Frequency Compression of Wideband Signals Using a Distributed Sampling Technique

摘要

Present methods of frequency conversion include heterodyne conversion and harmonic or subharmonic generation. These methods have inherent limitations which restrict their usefulness in a number of applications. A novel frequency compression/expansion system which makes use of sampling techniques is not confined to the same limitations as these conventional frequency conversion systems. The unique integration of delay lines, sampling gates and amplifiers permits frequency compression or expansion as well as amplification of wideband pulsed r.f. signals at frequencies far above the cut-off frequencies of the amplifying devices used. The theory and design of the frequency compression/expansion system is presented in this report. The theoretical results are compared with those obtained from an experimental system and good agreement is demonstrated. (Author)