Grid oscillators with selective-feedback mirrors

Author

Sun, Qi ; Horiuchi, Jason B. ; Haynes, Steven R. ; Miyashiro, Kevin W. ; Shiroma, Wayne A.

Author_Institution

Dept. of Electr. Eng., Hawaii Univ., Honolulu, HI, USA

Volume

46

Issue

12

fYear

1998

fDate

12/1/1998 12:00:00 AM

Firstpage

2324

Lastpage

2329

Abstract

Analytical and experimental results are presented that demonstrate the advantages of replacing the metal mirror of a C-band transistor-grid oscillator with two types of selective-feedback mirrors. The first mirror is a two-dimensional photonic crystal, whose frequency-, polarization-, and reflectivity-dependent characteristics result in higher radiated power, lower cross polarization, and improved locking. The second is a diode-loaded grating functioning as an electronically tunable mirror, which allows the oscillator to be amplitude-modulated

Keywords

amplitude modulation; arrays; electromagnetic wave reflection; equivalent circuits; feedback; microwave oscillators; mirrors; AM; C-band transistor-grid oscillator; amplitude modulation; diode-loaded grating; electronically tunable mirror; microwave grid oscillators; quasi-optical arrays; selective-feedback mirrors; two-dimensional photonic crystal; Dielectric substrates; Frequency; Gratings; Mirrors; Oscillators; Photonic crystals; Polarization; Reflectivity; Sun; Tunable circuits and devices;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.739218

Filename

739218