RF & Microwave Industry News

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PRODUCT FEATURES A High Power LDMOS Transistor for Broadcast Transmitter Applications Philips Semiconductors Eindhoven, The Netherlands D igitization in the broadcast world is paving the way for major new markets, such as high speed Internet access and mobile multimedia in-car entertainment, as well as high definition TV and a...

PRODUCT FEATURES RF Digital Attenuators in Plastic MLP Packages M/A-COM Lowell, MA B roadband digital attenuators have been used to set power levels in RF and microwave circuits for many years. The concept is to electronically switch resistive T and P networks to attenuate and control signals. In doing...

TECHNICAL FEATURE A High Order Frequency Multiplier for Low Power Applications D.R. Lang Comtech/EFData Tempe, AZ D irect frequency multipliers are commonly used in applications where the added phase noise or circuit complexity of a phase-locked loop is undesirable. At power levels above 1 mW, varactors or step recovery...

TECHNICAL FEATURE SOLR Calibration for Grounded Coplanar Waveguide Lines Shay Gross, Lawrence P. Dunleavy and Thomas M. Weller University of South Florida, Department of Electrical Engineering, Wireless and Microwave (WAMI) Program Tampa, FL This article examines short-open-line-reciprocal (SOLR) calibration of grounded coplanar waveguide (GCPW) lines. The calibration is made...

SPECIAL REPORT CD Radio Promises Data and Audio Listening Relief Ernest Rejman Contributing Editor I f while driving on the interstate you cannot elude Hank Williams' laments about cheatin' love and his long-dead hound, or are trapped in New York, Chicago or San Francisco, irritated by bad reception when...

TECHNICAL NOTES ISM vs. Spread Spectrum -- Avoiding the FCC Mitchell Lazarus Fletcher Heald & Hildreth PLC Arlington, VA T he Federal Communications Commission (FCC) recognizes two types of devices that intentionally emit RF energy: communications equipment and everything else. The first category includes AM/FM, TV, point-to-point, satellite, cell...

SPECIAL REPORT Acronyms and Abbreviations Used by the RF/Microwave Industry Frank Bashore Microwave Journal Staff T his list represents most of the acronyms and abbreviations used in Microwave Journal technical articles and editorial features during the last five years. The ever-growing list has proven enormously useful to our staff...

TECHNICAL NOTES Distortions in Cascaded MMIC Power Amplifiers Oleksandr Gorbachov and Yie-Der Shen Hexawave Inc. Hsinchu, Taiwan, R.O.C. M any methods exist for the linearization of RF/microwave PAs. 1?4 In most cases, these methods are applicable to high power amplifiers taking into account their cost, size, weight and power...

TECHNICAL FEATURE Effects of a Driver's ACLR on Total ACLR Sanggee Kang and Heonjin Hong Electronics and Telecommunications Research Institute (ETRI) Taejon, Korea Sungyong Hong Chungnam National University Taejon, Korea The effects of a driver's adjacent-channel leakage ratio (ACLR) on the total ACLR have been tested to investigate the...

NEW PRODUCTS COMPONENTS * SPDT RF Relay The model RF 2X1 SPDT RF relay is designed for remote switching of VHF signals. The unit provides high isolation and low loss in the frequency range from DC to 900 MHz, and isolation is approximately 60 dB with an insertion loss...