A 2-watt balanced power amplifier MMIC for Ku-band satellite communications

A Ku-band power amplifier MMIC has been developed using 0.25-mum GaAs pHEMT technology. To achieve small chip size and simple drain-bias connection, a bus-bar power combiner is used. Also, balanced-power amplifier topology is used to obtain good input/ output return losses. The small-signal gain is about 15 dB and the gain variation is less than 1 dB from 12 to 17 GHz. Good input/output return losses are achieved at less than -15 dB due to the balanced topology. P-IdB of 32.6 dBm and PAE of 23.5% are achieved at 14 GHz. The effective chip area is 4.2 X 3.2 mm. Because the power amplifier is implemented using the balanced topology with the bus-bar power combiner, compact size, high output power, and good input/output return losses can be achieved simultaneously. (C) 2004 Wiley Periodicals, Inc.
Publisher
JOHN WILEY & SONS INC
Issue Date
2004-08
Language
ENG
Citation

MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, v.42, no.4, pp.342 - 344

ISSN
0895-2477
DOI
10.1002/mop.20297
URI
http://hdl.handle.net/10203/3741
Appears in Collection
EE-Journal Papers(저널논문)
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