Referenced Items are not available for this document.
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 Ω at the input and better than 1.5:1 into 50 Ω at the output while maintaining a gain of 9±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±1 dB from 0.5 to 12.5 GHz and better than 10 dB return loss at both the input and output
Published in:
Microwave Theory and Techniques, IEEE Transactions on
(Volume:37
,
Issue:
12
)
Date of Publication: Dec 1989
- Page(s):
- 1870 - 1876
- ISSN :
- 0018-9480
- INSPEC Accession Number:
- 3606151
- Digital Object Identifier :
- 10.1109/22.44096
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 06 August 2002
- Issue Date :
- Dec 1989
- Sponsored by :
- IEEE Microwave Theory and Techniques Society
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