NDLI: Split gate line distributed power amplifier using tapered drain line approach and active broadband input power divider

Content Provider	IEEE Xplore Digital Library
Author	Ciccognani, W. Giolo, G. Limiti, E. Longhi, P.E.
Copyright Year	2009
Description	Author affiliation: Elettronica Spa Via Tiburtina Valeria Km 13,700 - 00131 Roma (ITALY) (Giolo, G.; Longhi, P.E.) \|\| Electronic Engineering Department, University of Roma Tor Vergata Via del Politecnico 1, - 00133 Roma (ITALY) (Ciccognani, W.; Limiti, E.)
Abstract	In this contribution the analysis, design and results of a distributed power amplifier for ultra wideband operation are presented. The tapered drain line, capacitive coupling and split gate line techniques have been simultaneously applied to obtain a high-performance MMIC design. The power amplifier exhibits a P.A.E. higher than 27% and a constant output power in the region of 36dBm at 3dB gain compression. The small signal gain is 21dB; all values are considered over the 2–8GHz bandwidth. The drain line impedance tapering technique is shown to significantly increase the efficiency and output power of a distributed amplifier while the capacitive coupling and split gate line technique are applied to obtain constant electrical performance over the requested frequency bandwidth. Finally the choice of selecting an active power divider, acting as a first stage gain section, greatly improves the overall MMIC's gain behaviour.
Starting Page	1425
Ending Page	1428
File Size	158477
Page Count	4
File Format	PDF
ISBN	9781424447480
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-09-29
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	EUMA
Subject Keyword	Broadband amplifiers Distributed amplifiers Power amplifiers Power dividers MMICs Power generation Bandwidth Operational amplifiers Ultra wideband technology High power amplifiers
Content Type	Text
Resource Type	Article

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