WIDE BAND ELECTRONICALLY TUNABLE FILTERS.
Technical note no. 3, 1 Feb-31 May 63,
WATKINS-JOHNSON CO PALO ALTO CALIF
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Progress on YIG nonreciprocal filters at 1 to 18 gc is discussed. Four-stage, bandpass filters at X- and Ku-bands are nearing completion. Twostage, bandpass filters at L-, S- and C-bands are in various stages of completion. A three-stage band-reject filter at X-band is nearing completion while band-reject filters at L-, S- and C-bands are in various stages of completion. A power supply to sweep the filters has been designed and constructed. Author