DocumentCode :
2759273
Title :
Ultra low noise low cost octave-band hybrid-tuned VCO
Author :
Rohde, Ulrich L. ; Poddar, Ajay K. ; Rebel, Reimund
Author_Institution :
Synergy Microwave Corp., Paterson, NJ
fYear :
2005
fDate :
1-4 May 2005
Firstpage :
831
Lastpage :
834
Abstract :
The application where coarse and fine-tuning is prime requirement, phase noise gets drastically degraded in presence of the fine tuning network if incorporated with a coarse tuning network. A VCO with a frequency that is less sensitive to tuning control voltage fluctuations imparts less phase jitter to the system, but suffers from a narrower tuning range, thereby it is limited by tuning band. This paper describes the unique approach of the hybrid tuning capability of the octave-band VCO (1000-2000 MHz/2000-4000 MHz) without sacrificing the phase noise and the tuning range. The design is based on innovative topology, which supports the fast convergence by using coarse-tuning and fine adjustments, by fine-tuning network. The measured phase noise is better than -103 dBc/Hz @ 10 kHz offset for the frequency band 1000-2000 MHz
Keywords :
UHF oscillators; circuit tuning; microwave oscillators; voltage-controlled oscillators; 1000 to 4000 MHz; coarse tuning network; fine-tuning network; octave-band hybrid-tuned VCO; phase noise; tuning control voltage fluctuations; ultra low noise low cost VCO; Control systems; Costs; Degradation; Frequency; Jitter; Phase noise; Tuning; Voltage control; Voltage fluctuations; Voltage-controlled oscillators;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electrical and Computer Engineering, 2005. Canadian Conference on
Conference_Location :
Saskatoon, Sask.
ISSN :
0840-7789
Print_ISBN :
0-7803-8885-2
Type :
conf
DOI :
10.1109/CCECE.2005.1557057
Filename :
1557057
Link To Document :
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