NDLI: A Colpitts-Type Crystal Oscillator for Gigahertz Frequency

Content Provider	IEEE Xplore Digital Library
Author	Nomura, N. Aoyagi, Y. Chao-kai Chang Asano, K. Sekine, Y.
Copyright Year	2006
Description	Author affiliation: Dev. & Design Manage. Div., EPSON TOYOCOM Corp., Fukushima (Nomura, N.; Aoyagi, Y.)
Abstract	Recent research shows that stable frequency is required to improve efficiency in the high frequency range. A high frequency oscillator has been required for the development of radio communications, measurement equipment, etc. Generally, the crystal oscillator is excellent in short-term frequency stability, and is being applied to telecommunication equipment, information technology, etc. On the other hand, the quartz resonator, which was developed for high frequency range, is aimed at being used in systems for the next generation. The quartz resonator with the high frequency range requires a steady oscillator to oscillate in high frequency range. Therefore, it is very difficult to use a Colpitts-type crystal oscillator in the high frequency range. It requires more negative resistance on the crystal oscillator circuit. In this paper, we suggest a method to decrease Miller capacitance of the transistor used for the conventional Colpitts-type crystal oscillator. Next, we show a new Colpitts-type crystal oscillator, which can obtain a negative resistance value in a gigahertz frequency band. Analyzing the equivalent circuit clarifies the effects of the proposed circuit compared to the conventional Colpitts-type crystal oscillator
Starting Page	233
Ending Page	236
File Size	371771
Page Count	4
File Format	PDF
ISBN	1424400740
DOI	10.1109/FREQ.2006.275386
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	Oscillators Capacitance Frequency conversion Circuit stability Research and development management Technology management Chaotic communication Educational institutions Radio communication Frequency measurement high frequency range Colpitts-type crystal oscillator negative resistance quartz resonator
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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