DocumentCode :
1219420
Title :
Waveguide Mixer Sum frequency Termination Considerations in an FM Communication System
Author :
Neidert, Robert E.
Author_Institution :
General Electric Co., Lynchburg, VA
Volume :
16
Issue :
2
fYear :
1968
fDate :
4/1/1968 12:00:00 AM
Firstpage :
279
Lastpage :
282
Abstract :
In a 6-GHz FM communications system using a mixer with its diode mounted in waveguide, group delay and linearity anomalies were observed which resulted in serious degradation of intermodulation signal-to-noise performance. This paper describes the problem, presents the reasoning and the laboratory tests by which improper termination of the mixergenerated sum frequency was isolated as its source, and describes a waveguide sum frequency absorber located at the mixer to solve the problem. The necessity of giving attention to all the signals generated in a nonlinear device in waveguide is discussed in this paper and has application to all such components in FM systems.
Keywords :
Degradation; Delay lines; Diodes; Frequency; Laboratories; Linearity; Propagation delay; Signal generators; Testing; Waveguide components;
fLanguage :
English
Journal_Title :
Communication Technology, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9332
Type :
jour
DOI :
10.1109/TCOM.1968.1089829
Filename :
1089829
Link To Document :
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