The behavior of simultaneous asynchronous oscillation in an oscillator consisting of an idler circuit, two resonant circuits and a cubic nonlinear element, is investigated experimentally.

Noise behavior of the injection locked IMPATT amplifier with antiphase self-injection is investigated experimentally. The noise performance of this amplifier, which has wider locking range and faster phase response than ordinary one's, is not at all inferior to that of ordinary one's.

This paper describes the method of applying the integral form of Maxwell's equations to the transmission-line network used in the spatial network method for the modeling of curved conductor surfaces. The techniques of dealing with the transmission-line network near cylindrical conductor surface are explained in detail. To compare exact solutions with computed values, a cylindrical cavity resonator is analysed. The resonant frequencies and unloaded Q's for the computed three modes are obtained with the error of about 1%. Moreover, applying this treatment to the waveguide with magnetron anodeshape cross section, a cutoff-constant is computed successfully. It is found that the treatment proposed in this paper can be used as the method for modeling of curved conductor surface in the spatial network method. It is also considered that this treatment can be extend to TLM method.