Miniaturization and high-stability radio-frequency signal output module

Abstract

The invention discloses a miniaturization and high-stability radio-frequency signal output module which comprises a medium-power amplifying module, a single-pole single-throw switch, a coupler, a low-pass filter and an isolator. Input of the medium-power amplifying module is connected with a signal input end. Output of the medium-power amplifying module is connected with input of the coupler through the single-pole single-throw switch. One path of output of the coupler is connected with input of the isolator through the low-pass filter. Output of the isolator is connected with a signal output end. Other two paths of output of the coupler are coupling output and detection output respectively. The miniaturization and high-stability radio-frequency signal output module has ideal impedance matching, system stability is enhanced, meanwhile, non-linear distortion is weakened, an amplifier port is good in standing wave performance, the using stability of an amplifier is improved, the single-pole single-throw switch is used, so that output module loss is lowered, the isolation degree is improved, switch response time is shortened, and meanwhile the output module has the advantages of being simple in circuit structure, low in cost, good in signal output effect and the like.

Description

technical field [0001] The invention relates to a miniaturized and highly stable radio frequency signal output module. Background technique [0002] With the continuous improvement of people's living standards and the in-depth development of modern communication technology, communication equipment such as mobile communication terminals such as mobile phones and telephones are developing towards miniaturization and low energy consumption, which requires that each component in the communication equipment adopts a small Minimize the design, try to control its size, weight and thickness, and at the same time reduce the number of components and power consumption of components as much as possible. [0003] The radio frequency signal output module can mainly realize functions such as amplification and pulse modulation of the input signal, and is an indispensable part of radio frequency communication equipment. However, the impedance matching of the power amplifier in the existing ...

AI Technical Summary

Problems solved by technology

However, the impedance matching of the power amplifier in the existing RF signal output module is not ideal, and the wrong impedance matching makes the circuit stability poor, and at the same time reduces the circuit efficiency and increases the nonlinear distortion

In addition, the standing wave characteristics of the amplifier port are poor, which will cause bad phenomena such as self-excitation of the amplifier, increase of parasitic clutter, and even damage the amplifier.

Power switches have disadvantages such as large loss, unsatisfactory isolation, large input-output standing wave ratio, and long switch response time.

At the same time, the structure of the filter circuit is complex, the production difficulty and cost are high, and the filtering effect is average.

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