Microwave Engineering Europe - November 2008 - (Page 5) By JP Joosting, Microwave Engineering Europe NEWS 5 E2v forms microwave center at Nottingham University The e2v ‘Centre for Industrial Microwave Processing’ (e2v CIMP) will be formed through a partnership between researchers in the National Centre for Industrial Processing at the University’s Faculty of Engineering and e2v Technologies plc (Chelmsford, England). The center is set to focus on the commercialisation of technologies for microwave processing in a wide range of bulk material processing industries developed at the university. It will be based on a financial contribution of more than £1 million (about $1.7 million) from e2v, with additional funding from the university. One example of how microwaves could be put to work relates to mining and materials processing. Up to five per cent of the world’s electrical energy output is said to be used to grind rocks to liberate metal ore. Microwaves could be used to stress and fracture the rock prior to grinding, achieving the same results for a fraction of the energy consumption. www.mwee.com/210800327 Startup claims Gbit version of Wi-FI Quantenna Communications Inc. (Sunnyvale, CA) has joined the ranks of companies crafting high-end variations of 802.11n silicon. The startup is using 4x4 MIMO (multiple input, multiple output) antennas along with beam forming and mesh technologies to deliver an aggregate throughput of up to a Gbit/ second. The company uses two chips, one each for 2.4 and 5 GHz links. Quantenna claims it delivers twice the 300 Mbits/s physical layer throughput of existing Wi-Fi chips from established vendors including Atheros and Broadcom. The chips use a version of mesh networking, based on concepts under discussion in the 802.11s group, where each node can act as an access or relay point. Rezvani said a mesh of wall plugs is the best way to assure whole house coverage across the broad range of homes. The Quantenna chips can be configured for 2x2 or 4x4 operation using only 5 GHz, 2.4 GHz or both. In this way, the startup aims to attack a broad range of designs from TVs and set-top boxes to computers and business and consumer gateways. The chips integrate power amplifiers with 18 dBm maximum output along with the components typically used in radio front-end modules such as switches, baluns and diplexers. An on board DSP handles the beam forming work and an ARM 926 does switching and routing jobs. The 2.4 and 5 GHz chips sample before the end of the year and consume less than 10 W maximum when transmitting at up to a Gbit/s aggregate. They will cost less than $20 each in volume when in production early next year. www.mwee.com/211200283 ATC 800 Series High RF Power Multilayer Capacitors Designed for the Most Critical Applications, Building On The Excellence Of Our 100 Series… ATTRIBUTES • Optimized Form Factor • Lowest ESR @ Wireless Frequencies • Highest Self Resonance • Rugged, Reliable NPO Dielectric • High RF Power Applications • Superior Thermal Performance • Ideal for Large and Small Signal Wireless Applications IDEAL FOR • Wireless / Telcom / GPS • Public Safety • WiMAX • Microwave Communications Systems • Satellite Communications • Avionics 800 SERIES Case A • .055" x .055" (1.4 mm x 1.4 mm) Capacitance Range Electrical Specifications • 0.1 pF to 100 pF • Voltage Rating: to 250 WVDC • IR: 105 M @ 25°C • TCC: 0 ±30 PPM/°C ESR ( ) @ 1 GHz (typ.) 3.3 pF — 0.064 10 pF — 0.063 33 pF — 0.060 800 SERIES Case B Capacitance Range Electrical Specifications • Voltage Rating: to 500 WVDC • IR: 105 M @ 25°C • TCC: 0 ±30 PPM/°C ESR ( ) @ 1 GHz (typ.) 10 pF — 0.064 39 pF — 0.064 100 pF — 0.070 • .110" x .110" • 0.1 pF to 1000 pF (2.79 mm x 2.79 mm) AMERICAN ATC North America 631-622-4700 sales@atceramics.com TECHNICAL ATC Europe +46 8 6800410 sales@atceramics-europe.com CERAMICS ATC Asia +86-755-8366-4318 sales@atceramics-asia.com www.atceramics.com Microwave Engineering ● November 2008 www.mwee.com ● http://www.mwee.com/210800327 http://www.atceramics.com http://www.mwee.com/211200283 http://www.atceramics.com http://www.mwee.com
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