DocumentCode :
2170468
Title :
Mode-coupled stubs-tuned planar resonator based spectral pure signal source for wireless communication systems
Author :
Rohde, U.L. ; Poddar, Ajay K.
Author_Institution :
Univ. of Cottbus, Cottbus
fYear :
2007
fDate :
April 30 2007-May 2 2007
Firstpage :
1
Lastpage :
5
Abstract :
A novel compact coupled planar resonator (CCPR) based VCO (voltage controlled oscillator) using mode-coupling technique was developed in response to expensive high Ceramic and SAW resonators based signal source for wireless communications. One of the problems related to the conventional Ceramic/SAW based resonators (with high Q and low phase noise) is the challenge for integration in IC form. Instead of employing the distributed planar uncoupled transmission line resonator for integration that exhibits low Q and high phase noise, this work describes a CCPR based VCO that supports user-definable frequency band in compact size and amenable for integration in the IC form. The measured phase noise for a carrier frequency 622 MHz is better than -135 dBc/Hz at 10 kHz offset, and to our knowledge, this is the best phase noise performance for this class of VCOs using printed resonator in 0.5´times0.5´ circuit board size so far reported. The reported topology is not limited to this frequency, can be extended for other higher frequency by incorporating mode-injection stubs across the CCPR for desired operating frequency.
Keywords :
phase noise; radio networks; resonators; surface acoustic waves; voltage-controlled oscillators; SAW resonators; VCO; distributed planar uncoupled transmission line resonator; high ceramic resonators; mode-coupled stubs-tuned planar resonator; printed resonator; spectral pure signal source; voltage controlled oscillator; wireless communication systems; Ceramics; Frequency measurement; Integrated circuit noise; Noise measurement; Phase noise; Planar transmission lines; Surface acoustic waves; Transmission line measurements; Voltage-controlled oscillators; Wireless communication; CCPR; IC; Q; SAW; VCO;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Sarnoff Symposium, 2007 IEEE
Conference_Location :
Nassau Inn, Princeton, NJ
Print_ISBN :
978-1-4244-2483-2
Type :
conf
DOI :
10.1109/SARNOF.2007.4567305
Filename :
4567305
Link To Document :
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