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Andrew Corp. has opened a new manufacturing facility in the Czech Republic for the production of base station antennas for wireless operators in the Europe, Middle East, Africa region. The new Brno plant is a significant expansion of Andrew’s European presence and enhances the company's ability to support locally...

Published August 07, 2006 You be the expert: The answers to the July Question of the Month are below Jayesh Nath from Harris Corp. has submitted this month’s question: What is the proper usage of diplexer and duplexer? From: Simon Zhou, Mitec Telecom Inc. Dear Jayesh, Diplexer is a...

A contract worth €30 M and funded by the World Bank has been awarded to Alcatel by the Iraqi Telecommunications & Post Corp. (ITPC) to deliver a turnkey high capacity nation-wide microwave backbone. The network will enable ITPC, the sole fixed operator in Iraq, to handle the ever-growing national...

The RF to Light 100 changed 0% last week, YTD 0% at 2115. Network Systems and RF Semiconductor stocks lost ground again. The market remained oversold. Short selling increased from 3.7 to 4.2% average. Average P/E plunged to 33 - last seen in 3Q05 and 1Q03. It appears that...

Published September 01, 2006 In an effort to better combine the editorial content of our magazine with our newly developed and retooled on-line presence, we have decided to expand Harlan's RF and microwave engineering advice into a monthly feature that appears in Microwave Journal. Harlan has selected one question...

In recent applications of telecommunications and remote sensing at radio, microwave and terahertz frequencies, the exploitation of ultra-wideband (UWB) antennas is growing steadily. 1 In subsurface prospecting, for example, they can provide higher imaging resolution and better target characterization. 2 The design and analysis of such high performance antennas...

Strategy Analytics released, "Popular UMTS Multi-band Combinations: Implications for Radio Components," from its RF and Wireless Components Service, which assists radio component companies in targeting their design resources to expected market trends. The need for handsets that can operate in UMTS and legacy GSM modes across multiple regions will...

DesignAdvance™ Systems Inc., a developer of innovative design automation software for users of EDA and MCAD tools, announced its entrance into the Chinese PCB design market with the appointment of Shenzhen EDA Technologies Co. Ltd. as a distribution partner. Shenzhen EDA Technologies, a dedicated professional engineering software company based...

The electrical properties of a loss-less coupler, using TEM mode coupled lines, can be described in terms of even- (Z oe ) and odd- (Z oo ) mode impedances and its primary parameters [L] and [C] matrices 2 where L o and C o are the proper inductance and...

Branch-line couplers (BLC) are widely used as 90° signal dividers in microwave and millimeter-wave circuits. A BLC can provide two quadrature-phased signals from a single local oscillator for use in image rejection mixers. 1 It can be used as part of the feeding network for antennas to produce circularly...