DocumentCode
2066198
Title
Design of Series Feedback Millimeter Wave Oscillators employing Whispering Gallery Mode Dielectric Resonators
Author
Gross, Walter ; Glandorf, Franz-Josef
Volume
1
fYear
1992
fDate
5-9 Sept. 1992
Firstpage
491
Lastpage
496
Abstract
Design and performance of millimeter wave oscillators at 36.5 GHz and 44.5 GHz employing Whispering Gallery Mode Dielectric Resonators (WGMDR) and commercially available HEMTs are presented. A special microstrip coupling circuit has been developed for the WGMDR. This coupling avoids the mode splitting of the degenerate Whispering Gallery Modes and also avoids out of band instabilities in a series feedback oscillator. Two oscillators at 36.5GHz employing a WGE7,0,0 mode resonator and at 44.5 GHz employing a WGE9,0,0 mode resonator have been designed. High output power(> 7dBm) and efficiency (10%) have been achieved for both oscillators.
Keywords
Coupling circuits; Dielectrics; Feedback; HEMTs; MODFETs; Microstrip; Millimeter wave circuits; Oscillators; Power generation; Whispering gallery modes;
fLanguage
English
Publisher
ieee
Conference_Titel
Microwave Conference, 1992. 22nd European
Conference_Location
Helsinki, Finland
Type
conf
DOI
10.1109/EUMA.1992.335714
Filename
4135497
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