Title :
A compact-size microstrip spiral resonator and its application to microwave oscillator
Author :
Lee, Young-Taek ; Lim, Jong-Sik ; Kim, Chul-Soo ; Ahn, Dal ; Nam, Sangwook
Author_Institution :
Appl. Electromagn. Lab., Seoul Nat. Univ., South Korea
Abstract :
This letter presents a compact size microstrip spiral resonator and its application to a low phase noise oscillator. This resonator has stopband characteristics to be used in the series feedback oscillator topology. The whole circuit area of the proposed resonator is within 1/10 wavelength, which results in the reduction of the circuit area and cost. A 10-GHz oscillator incorporated with this resonator was designed, fabricated and measured. It shows low phase noise performance of -95.4-dBc/Hz at 100 kHz offset.
Keywords :
circuit noise; feedback oscillators; microstrip resonators; microwave oscillators; phase noise; 10 GHz; 10-GHz oscillator; 9.998 GHz; NE32484 HEMT device; X-band oscillator; circuit area reduction; compact-size microstrip spiral resonator; cost reduction; hybrid technique; low phase noise oscillator; low phase noise performance; microwave oscillator; resonator circuit area; series feedback oscillator topology; stopband characteristics; Costs; Coupling circuits; Equivalent circuits; Laboratories; MMICs; Microstrip resonators; Microwave oscillators; Phase noise; Q factor; Spirals;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2002.804556
