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Industry News

A Sub 1 W Load-pull Quarter-wave Prematching Network Based on a Two-tier TRL Calibration

A vector network analyzer error-correction characterization technique based on a two-tier calibration using 7 mm and microstrip thru-reflect-line (TRL) calibrations
A Sub 1 W Load-pull Quarter-wave Prematching Network Based on a Two-tier TRL Calibration Transistors used for cellular and PCS infrastructure applications are required to amplify signals with a peak-to-average ratio that can exceed 13 dB, resulting in a peak envelope power (PEP) approaching 1 kW. This PEP requirement...
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Miniaturized Low Cost 30 GHz Monolithic Balanced BPSK and Vector Modulators: Part 1

The advantages of using direct carrier modulation at mm-wave frequencies as well as the active device characterization and detailed circuit analysis of both single-stage and balanced modulators
Technical Feature Miniaturized Low Cost 30 GHz Monolithic Balanced BPSK and Vector Modulators: Part 1 A.E. Ashtiani, T. Gokdemir, G. Passiopoulos, A.A. Rezazadeh, S. Nam and I.D. Robertson Please click here to view the pdf file of the Technical Feature...
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Measurement of a Small Signal Near a Large Signal Using a Spectrum Analyzer

Factors to be considered to determine the measurement limitations of a small signal in the presence of a large signal
Measurement of a Small Signal Near a Large Signal Using a Spectrum Analyzer   Morris Engelson JMS Consulting Portland, OR A number of factors are involved in determining whether a small signal can be measured in the presence of a larger signal using a spectrum analyzer. The type of...
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Spiral Inductors Substrate Loss Modeling in Silicon RFICs

A new physical model for studying and minimizing the less understood substrate losses, which limit the quality factors of spiral inductors constructed in silicon IC technologies
Technical Feature Spiral Inductor Substrate Loss Modeling in Silicon RFICs William B. Kuhn and Naveen K. Yanduru Please click here to view the pdf file of the Technical Feature...
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Improvement of a Cassegrain Antenna by Secondary Surface Corrections

A method to correct for the phase front distortions in the aperature field caused by the main mirror deformations in a large Cassegrain antenna
Technical Feature Improvement of a Cassegrain Antenna by Secondary Surface Corrections Juan Eusebio Garrido Arenas, Alberto Barcia Cancio and Jose Manuel Paez Please click here to view the pdf file of the Technical Feature...
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Around the Circuit

Around the Circuit INDUSTRY NEWS William C. Brown , a pioneer in microwave power transmission whose contributions to the field included work on the Apollo lander that sent televised images from the moon to the earth, died of cancer February 3 at his home in Waltham, MA. He was...
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New Literature

New Literature Surface-mount Device Catalog This eight-page catalog details surface-mount devices available in SOT-23, PZS, SMA and PLS packages, including zener, Schottky, switching and UHF diodes; bridge rectifiers; transistors; and junction FETS. Specifications and outline drawings are included. Electronic Devices Inc. (EDI), Yonkers, NY (914) 965-4400. Universal Power Meter...
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Web Update

Web Update Ultra-precision Substrates This Web site provides technical specifications for a broad range of substrate materials produced with exact repeatability consistency. The company's new generation of MicroFine substrates, featuring unsurpassed uniformity, are described. The site also details available precision lapping, polishing, laser machining, diamond sawing and edge grinding...
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MATERIALS

COMPONENTS Current-controlled Variable Attenuators The models AV101-12 and AV102-12 current-controlled variable attenuators (from the company's HIP3™ series components) cover the 0.8 to 1 GHz and 1.7 to 2 GHz ranges, respectively, and are designed to meet the wide dynamic range required in spread spectrum wireless base station applications. The...
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ANTENNAS

ANTENNAS Dual-band Magnetic-mount Antennas The DRM series dual-band magnetic-mount antennas are designed for the mobile antenna marketplace. The DRM 1800 cellular/PCS antenna operates in the 824 to 894 MHz and 1.85 to 1.99 GHz frequencies. The DRM 1900 GSM/DCS antenna operates in the 870 to 960 MHz and 1.71...
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