Title :
Frequency control method for microwave oscillators using straightedge MSW resonators
Author :
Koike, Takuro ; Hirao, Tatsuya ; Ito, Tomoyasu ; Nagano, Terufumi
Author_Institution :
Dept. of Electron. Eng., Tamagawa Univ., Machida, Japan
Abstract :
In this paper we discuss the effects of additional electrodes, fabricated near the center electrode of a magnetostatic wave (MSW) straightedge resonator, on the frequency shifts of the magnetostatic wave oscillator. Upon switching the p-i-n diodes on and off in the additional electrode circuits, the resonant frequency can be shifted without changing the external magnetic field and the circuit parameters of a feedback load circuit. We constructed oscillators using this technique and could observe shifts of oscillatory peaks as predicted by our equivalent circuit model. Some interesting features of the frequency shifts are also discussed
Keywords :
equivalent circuits; feedback oscillators; frequency control; magnetostatic wave devices; microwave oscillators; resonators; YFe5O12; YIG; equivalent circuit model; feedback load circuit; frequency control method; frequency shifts; magnetostatic wave oscillator; magnetostatic wave resonator; microwave oscillators; p-i-n diodes; resonant frequency shift; straightedge MSW resonators; Electrodes; Feedback circuits; Frequency control; Magnetic circuits; Magnetostatic waves; Microwave oscillators; Microwave theory and techniques; RLC circuits; Resonant frequency; Switching circuits;
Conference_Titel :
Frequency Control Symposium, 1996. 50th., Proceedings of the 1996 IEEE International.
Conference_Location :
Honolulu, HI
Print_ISBN :
0-7803-3309-8
DOI :
10.1109/FREQ.1996.560255
