NDLI: Broad-band distributed amplifier impedance-matching techniques

Content Provider	IEEE Xplore Digital Library
Author	Cioffi, K.R.
Copyright Year	1963
Abstract	A circuit concept is developed which allows impedance transformations to be performed over extremely broad bandwidths. The transformation is obtained by coupling one or more input or output lines of a distributed amplifier into several output or input lines, respectively. The circuit technique is demonstrated by results for an amplifier for a 1:2 impedance transformation over a 2-20-GHz bandwidth. The amplifier yields a voltage standing wave ratio (VSWR) of better than 1.7:1 into 25 Omega at the input and better than 1.5:1 into 50 Omega at the output while maintaining a gain of 9+or-1 dB. An application of the technique to the broadband impedance-matching problem of a laser diode driver is discussed. The circuit has a gain of 8.5+or-1 dB from 0.5 to 12.5 GHz and better than 10 dB return loss at both the input and output.<>
Sponsorship	IEEE Microwave Theory and Techniques Society
Starting Page	1870
Ending Page	1876
Page Count	7
File Size	684415
File Format	PDF
ISSN	00189480
Volume Number	37
Issue Number	12
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1989-12-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Distributed amplifiers Impedance Bandwidth Transmission line theory Power transmission lines Capacitance Diode lasers Microwave circuits Distributed parameter circuits Inductance
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering Radiation

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