DocumentCode :
3490322
Title :
Optimizing MMIC reflection-type oscillators
Author :
Lenk, E. ; Schott, M. ; Hilsenback, J. ; Heinrich, W.
Author_Institution :
Ferdinand-Braun-Inst. fur Hochstfrequenztechnik, Berlin, Germany
Volume :
3
fYear :
2004
fDate :
6-11 June 2004
Firstpage :
1341
Abstract :
In this paper, optimization of the loaded quality factor QL for reflection-type HBT oscillator is investigated. Main result is an optimum relation between the S parameter phases at the three transistor ports. To support this finding, a 35.5 GHz MMIC VCO phase noise better than -85 dBc/Hz at 100 kHz offset frequency is demonstrated.
Keywords :
MMIC; S-parameters; circuit optimisation; heterojunction bipolar transistors; microwave oscillators; voltage-controlled oscillators; 100 kHz; 35.5 GHz; HBT oscillator; MMIC VCO; S parameter phases; heterojunction bipolar transistors; loaded quality factor; microwave oscillators; phase noise; reflection-type oscillators; transistor ports; voltage controlled oscillators; Circuits; Frequency; Heterojunction bipolar transistors; Impedance; MMICs; Microwave devices; Microwave oscillators; Phase noise; Q factor; Voltage-controlled oscillators;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Microwave Symposium Digest, 2004 IEEE MTT-S International
ISSN :
0149-645X
Print_ISBN :
0-7803-8331-1
Type :
conf
DOI :
10.1109/MWSYM.2004.1338816
Filename :
1338816
Link To Document :
https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=3490322
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