NDLI: 2 GHz surface transverse wave oscillators, design, performance and limitations

Content Provider	IEEE Xplore Digital Library
Author	Avramov, I.D. Aliev, V.S. Denissenko, S. Kozlov, A.S.
Copyright Year	1995
Description	Author affiliation: Inst. of Solid State Phys., Sofia, Bulgaria (Avramov, I.D.)
Abstract	The current state-of-the-art for 2 GHz resonant devices and stable microwave oscillators using surface transverse waves (STW) is presented. Single mode low-Q resonators with an unmatched insertion loss of 4.85 dB, high-Q extended cavity resonators with an unloaded B of 3800 and an insertion loss of 10 dB, as well as 2-pole coupled resonator filters with a 3 dB bandwidth of 4 MHz and an insertion loss within 10 dB are described and characterized in detail. It is shown that the major loss mechanism in STW resonators, operating in the 2 GHz range, is the ohmic loss limiting the maximum achievable unloaded Q to about 75% of the material Q for SAW at this frequency. High-performance feedback oscillators are designed in a straight forward procedure using transistor and STW device S-parameters. Both stripline and lumped component designs provide elegant solutions to miniature 2 GHz oscillators with a temperature stability within 100 ppm over a (-20...+70) deg. C range and an output power in excess of +21 dBm.
Starting Page	459
Ending Page	468
File Size	802450
Page Count	10
File Format	PDF
ISBN	0780325001
DOI	10.1109/FREQ.1995.483935
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1995-05-31
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Surface waves Insertion loss Microwave oscillators Resonance Microwave devices Cavity resonators Resonator filters Bandwidth Surface acoustic waves Frequency
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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