NDLI: Half frequency instability on a 1W bipolar part

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Proceedings RAWCON 2001. 2001 IEEE Radio and Wireless Conference (Cat.No.01EX514)

RAWCON 2000. 2000 IEEE Radio and Wireless Conference (Cat. No.00EX404)

RAWCON 99. 1999 IEEE Radio and Wireless Conference (Cat. No.99EX292)

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Half frequency instability on a 1W bipolar part

Content Provider	IEEE Xplore Digital Library
Author	Aimdilokwong, A. Weber, R.J.
Copyright Year	2002
Description	Author affiliation: Iowa State Univ., Ames, IA, USA (Aimdilokwong, A.; Weber, R.J.)
Abstract	Half frequency instability is investigated on a 1W bipolar part. The small signal scattering parameters are measured at 500 MHz while the bipolar part is operating at 1 GHz. The measurement is done over various drive levels ranging from linear to saturation regions of operation. An algorithm is used to calculate the small signal S-parameters at 500 MHz without having to present 50-ohm termination to the device but instead the optimum load at 1 GHz. This is significant because the microwave power transistor needs a suitable load termination (not a 50-ohm termination) in order to operate at that large signal level.
Sponsorship	IEEE Microwave Theory & Tech. Soc. (MTT-S) IEEE Boston Sect
Starting Page	169
Ending Page	171
File Size	210419
Page Count	3
File Format	PDF
ISBN	0780374584
DOI	10.1109/RAWCON.2002.1030144
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-08-11
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Atherosclerosis Scattering parameters Frequency measurement Tuners Impedance Power transistors Stability criteria Load management Signal analysis Reflection
Content Type	Text
Resource Type	Article

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