Title :
K band Gaussian beam oscillator
Author :
Kiyokawa, Masahiro ; Matsui, Toshiaki
Author_Institution :
Communications Research Laboratory, Ministry of Posts and Telecommunications, 4-2-1 Nukui-Kita, Koganei, Tokyo 184, JAPAN
Abstract :
A K band Gaussian beam oscillator, with a new quasi-optical resonator, is described. The resonator consists of a plane mirror substrate and a concave spherical mirror with a highly reflective, partially transparent region. A high Q factor, obtained by using this spherical mirror, results in a low phase noise of the oscillator and the output power is extracted from this region as a Gaussian beam. This oscillator also features that an active circuit is fabricated behind the resonator. The configuration is suitable for the integration with MMIC. The phase noise of the 25.5 GHz oscillator is determined to be less than ¿80 dBc/Hz at 100 kHz off carrier.
Keywords :
Active circuits; Coupling circuits; Dielectric substrates; Fabry-Perot; Millimeter wave technology; Mirrors; Oscillators; Phase noise; Power generation; Reflectivity;
Conference_Titel :
Microwave Conference, 1994. 24th European
Conference_Location :
Cannes, France
DOI :
10.1109/EUMA.1994.337231
