| || 8 GHz Tunable Gunn Oscillator in WR 137 Waveguide
Author : Nag, B.R. ;Saha, P.K.;Ghosh, G.;Rakshit, P.C.
Source : Defence Science Journal ; Vol:33(1) ; 1983 ; pp 1-5
Subject : 621.38 Electronics
Keywords : Coaxial mode ;Gunn diode;Waveguide
Abstract : The conventional technique of relising waveguide resonators for Gunn diode oscillators to operate at the band edge of the waveguide fails owing to the excitation of a coaxial mode resonance formed by the post and the side walls of the waveguide. One of the solutions to the problem is to mount the diode in a ridged waveguide resonator. This has been demonstrated by constructing an 8 GHz Gunn oscillator using a single ridge in WR-137 waveguide. The steps in designing the oscillator system are also presented.