A broad-band amplifier using GaAs/GaAlAs heterojunction bipolar transistors
A compact wideband amplifier (or gain block) designed around a Darlington pair of GaAs/GaAlAs heterojunction bipolar transistors (HBTs) is discussed. This circuit has been fabricated by an ion-implanted process with a transistor f/sub t/ of 40 GHz. Two variants of the circuit gave either a 8.5-dB ga...
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Published in | IEEE journal of solid-state circuits Vol. 24; no. 3; pp. 686 - 689 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
New York, NY
IEEE
01.06.1989
Institute of Electrical and Electronics Engineers |
Subjects | |
Online Access | Get full text |
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Summary: | A compact wideband amplifier (or gain block) designed around a Darlington pair of GaAs/GaAlAs heterojunction bipolar transistors (HBTs) is discussed. This circuit has been fabricated by an ion-implanted process with a transistor f/sub t/ of 40 GHz. Two variants of the circuit gave either a 8.5-dB gain with a DC-to-5-GHz 3-dB bandwidth or a 13-dB gain with a DC-to-3-GHz bandwidth. These amplifiers gave 11.8- and 18.3-dBm output, respectively, at 1-dB gain compression.< > |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 0018-9200 1558-173X |
DOI: | 10.1109/4.32026 |