SPECTRUM SHAPING SAW FILTERS FOR HIGH-BIT-RATE DIGITAL RADIO

被引：6
作者：
GANSSPUCHSTEIN, R [1 ]
RUPPEL, C [1 ]
STOCKER, HR [1 ]
机构：
[1] SIEMENS AG,SAW RES LAB,D-8000 MUNICH 83,FED REP GER
来源：
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL | 1988年 / 35卷 / 06期
关键词：
Digital Communication Systems - Mathematical Techniques--Transfer Functions - Modems - Probability - Radio Interference--Crosstalk;
D O I：
10.1109/58.9323
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
The structure of a QAM radio system is explained. Some novel designs that demonstrate the current status of spectral shaping SAW (surface acoustic wave) filters are presented. Compensation of second-order effects is discussed. Experimental results for a filter for a 140-Mb/s 16 QAM cochannel system with a roll-off factor of 0.19 are shown. Two other examples of filters for a 140-Mb/s, 64 QAM system with a 35% relative bandwidth are also presented.
引用
收藏
页码：673 / 684
页数：12
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