermal design , The effect of reducing technical difficulty

Inactive Publication Date: 2007-11-28
SUNWAVE COMM
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Problems solved by technology

Although this approach improves the isolation, but because the power management is performed on the source level of the linear power amplifier management power supply, and the source level generally has a large capacitance and extremely high voltage, it takes a long time for the switch to respond to the control signal
Moreover, the existing system usually has a pre-amplifier to pre-amplify the signal before the main linear power amplifier. The previous technology did not manage these pre-amplifiers, which made the entire system very low in efficiency and increased the difficulty of system design.

Method used

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  • An implementation method and device for quickly responding to switch power amplification
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Embodiment Construction

[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0029] The method and device for fast-response switching power amplifier realized by the present invention are aimed at the system of TDD working mode, because the power consumption requirement of the system is relatively high. However, the present invention performs power management on the basis of the linear power amplifier, so that the linear power amplifier works in the TDD mode system. When the system is in the receiving state, the entire sending part stops working, so the power consumption of the system can be reduced. Therefore, the linear power amplifier in the system adopts the switching mode on the premise of meeting the system linearity index, thereby greatly reducing the power consumption of the system, and can improve the isolation degree of sending and receiving in the actual work of the system.

[0030] As shown in Figure 1: [10...

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Abstract

The invention discloses a rapid-response device of switch power amplifier, which comprises the following parts: linear power amplifier, forestage driving, RF switch, power managing circuit of linear power amplifier to proceed real-time switch management for linear power amplifier. The realizing method comprises the following steps: 1. inputting control signal of RF switch to make the RF switch at sending condition; 2. making the power managing circuit at conductive condition; starting power for linear power amplifier and forestage driving; 3. finishing normal amplifying function through linear function and RF signal output; 4. cutting the RF input signal; making the RF switch at receiving or cutting condition; 5. cutting linear power amplifier and forestage driving power; finishing the cut of linear power amplifier and forestage driving.

Description

technical field [0001] The invention relates to the field of linear power amplifiers, and mainly relates to a method and device for realizing fast response switching power amplifiers. Background technique [0002] Linear power amplifiers are of increasing importance in modern microwave communication systems. Especially in the mobile communication system of the digital communication system, the linear power amplifier is already an essential and important component. Nowadays, various mobile communication systems coexist, and the requirements for power amplifiers are getting higher and higher, which brings a lot of inconvenience to developers and users. [0003] The main function of the power amplifier is to amplify the power of the small signal in the front stage, so that the output power of the transmitted signal can not only meet the requirements of the communication system, but also the distortion generated should be small enough so as not to change the spectral shape of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F3/20H03F1/02
Inventor 舒晓军俞海明王学富周叶茂
Owner SUNWAVE COMM
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