Title :
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
fDate :
5/1/2001 12:00:00 AM
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;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/7260.923028
