基于声表面波延迟线的相位解调器设计  

Design of Phase Demodulator Based on Surface Acoustic Wave Delay Line

作　　者：郑泽渔[1] 黄松 陈正林 ZHENG Zeyu;HUANG Song;CHEN Zhenglin(The 26th Institute of China Electronics Technology Group Corporation,Chongqing 400060,China;School of Information Science and Technology,Northwest University,Xi’an 710127,China)

机构地区：[1]中国电子科技集团公司第二十六研究所,重庆400060 [2]西北大学信息科学与技术学院,陕西西安710127

出　　处：《压电与声光》2023年第3期338-341,共4页Piezoelectrics & Acoustooptics

摘　　要：该文提出了一种基于声表面波延迟线的相位解调器,其原理是利用声表面波延迟线将调相信号转换为调幅信号,并采用“延迟相加”的方法进行解调。该延迟线实现了频率2.695~3.000 GHz内1μs的延迟时间,解调器可以实现调制速率为500 kHz和1 MHz的二进制相移键控(BPSK)调制信号的解调。In this paper,a phase demodulator based on surface acoustic wave(SAW)delay line is proposed.The basic idea is to demodulate a phase-modulated signal using the"delay addition"method after converting it to an amplitude-modulated(ASK)signal using a SAW delay line.The delay line achieves a delay time of 1μs in the frequency range of 2.695 GHz to 3.00 GHz,and the proposed demodulator can demodulate BPSK-modulated signals with modulation rates of 500 kHz and 1 MHz.

关 键 词：解调器 表面延迟线 二进制相移键控 延迟相加 声电转换 

分 类 号：TN65[电子电信—电路与系统]