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Industry News

A Broadband Bias Tee for Optical Networking Applications

A broadband bias tee for optical networking applications is featured ont his month's cover
COVER FEATURE A Broadband Bias Tee for Optical Networking Applications Inmet Corp. Ann Arbor, MI T he explosive growth of the Internet has created an insatiable demand for communications bandwidth by everyone, from the Web-browsing individual in the home office, to the multibillion-dollar corporation that is at a severe...
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A High Power LDMOS Transistor for Broadcast Transmitter Applications

A unique ultra-high frequency lateral double-diffused metal-oxide semiconductor (LDMOS) that cuts the cost of upgrading terrestrial transmitters for digital operation
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...
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RF Digital Attenuators in Plastic MLP Packages

A family of digital attenuators that produce five- and six-bit formats with least significant bit weights of 0.5 and 1 dB
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...
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A High Order Frequency Multiplier for Low Power Applications

A direct frequency multiplier suitable for high order, low power multiplier applications
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...
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SOLR Calibration for Grounded Coplanar Waveguide Lines

Short-open-line-reciprocal (SOLR) calibration of grounded coplanar waveguide lines using WinCal software
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...
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CD Radio Promises Data and Audio Listening Relief

A look at digital audio broadcasting popularly referred to as CD radio, and the major players in the CD radio arena
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...
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ISM vs. Spread Spectrum -- Avoiding the FCC

A look at industrial, scientific and medical (ISM) equipment and its relationship with spread spectrum modulation under the Federal Communications Commission's (FCC) Part 15 rules
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...
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Acronyms and Abbreviations Used by the RF/Microwave Industry

A handy reference of acronyms and abbreviations used in Microwave Journal technical articles
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...
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Distortions in Cascaded MMIC Power Amplifiers

An experimental investigation of the influence of a second harmonic phase delay between two cascaded GaAs MESFET MMIC power amplifiers on total distortion
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...
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Effects of a Driver's ACLR on Total ACLR

Effects of the adjacent-channel leakage ratio (ACLR) characteristics of a driver and amplifier on total ACLR
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...
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