Title :
Voltage controlled oscillators with planar MSW resonators
Author :
Ito, K. ; Murakami, Y. ; Takeda, S. ; Kinoshita, Y. ; Kubota, S. ; Tanaka, M.
Author_Institution :
Hitachi Metals, Ltd., Japan
Abstract :
A 5-GHz-band voltage-controlled oscillator has been developed using a planar MSW (magnetostatic wave) resonator. The magnetic circuit has been designed using a finite element method and an NdFeB magnet, which well compensates the temperature dependence of the MS forward volume wave. The impedance matching of planar MSW resonators to a negative-resistance circuit is discussed. The developed MSW-voltage-controlled oscillators satisfy the requirements of a portable TV link. The output frequency can be linearly tuned over a 1-GHz span and the phase noise is better than -115 dBc/Hz at 100 kHz off-carrier through the tunable range. some practical points such as size, power consumption, and stability under temperature variation and mechanical vibration are also considered
Keywords :
magnetostatic wave devices; surface acoustic wave devices; 1 GHz; 100 kHz; 5 GHz; 5-GHz-band voltage-controlled oscillator; MS forward volume wave; NdFeB magnet; finite element method; impedance matching; magnetic circuit; mechanical vibration; negative-resistance circuit; phase noise; planar MSW resonators; portable TV link; power consumption; size; stability; temperature variation; Finite element methods; Frequency; Impedance matching; Magnetic circuits; Magnetostatic waves; Phase noise; TV; Temperature dependence; Tunable circuits and devices; Voltage-controlled oscillators;
Conference_Titel :
Ultrasonics Symposium, 1989. Proceedings., IEEE 1989
Conference_Location :
Montreal, Que.
DOI :
10.1109/ULTSYM.1989.67002
