Design of New SAWDQPSK Matched Filter

作     者：LIU Ji-xue ZHONG Xian-xin 

作者机构：Key Laboratory of Optoelectronic Technology ＆ System for Ministry of Education Chongqing University Chongqing 400044 CHN Sichuan Institute of Piezoelectric ＆ Acoustooptic Technology Chongqing 400060 CHN 

出 版 物：《Semiconductor Photonics and Technology》 (半导体光子学与技术（英文版）)

年 卷 期：2006年第12卷第1期

页      面：35-38页

学科分类：080903[工学-微电子学与固体电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 

基　　金：National High Technology Research and Development Programof China(2002AA325040) 

主　　题：DQPSK Differential modulationt Spread spectrum SAW Matched filter 

摘      要：A new surface acoustic Wave differential quadraphase shift key（SAW DQPSK） spread spectrum （SS） signal matched filter based on the fusion of SS and differential modulation is reported. The design of multi-phase coded SAW matched filter is proposed rather than another design of SAW DQPSK filter, which can cut in a half of the delay time of SAW DQPSK matched filter and SAW fixed delay line（FDL） used for differential demodulation. This breakthrough is made the system largely reduce a size and process much easily. This method can also be feasible in other SAW MPSK matched filter design especially when the modulation phase number is larger than 4. The design example and its experimental results are given.