Microwave Journal is a publication in the field of computers and technology offering news and analysis about electrical engineering. 

The Technology Voice of the Wireless World; featuring the latest in technical information, special reports, new product information and news.

For more than 43 years, Microwave Journal has maintained an editorial balance between theory, practical uses, applications and news with our technical coverage of the RF, microwave, and wireless industries.

COVER FEATURE: THEN AND NOW
22 The Look Forward in Microwave Plumbing for Systems Applications
Tore N. Anderson, Airtron Inc.
First published in July/August of 1958, this article discussed the application of new microwave ferrite components to missile guidance radar, tracking antennas and microwave relays

66 An Enabling New 3D Architecture for Microwave Components and Systems
Zoya Popovi´c, Sébastien Rondineau and Dejan Filipovi´c, University of Colorado; David Sherrer, Chris Nichols, Jean-Marc, Rollin and Ken Vanhille, Rohm and Haas Electronic Materials
Introduction to a manufacturing technology designed to produce 3D metallic-dielectric components to go directly from 3D CAD drawings to 3D miniature circuit components

88 Design of a Microwave Group Delay Time Adjuster and Its Application to a Feedforward Power Amplifier
Heungjae Choi and Yongchae Jeong, Chonbuk National University; J.S. Kenney, Georgia Institute of Technology;
Chul Dong Kim, Sewon Teletech Inc.
Design, fabrication and measurement of a microwave group delay time adjuster and base station feedforward power amplifier

104 High Efficiency Broadband Power Amplifiers
F.J. Ortega-Gonzalez, J.M. Pardo-Martin, A. Gimeno-Martin and C.B. Peces, Universidad Politécnica de Madrid
Use of load pull design techniques and synthesis of broadband load networks in the design of broadband high efficiency power amplifiers

120 Design of a CPW-fed Printed Antenna for Ultra-wideband Applications
Wen-Shan Chen and Kai-Cheng Yang, Southern Taiwan University
Presentation of a compact, low profile planar rectangle-semicircle-rectangle antenna for ultra-wideband applications

132 A 5 GHz RFIC Single Chip Solution in GaInP/GaAs HBT Technology
Chin-Chun Meng and Tzung-Han Wu, National Chiao Tung University
Design and implementation of several radio frequency integrated circuit building blocks using 2 μm GaInP/GaAs heterojunction bipolar transistor technology

144 Extracting a Nonlinear Electro-thermal Model for a GaN HFET
Andrew Edwards, Bernard Geller and Isik C. Kizilyalli, Nitronex Corp.
Description of a procedure used to extract a nonlinear model for a gallium nitride power heterostructure field-effect transistor

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STAFF:

PUBLISHER: CARL SHEFFRES
ASSOCIATE PUBLISHER: EDWARD JOHNSON
MANAGING EDITOR: KEITH W. MOORE
TECHNICAL EDITOR: DAVID VYE
TECHNICAL EDITOR: FRANK M. BASHORE
ASSOCIATE TECHNICAL EDITOR: DAN MASSÉ
STAFF EDITOR: JENNIFER DIMARCO
EDITORIAL ASSISTANT: BARBARA WALSH
CONSULTING EDITOR: HOWARD I. ELLOWITZ
CONSULTING EDITOR: PETER STAECKER
CONSULTING EDITOR: DAN SWANSON
WEB EDITOR: SAMANTHA MAZZOTTA
TRAFFIC MANAGER: EDWARD KIESSLING
TRAFFIC ADMINISTRATOR: KEN HERNANDEZ
DIRECTOR OF PRODUCTION & DISTRIBUTION:
ROBERT BASS
MULTIMEDIA DESIGNER: GREG LAMB
WEB SITE PRODUCTION DESIGNER:
MICHAEL O’BRIEN
DTP COORDINATOR: JANET A. MACDONALD

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Microwave Journal (USPS 396-250) (ISSN 0192-6225) is published monthly by Horizon House Publications Inc., 685 Canton St., Norwood, MA 02062. Periodicals postage paid at Norwood, MA 02062 and additional mailing offices.

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