Industry News

WiMedia UWB PHY Design and Testing

New wireless networking standards commonly present design challenges in the physical layer, which in turn present circuit simulation and testing challenges. The WiMedia MB-OFDM UWB signal with its low power, hopped, 528 MHz wide OFDM format is a curren...
With the blessing of the WiMedia Alliance, the stage is set for widespread implementation of certified wireless USB and next-generation Bluetooth 3.0 products, using multi-band orthogonal division modulation (MB-OFDM)-based ultra-wideband (UWB) physical layer (PHY). Wireless USB supports data rates of 53.3, 80, 106.7, 160, 200, 320, 400 and 480...
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Complete RFIC Design Flow Targeting Next Generation Wireless Front-ends

Besides the circuit design itself, a complete design flow based on a prescribed methodology is crucial for a successful implementation of next generation wireless front-ends. An integral part of this process is a scalable front-to-back solution that no...
The demand on mobile communications has grown over recent years. Today’s mobile communication systems use sophisticated signal processing to achieve high transmission rates. The challenges for the next generation wireless systems will increase even further, when designs will need to meet multi-standards and achieve reconfigurability. Evaluations of various integration...
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HSPA: New Challenges for Power Amplifiers in UMTS User Equipment

Mobile radio technology, based on the universal mobile telecommunications system (UMTS), is developing at breakneck speed. Network operators worldwide are currently upgrading their networks with new high speed downlink packet access (HSDPA) technology, which optimizes the data transmission from the network to the user equipment (downlink). New transmission methods...
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Literature Showcase

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Microwave Amplifier Brochure The Microwave Amplifier Brochure from AR Worldwide RF/Microwave Instrumentation features a wide range of microwave amplifiers. The brochure highlights the “S” and TWT amplifier series that covers 1 to 4000 W and 0.8 to 40 GHz and includes photographs, descriptions, specifications and performance graphs for each...
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Ask Harlan, November 13, 2006

Harlan Howe has 34 years experience as a microwave design engineer and fifteen as publisher and editor of Microwave Journal ® , and is an IEEE Fellow and past president of MTT-S. He's here to answer your questions on RF and Microwave engineering.
Published November 13, 2006 From: Hadi Ghazian, Tarbiat Modares University Dear Harlan, How can I calculate and measure the maximum power capacity of a cylindrical waveguide operating in the TE11 mode? Dear Hadi, The power handling of waveguides is a function of dimensions, surface finish, conductivity, dielectric strength of...
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Siemens Strengthens Presence in China

Over the next two years, Siemens will invest approximately €70 million in building a center for regional headquarters in Shanghai, China. Siemens Center Shanghai (SCS) will serve the eastern region of China and the aim is to consolidate all Shanghai-based Siemens business there by the end of 2008. More...
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7 layers Expands US Facilities

7 layers , an international service group for the wireless communications industry, with test and service centers in Europe, Asia and the US, has consolidated and enlarged its US-based offices and laboratories in order to further expand its services. Following continuous growth since 1999, the company is moving into...
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Endwave Relocates Corporate Headquarters

Endwave Corp. , a provider of high frequency RF modules for telecommunications networks, defense electronics and homeland security systems, announced the completion of the relocation of its corporate headquarters. The new address is: Endwave Corp., 130 Baytech Drive, San Jose, CA 95134, phone: (408) 522-3100, fax: (408) 522-3197, or...
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Bergart Joins UltraSource as CFO

UltraSource Inc. , a supplier of custom thin film circuits and ceramic interconnect devices, announced the addition of Jeff Bergart as chief financial officer (CFO). Prior to his employment at UltraSource, Bergart held financial management roles at several New England-based organizations, including Digital Equipment Corp. and KROHNE Inc. As...
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