Accession Number : AD0860059

Title :   UHF RF Preselector Study.

Descriptive Note : Interim development rept. 3 Jun-15 Sep 69,

Corporate Author : COLLINS RADIO CO CEDAR RAPIDS IA

Personal Author(s) : Hanson, Russell W. ; Russell, Steve F. ; Hallock, David B.

Report Date : 03 OCT 1969

Pagination or Media Count : 57

Abstract : A theoretical analysis of superheterodyne design principles is presented with emphasis on noise figure, selectivity trade-off, spurious response, and image phasing mixers. Magnetically tunable filters were examined on a theoretical and practical basis. Problems associated with uhf microminiaturization are discussed. Examination of varactor tuning techniques, and a consideration of large signal effects are presented. Distributed and active inductors and their relative advantages and disadvantages are presented. Distortion and low-noise performance of FET and switching mixers are presented with comparisons of dynamic range. (Author)

Descriptors :   (*TUNED AMPLIFIERS, ULTRAHIGH FREQUENCY), (*RADIO RECEIVERS, TUNED AMPLIFIERS), RADIOFREQUENCY AMPLIFIERS, RADIOFREQUENCY FILTERS, TUNING DEVICES, VARACTOR DIODES, COILS, FIELD EFFECT TRANSISTORS, CRYSTAL MIXERS, MICROELECTRONICS.

Subject Categories : Electrical and Electronic Equipment
      Radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE