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ANTENNAS Chuang, Huey-Ru, Liang-Chen Kuo, Chi-Chang Lin and Wen-Tzu Chen "A 2.4 GHz Polarization-diversity Planar Printed Dipole Antenna for WLAN and Wireless Communication Applications," No. 6, p. 50. Gunnels, Robert "Axial Ratio Measurements of Single Circularly Polarized Antennas," No. 1, p. 124. Izadian, Jamal S. "QFHA Antennas for Satellite...

Modern commercial and military communication systems require high efficiency, long term operating conditions. For this purpose, the power amplifiers, as final and highly current-consuming transmitter elements, are developed using the high efficiency class B, F or E modes of operation, depending on the technical requirements. In class B operation,...

The W-CDMA standard expresses transmit quality in terms of EVM and ACLR, and receive quality in bit error ratio (BER). These quality measurements are simple scalar numbers representing a very complicated system. Modern communications channels (still) consist of a number of concatenated functions such as baseband (BB) processor, DAC,...

Raytheon Co. is expanding its Reliability Analysis Laboratory (RAL) technical offerings with the incorporation of reliability engineering consulting services. Reliability is a core feature that can make or break the long term success of both products and companies. Design for Reliability (DFR) engineering tasks are just as important as...

Lockheed Martin received a $131 M funding increment to continue its leadership of the Battle Management/Command and Control/Communication (BM/C2/C) program for the Missile Defense Agency's (MDA) Missile Defense National Team. The contract runs through December of 2003 and funds the team's efforts to devise and field an operational structure...

Raytheon Co.'s first article ASR-11 digital airport surveillance radar (DASR) systems located at Eglin Air Force Base, FL, and Stockton, CA, have been accepted by the US Air Force. This contract milestone has been achieved through confirmation of compliant performance through testing. Acceptance of these first article systems clears...

Northrop Grumman Corp.'s Integrated System sector has been awarded a $49 M, nine-year contract by the US Air Force to provide Precision Guided Munitions Planning software (PGMPS). This program will give the Air Force a common, integrated personal computer-based mission planning application for all current and future USAF PGMs...

The University of Surrey's (Guildford, Surrey, England) acquisition of an Ultra High Vacuum Scanning Tunnelling Microscope/Scanning Electron Microscope (UHV STM/SEM) is being billed as a central figure to a £1.2 million future nanotechnology research project that is headed up by the institution's Professor of Solid-State Electronics, Ravi Silva. Built...

On 8 October 2002, Netherlands contractor Royal Philips Electronics announced the opening of the Philips Delft Design Centre (PDDC) at Delft, Holland. A cooperative venture with Delft University of Technology (DUT), Philips cites the new facility as a symbol of its commitment to investing in the future of standard...

Sweden's National Testing and Research Institute has launched a programme to provide a capability whereby it can test the impact of radar-generated electromagnetic interference on processors used to control automobile functions such as throttle control, gear (shift) changing and braking. While not yet as common as potential risks from...