基于RX3400的中频低速ASK信号解调机的实现

The Realization of IF Low-speed ASK Signal Demodulator Based on RX3400

中频低速ASK信号解调机采用基于RX3400的差分检测解调,对中频输入信号进行放大、混频、解调,提高了设备的灵敏度;利用软件锁相环技术解决了信号相位抖动下的位同步提取关键技术。其特点在于:解决了传统解调手段通用性不强、价格昂贵、利用率不高等弊端,而且经济实用、操作简便,适用于各种中频低速2ASK信号。本文还介绍了ASK接收芯片RX3400的特性、解调原理,并给出了对该解调机进行测试的方法和结果。

The IF low-speed ASK signal demodulator using the differential detection demodulation based on RX3400,has improved the sensitivity of the equipment by amplification,mixing,demodulation on the IF input signal.And the use of the software phase-locked loop technology has solved the technologies key of bit synchronous extraction under the signal phase-locked loop phase jitter.Its characteristics are:Solved the disadvantages of the traditional demodulation method versatility not strongly,the price to be expensive, use factor not higher malpractice,moreover it was economical,the operation was simple,and it was suitable for each kind of IF low-speed 2ASK signal.This article also introduced the characteristic and the demodulation principle of the RX3400(ASK receive chip), and gaved the test methods and results to test this signal demodulator.