NDLI: Low-voltage, Crystal Controlled Comb Spectrum Oscillator for Injection Locked STW Based Clocks with Improved Stability

Content Provider	IEEE Xplore Digital Library
Author	Avramov, I.D.
Copyright Year	2006
Description	Author affiliation: Inst. of Solid State Phys., Sofia (Avramov, I.D.)
Abstract	This work presents the design and performance of a 100 MHz crystal controlled comb spectrum oscillator (CCCSO) which operates on 1.25V supply voltage according to the "step-up" converter principle and generates strong harmonics in the lower GHz range. The CCCSO is intended for improving the frequency stability and close-in phase noise of surface acoustic wave (SAW) and surface transverse wave (STW) oscillators by using an injection locking technique, thus making them as stable as a bulk acoustic wave (BAW) crystal oscillator. With -6 dBm of power at its 10-th harmonic, the CCCSO provides safe lock over a (-40 to +85) deg. C temperature range in a low-voltage 1 GHz STW oscillator with a loop power of 14 dBm, also operating according to the "step-up" converter principle. After injection locking, the short-term stability of the STW oscillator and its thermal stability improve by an order of magnitude as a result of BAW crystal stabilization in the CCCSO. The entire injection locked system is operated on 1.25V supply voltage, consumes 90 mA of DC current, generates 4 dBm of output power at 1 GHz and is expected to provide a thermal noise floor of -170 dBc/Hz
Starting Page	393
Ending Page	400
File Size	335280
Page Count	8
File Format	PDF
ISBN	1424400740
DOI	10.1109/FREQ.2006.275417
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-06-04
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Injection-locked oscillators Clocks Surface acoustic waves Acoustic waves Thermal stability Power generation Voltage control Voltage-controlled oscillators Frequency Phase noise phase noise injection locked oscillators STW resonators BAW crystals comb spectrum oscillators
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
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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