Title :
Analytic design of high efficiency harmonic loading oscillator using harmonic two signal method
Author :
Moon-Que Lee ; Sangwook Nam ; Youngwoo Kwon ; Kyung-Whan Yeom
Author_Institution :
Appl. Electromagn. Lab., Seoul Nat. Univ., South Korea
Abstract :
A 61% DC-to-RF conversion efficiency oscillator with very low bias of 2.0 V is designed in 1.86 GHz. To obtain maximum DC-to-RF conversion efficiency, DC operating point is chosen in class AB with the second harmonic loading. The maximum efficiency and output power are analyzed and predicted very fast through a novel HTSM (Harmonic Two Signal Method) under class AB or B bias condition. Harmonic components effects on the oscillators, self-oscillating condition, and DC current change as the RF drive level are also analyzed through HTSM.
Keywords :
microwave oscillators; network synthesis; 1.86 GHz; 2.0 V; 61 percent; DC-to-RF conversion efficiency; class AB bias; class B bias; design; harmonic two signal method; oscillator; output power; second harmonic loading; Design methodology; Harmonic analysis; Microwave oscillators; Power amplifiers; Power generation; Power system harmonics; Radio frequency; Radiofrequency amplifiers; Signal analysis; Signal design;
Conference_Titel :
Microwave Symposium Digest, 1997., IEEE MTT-S International
Conference_Location :
Denver, CO, USA
Print_ISBN :
0-7803-3814-6
DOI :
10.1109/MWSYM.1997.596613
