RF & Microwave Industry News

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Cover Feature Welcome to the 2002 International Microwave Symposium Donn Harvey General Chairman, 2002 International Microwave Symposium Welcome to Seattle, Washington for the 2002 International Microwave Symposium, the 50th anniversary of the Microwave Theory and Techniques Society. This marks the first year the Symposium is held in the beautiful...

Product Feature Low Cost Phased Array Antennas for BWA Applications e-tenna Corp. Laurel, MD Today, most broadband wireless access (BWA) customer premise equipment (CPE) use fixed-beam antennas. These are generally either reflector (dish), or flat-panel array antennas. These antennas have generally been selected based on value - meeting a...

Product Feature A Low Loss PTFE-based Bond Ply Material for Multi-layer PCB Applications Taconic Advanced Dielectric Division Petersburgh, NY Growing needs are developing for pure package high performance, low loss laminate and prepreg materials for microwave telecommunications and high speed digital printed circuit board (PCB) applications. Polytetrafluoroethylene (PTFE), perhaps...

Product Feature An Eight-channel YIG-tuned Frequency Synthesizer Array Micro Lambda Wireless Inc. Fremont, CA Low phase noise is a staple of modern communication systems signal sources. For that reason system designers prefer yttrium iron garnet (YIG)-based sources. In addition, many of today's communications systems are required to operate at...

Product Feature Laser-activateable Plastics and Laser Devices that Deliver Flexible 3D MID Technology LPKF Laser & Electronics Garbsen, Germany In an increasingly competitive market those companies carrying out electronic production, especially small- to medium-sized enterprises, require fast, efficient and cost-effective solutions to aid the prototyping and production process. What...

Technical Feature Characteristics of a Large Bandwidth Rectangular Microstrip-fed Inserted Triangular Patch in a Circular Slot Antenna The characteristics of a rectangular microstrip-fed triangular patch in a circular slot antenna have been analyzed using the finite-difference time domain (FDTD) method. The impedance and bandwidth of the proposed antenna greatly...

Technical Feature System-level Filter Design Methodology for WLAN-OFDM Transceivers Orthogonal frequency division multiplex (OFDM)-based WLAN standards target wireless communications in the 5 GHz band for consumer multimedia applications. Digital OFDM transceiver ICs, based on frequency domain equalization, have been presented. However, it is still a challenge to design a...

Technical Note A New Planar Coupled-line Balun for Microwave Applications This article presents a novel inward collateral coupled-line balun. The new design provides an effective and simple way to avoid the narrow line spacing used in conventional planar Marchand baluns. A new structure with l /4 collateral coupled-lines has...

Tutorial Gain for Compressed Amplifiers There is growing interest in operating amplifiers into compression to achieve higher power-conversion efficiencies. It becomes constructive then to revisit the concept of amplifier gain, because when an amplifier operates in compression the general assumption that the output signal is directly proportional to the...

New Products COMPONENTS Eight-way Power Divider The 1-AD series of eight-way power dividers offers excellent phase and amplitude balance between ports for phased array signal applications. The series has 50 W impedance with a 1 W power rating from 2 to 500 MHz, phase balance of 0.5° and an...