Novel oscillator incorporating a compact microstrip resonant cell

Author

Xue, Quan ; Shum, Kam Man ; Chan, Chi Hou

Author_Institution

Dept. of Electron. Eng., City Univ. of Hong Kong, Kowloon, Hong Kong

Volume

11

Issue

5

fYear

2001

fDate

5/1/2001 12:00:00 AM

Firstpage

202

Lastpage

204

Abstract

A novel transistor oscillator incorporating a compact microstrip resonant cell (CMRC) as its terminating resonance is proposed. Adjusting the dimensions of the cell, it is possible that the fundamental frequency can be positively fed back and the second harmonic negatively fed back at the input port of the oscillator. The fundamental output is enhanced with the second harmonic being suppressed. The output power of the proposed CMRC oscillator is 14.7 dBm at 2.5 GHz with 27.1 dB rejection of the second harmonic, outperforming the conventional microstrip termination with a 40% size reduction.

Keywords

microstrip circuits; microstrip resonators; microwave oscillators; microwave photonics; photonic band gap; 2.5 GHz; compact microstrip resonant cell; fundamental frequency; input port; microwave transistor oscillator; output power; photonic bandgap structures; second harmonic; size reduction; terminating resonance; Capacitance; Circuit testing; Dielectric constant; Frequency; Microstrip; Microwave oscillators; Photonic band gap; Power harmonic filters; Resonance; Scattering parameters;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/7260.923028

Filename

923028