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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...

Around the Circuit INDUSTRY NEWS Andrew Corp. has agreed to buy closely held Celiant Corp. for $470 M in cash and stock. Boards of both companies unanimously approved the deal. The deal represents the largest-ever acquisition by Andrew Corp. After the deal, Andrew will become the world's largest independent...

New Literature Application Note This 11-page application note focuses on arbitrary impedance transformations. Information on the basics of the transformation, how to use the transformation and limitations of the transformation is provided. An appendix, references, screenshots and graphs are also included. Anritsu, Microwave Measurements Div., Morgan Hill, CA (800)...

Catalog Update Product Brochure This six-page brochure features the company's model CS2010 vector signal generator. The system includes the signal generator mainframe with 14 bit DAC and 512 MB of high speed memory, sample clock synthesizer, US Cellular output bandpass filter, I/Q Import and Real Import modulation modules, Pentium...

Workshops & Courses Advanced Design Seminars Topics : The company's new spectral-domain system simulator, SPECTRASYS, is presented. Focus will be on practical implementations of systems using SPECTRASYS to detect signal peak paths, conducted emissions, adjacent channel distortion and channel power measurements. Site : See www.eagleware.com Dates : April 30-May...

News From Washington US Air Force Awards Mobile Radar Contract to ITT Industries ITT Industries Inc. announced that it has been awarded a contract to provide Mobile Approach Control System Precision Approach Radars (MACS PAR) to the US Air Force. The contract is worth in excess of $40 M...

International Report C-17 Completes First Phase TAWS Tests At the time of going to press, US contractor Boeing is reported to have completed first phase air testing of BAE Systems' TERPROM® Terrain Awareness Warning System (TAWS) aboard its C-17 strategic transport aircraft. Conducted at Edwards Air Force Base, CA,...