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Quadrifilar helical antennas (QFHA) are one of the best candidates to provide a high gain, shaped beam with excellent circular polarization axial ratio for satellite radio and mobile satellite phone systems. One of the most compelling reasons to use these antennas for digital radio and mobile satellite systems is...

Phased array antennas are traditionally used to produce narrow beams from large apertures. In this mode of operation, every radiating element in the array is broadly co-phased. The radiation pattern of the antenna is then the product of both the individual radiating element characteristic pattern and the array factor....

Optical networking and its supporting equipment, components and integrated circuits (ICs) are heading toward a market windfall, according to In-Stat/MDR. The high tech market research firm reports that with the geometric growth of the Internet, private IP networks and business-to-business (B2B) e-commerce, the demand for high speed capacity, within...

Isat 903, the latest in a line of advanced communications satellites built for Intelsat by Space Systems/ Loral (SS/L), a subsidiary of Loral Space and Communications, was successfully launched on March 30, 2002. The satellite was sent into space from the Baikonur Cosmodrome in Kazakhstan, aboard an ILS Proton...

According to In-Stat, the Optical Fiber Conference (OFC) held in Anaheim, CA, in March, was much quieter than last year's - a real reflection of the dismal market conditions in the telecom sector right now - and the fact that the tremendous hype surrounding the use of MEMS in...

As evidenced by CeBIT and CITA, Bluetooth solutions continue to make strides. Many products have been first launched in Europe and/or Asia, as many vendors consider the North American market to be behind. However, many companies realize that unless they also make their products available to North America, they...

Standard & Poor's has released its six months forecast for the Aerospace & Defense Industry, recommending investors caution regarding defense companies for the near term, the war on terrorism and concerns in the Middle East notwithstanding. The leader in global financial research and investment analysis says that the current...

US Secretary of Transportation Norman Y. Mineta and US Secretary of Defense Donald H. Rumsfeld announced the release of the 2001 Federal Radionavigation Plan (FRP), which continues to strengthen the US commitment to the Global Positioning System (GPS) and its modernization as a primary means of navigation in support...

Commerce Secretary Don Evans made the following remarks at the Broadband Technology Expo in Washington, D.C. on March 6, 2002: As the President has made plain, economic security is a top priority for his administration. The high tech industries represented here are the backbone of the American economy in...

French space contractor Alcatel Space has reached an agreement in principle to form a strategic partnership with Israeli contractor Gilat Satellite Networks to significantly enhance the latter's Gilat 360 broadband satellite platform. The new agreement, which is part of the two companies' two-way broadband satellite communications joint venture with...