Title :
Grid oscillators with photonic-crystal reflectors
Author :
Qi Sun ; Miyashiro, K.W. ; Horiuchi, J.B. ; Shiroma, W.A.
Author_Institution :
Dept. of Electr. Eng., Hawaii Univ., Honolulu, HI, USA
Abstract :
The frequency-, polarization-, and reflectivity-dependent properties of photonic crystals are exploited to improve the performance of a grid oscillator. The metal reflector of a C-band grid is replaced with a photonic-crystal reflector, resulting in a higher cross-polarization ratio, higher radiated power, lower harmonic content, and improved start-up conditions.
Keywords :
HEMT circuits; crystals; dielectric devices; electromagnetic wave polarisation; electromagnetic wave reflection; microwave oscillators; reflectivity; C-band grid; cross-polarization ratio improvement; frequency-dependent properties; grid oscillators; harmonic content reduction; periodic dielectric structure; photonic crystals; photonic-crystal reflectors; polarization-dependent properties; radiated power; reflectivity-dependent properties; start-up conditions; Dielectrics; Frequency; Mirrors; Optical devices; Oscillators; Permittivity; Photonic crystals; Polarization; Power system harmonics; Substrates;
Conference_Titel :
Microwave Symposium Digest, 1998 IEEE MTT-S International
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
0-7803-4471-5
DOI :
10.1109/MWSYM.1998.700861
