NDLI: Mode-coupled stubs-tuned planar resonator based spectral pure signal source for wireless communication systems

Content Provider	IEEE Xplore Digital Library
Author	Rohde, U.L. Poddar, A.K.
Copyright Year	2007
Description	Author affiliation: Univ. of Cottbus, Cottbus (Rohde, U.L.)
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.
Starting Page	1
Ending Page	5
File Size	3853250
Page Count	5
File Format	PDF
ISBN	9781424424832
DOI	10.1109/SARNOF.2007.4567305
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-04-30
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wireless communication Phase noise Voltage-controlled oscillators Ceramics Surface acoustic waves Integrated circuit noise Planar transmission lines Transmission line measurements Frequency measurement Noise measurement VCO CCPR IC Q SAW
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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