Industry News

A Direct 64-QAM Modulator Suitable for MMIC Implementation

A 64-quadrature amplitude modulation (QAM) modulator that achieves greater than 25 percent operating bandwidth while maintaining vector errors at less than 10 percent
A Direct 64-QAM Modulator Suitable for MMIC Implementation Surinder Kumar, Abbas Mohammadi and David Klymyshyn Telecommunications Research Labs (TRLabs) and University of Saskatchewan Saskatoon, Saskatchewan, Canada There is considerable worldwide interest in personal communications services (PCS) with wireless data communication. Spectrum allocation for such services has been made and...
Read More

Design and Characterization of a Multipurpose PCS Class A Amplifier/April 97

A multistage PCS class A amplifier design that applies GaAs surface-mount MMICs as preamplifiers and silicon bipolar power transistors in power stages
Design and Characterization of a Multipurpose PCS Class A Amplifier E. James Crescenzi, Jr. and Walter A. Strifler Watkins-Johnson Co., Microwave Products Group Palo Alto, CA The rapid expansion of personal communications service (PCS) base stations and services has resulted in an increased demand for linear power amplifiers in...
Read More

Around the Circuit

Around the Circuit Industry News Commercial and defense electronic supplier Raytheon Co. has entered into a definitive agreement to merge with Hughes Aircraft, Hughes Electronics Corp. 's defense operations. The consolidated company will be known as Raytheon Co. and will have headquarters based in Raytheon's Lexington, MA facility. The...
Read More

New Literature

New Literature Chip Attenuator Catalog This catalog provides information on chip attenuator application, as well as the company's capabilities, including photolithography, etching, dicing/sawing, plating, assembly, and consulting and design. Specifications are listed. Performance graphs are provided. DAV Technology, Tyngsborough, MA (508) 649-4231. Structural Adhesive Selector Guide This selector guide...
Read More

News from Washington

News from Washington Sanders Receives Navy Multifunction Antenna Contract Sanders, a Lockheed Martin company, has received an $8.9 M contract from the US Navy for the advanced technology demonstration concept phase of the multifunction electromagnetic radiating system program. Terms of the contract call for Sanders to design, develop and...
Read More

International Report

International Report Philips to Expand Wafer Fabrication and Launches CD-ROM Processor Netherlands contractor Philips Semiconductors is investing an additional $15 M in discrete wafer fabrication at its Nijmegen, Holland plant in order to meet the anticipated demand for fifth-generation wideband RF transistors. Billed as Europe's largest semiconductor plant, the...
Read More

Commercial Market

The Commercial Market Motorola Awards Cover GSM Network Expansions in China and UAE Motorola's Asia Pacific Cellular Infrastructure Group has signed a $15 M contract with the Beijing Telecommunications Administration (BTA) for the expansion of the Global System for Mobile communications (GSM) network in Beijing, China. This fourth phase...
Read More

The Book End

The Book End Green's Function, Finite Elements and Microwave Planar Circuits J. Helszajn John Wiley & Sons Ltd. 259 pages; $65 Applying Green's function to planar microwave circuits is well accepted as a fundamental tool in electromagnetic analysis. This book presents comprehensive and detailed methods for describing practical microwave...
Read More

A Portable Rubidium Reference Timebase Generator

A rubidium reference timebase generator featuring a lightweight, portable configuration for use in the field at a reasonable cost
A Portable Rubidium Reference Timebase Generator United Computer and Telecommunication Inc. (UCT) Irvine, CA With today's sophisticated communications systems comes the need for better frequency accuracy, control and correlation. Rubidium-based frequency and time standards have been the ultimate accurate signal source for laboratory use, but these instruments have not...
Read More

A Wideband Synthesized Test Translator

A test translator developed to simulate transmission paths for direct-broadcast satellite systems and as a test source in other wireless applications
A Wideband Synthesized Test Translator A new wideband synthesized test translator has been developed to simulate the transmission paths for direct-broadcast satellite (DBS) systems and to automate testing of set-top boxes used in broadband wireless applications. The model UC-140/1485-003 test translator provides a convenient way to characterize DBS systems...
Read More
See More Videos