RF & Microwave Industry News

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PRODUCT FEATURE NEW EDA TOOLS TO ACCELERATE RF AND WIRELESS DESIGN CYCLES XPEDION DESIGN SYSTEMS INC. Santa Clara, CA Continued demand for wireless services has resulted in the need for large spectrum and new compression techniques to enhance capacity without sacrificing quality. Second-generation (2G), 2.5G and 3G digital wireless...

PRODUCT FEATURE ORGANIC CERAMIC MICROWAVE SUBSTRATE MATERIALS TACONIC ADVANCED DIELECTRIC DIVISION Petersburgh, NY The ORCER family of copper clad substrate material is formulated to combine the property advantages of fluoropolymer organic chemistry with ceramic elements. The development of this technology has enabled the creation of a wide range of...

COVER FEATURE ELECTRONICALLY TUNABLE RF DIPLEXERS FOR MICROWAVE RADIO APPLICATIONS PARATEK MICROWAVE INC. Columbia, MD Commercially available RF diplexers consist of two fixed bandpass filters sharing a common port. Signals applied to the common port are separated in accordance with the passband frequency of each filter network. Signals applied...

PRODUCT FEATURE SPACE-QUALIFIED 1.2 MM FIBER OPTIC CABLE W.L. GORE & ASSOCIATES INC. Newark, DE Fiber optic cable is gaining rapidly in use throughout both military and commercial systems. The very low loss and wide bandwidth provide a significant advantage where relatively long cable connections must be used. However,...

PRODUCT FEATURE MINIATURE SMD QUADRATURE HYBRIDS FOR WIRELESS APPLICATIONS SV MICROWAVE, COMMERCIAL PRODUCTS GROUP Largo, FL   A series of miniature three-port surface mount device (SMD) 90° hybrid couplers have been developed for wireless applications. The series currently comprises 12 individual components spanning an 824 to 5800 MHz frequency...

TECHNICAL FEATURE AN OBJECT-ORIENTED CIRCUIT SIMULATOR Abstract: The basic ideas behind the circuit simulator and design tool APLAC are presented in this article. The chosen way of implementation of this circuit simulator is based initially on nodal formulation and gyrator transforms, leading to a very general and powerful architecture....

TECHNICAL FEATURE EFFECTIVE CIRCUIT DESIGN TECHNIQUES TO INCREASE MOSFET POWER AMPLIFIER EFFICIENCY ANDREY V. GREBENNIKOV Institute of Microelectronics Singapore Newly developed low cost and highly linear, high gain and high power laterally diffused metal oxide semi-conductor (LDMOS) and vertically diffused metal oxide semiconductor (VDMOS) field-effect transistors are attractive devices...

TECHNICAL FEATURE CLOCK RECOVERY AT GIGABIT-PER-SECOND DATA RATES Abstract: Many devices used in high speed optical fiber terminal equipment are microwave electronic circuits. One such device is an electrical clock recovery circuit. Since bit rates of data signals in optical communications exceed 1 Gbps, the clock recovery technique becomes...

TECHNICAL NOTE PROTECTION AGAINST DANGEROUS LIGHTNING STRIKES AND THEIR SECONDARY EFFECTS Abstract: Traditional methods of lightning protection may actually increase the likelihood of lightning-related damage. The answer to proper lightning protection lies not in channeling lightning, but in preventing the charge from accumulating in the first place. This article...

TECHNICAL FEATURE THREE-SAMPLER NETWORK ANALYZER CALIBRATIONS DRAGO KOSTEVC AND JOZE MLAKAR University of Ljubljana Ljubljana, Slovenia Calibration is the most important aspect of measurement with a network analyzer. The standard method for network analyzer calibration is short-open-load-through (SOLT) calibration.1 For calibration of four-sampler analyzers, the use of self-calibrating procedures...