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The state-of-the-art indoor wireless systems operating at microwave frequencies (approximately 2.45 and 5.5 GHz) have been standardized in conformance with different multiplexing schemes and modulation techniques. The underlying design considerations 1,2 aim at realizing robust operation of several interconnected and coexisting hosts 3 across RF links. These links are...

The Global Positioning System (GPS) is a worldwide satellite navigation system, which consists of a constellation of 24 satellites and their ground stations. GPS signals are specially coded satellite signals that can be processed in a GPS receiver. When receiving the signals from at least four satellites, a receiver...

Commercial communications satellite operators face a difficult problem. In the rapidly evolving global telecommunications industry, entire market segments can emerge, thrive, change and disappear during the fifteen-year on-orbit lifetime of a modern communications satellite. To address these changing market needs, it would be desirable to have a communications payload...

Texas hospitality was definitely in abundance as the participants descended on Fort Worth for IMS 2004. Hot, humid weather and more rain than was comfortable did not dampen the enthusiasm or diminish the attendance at the MTT-S International Microwave Symposium held June 6 to 11. Overall attendance fell just...

High Performance Spectrum Analyzers The PSA series of high performance spectrum analyzers is for designers of WLAN, satellite communications and radar systems, as well as amplifiers for 3G wireless systems. The recently added two optional enhancements broaden bandwidth and analysis capabilities. The enhancements include a digitizer that enables signals...

Industry News L-3 Communications , a defense contractor, announced that it will acquire Cincinnati Electronics , a provider of military infrared imaging sensors and space launch electronics, for approximately $172 M in cash. Cincinnati Electronics’ customers include the US Army, US Air Force, US Navy and US Marine Corps....

Application Note Application Note 1471, “RF/IF-to-Digital Connected Solutions Bit Error Rate Using the Advanced Design System,” is a 24-page note that explains how connected solutions can help bit error rate verification applications for RF/IF-to-digital receiver topologies. Agilent Technologies Inc., Palo Alto, CA (877) 424-4536, www.agilent.com. Amplifier Brochure This amplifier...

EDA Software Release This Advanced Design System (ADS) 2004A is a recent version of the high frequency electronic design automation (EDA) software that offers significant improved ease-of-use and productivity for common circuit-design tasks. ADS 2004A offers a complete, front-to-back high frequency design, simulation, layout and verification solution in a...

Since the events of September 11, satellite operators have experienced a significant increase in US military and government demand for commercial satellite communications. A new study from Frost & Sullivan, “US Military and Government Demand for Global Satellite Communications,” demonstrates that revenues from US military users of satellite communications...

An upgraded Global Positioning System (GPS) satellite, built by Lockheed Martin for the US Air Force, was successfully launched from Cape Canaveral. The satellite features significant performance upgrades, including an advanced antenna panel, which will increase power for GPS receivers. This was the eleventh successful launch of the new...