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Product Feature A Frequency Discriminator With a Small Footprint Merrimac Industries Inc. West Caldwell, NJ Delay-line frequency discriminators have long been fundamental components in radar warning receivers, instantaneous frequency measurement receivers (IFM) and angle of arrival interferometers. They offer a high performance alternative to I and Q networks in...

Cover Feature Low Cost Millimeter-wave Packaged MMICs United Monolithic Semiconductors S.A.S. Orsay Cedex, France Millimeter-wave technology is being recognized as having potential for emerging markets, such as broadband radio links for cellular base station backhaul networking and automotive safety systems. For such development to occur, however, the requested volumes...

Technical Feature Q- and V-band MMIC Low Noise Amplifiers This article describes MMIC low noise amplifiers for millimeter-wave applications using 0.15 µ m pHEMT technology. The design emphasis is on the active device model. The deficiency of conventional device models is identified. A distributed device model has been adapted...

Technical Feature A 2.4 GHz Polarization-diversity Planar Printed Dipole Antenna for WLAN and Wireless Communication Applications This article presents the design simulation, fabrication and measured performance of a 2.4 GHz polarization-diversity printed dipole antenna for wireless communication applications. Two orthogonal printed dipole antennas, each with a microstrip via-hole balun...

Tutorial Fibercom Clock Timing - A Review of PLL Solutions Bar-Giora Goldberg Peregrine Semiconductor Corp. San Diego, CA The fiber optics telecommunications market (called here photonics) has experienced huge growth in the last few years. Being a two-level digital transmission format, the requirements for clocking, timing, retiming and sometimes...

Product Feature An EM Simulator for MEMS and Real Life MMICs MEM Research Spoltore, Pescara, Italy Generally speaking, there are two large families of commercially available electromagnetic (EM) solvers. The first one is a general-purpose set, covering the analysis of arbitrarily shaped structures and using finite elements or differences,...

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...

Product Feature Monolithic RF Matrix Switches Peregrine Semiconductor Corp. San Diego, CA A new line of fully monolithic 4 x 6 RF matrix switches for cellular infrastructure applications has been introduced. The parts feature low insertion loss, very high port-to-port isolation and serial programmability. These designs represent the state-of-the-art...