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This article presents the design of a 3.3 to 3.8 GHz LNA, suitable for IEEE 802.16a WiMAX customer premise equipment (CPE) and base transceiver stations (BTS), built on inexpensive FR4 copper laminate epoxy glass board material using the Agilent Technologies ATF-54143 E-pHEMT (enhancement-mode pseudomorphic high electron mobility transistor). The...

Recently, more attention has been paid to applications of ultrawideband (UWB) technology on wireless communication. It offers advantages of decreased cost and increased capabilities, compared with other conventional radio technologies. Standards activities for UWB systems are promoting a global perspective for not only technology but also regulations. UWB has...

This article presents the design approach and test results of 1, 1.5, 2 and 5 W, Ku-band MMIC power amplifiers developed using the high performance MSAG MESFET technology. Both single-ended and balanced topologies were used. A minimum power-added efficiency (PAE) of 27 percent, an output power (P out )...

Photonic band-gap (PBG) structures were initially proposed in the optical component field. In the microwave field, PBG periodic structures suppress the propagation of electromagnetic waves whose frequencies are within certain bands. They allow shifting the rejected frequency band by simply changing the geometry parameters of the PBG element or...

A coupler with a through loss of less than 1.45 dB from 5 to 900 MHz was needed in a 75 ? system and only commercial couplers of 10 dB (or more) could offer this low through loss, particularly at the highest frequencies. Unfortunately, another requirement was to produce...

In 1965, inhabitants of Salvan, Switzerland, located above Martigny in the Mont Blanc region, “remembered” that a senior citizen of their village had lived a very unusual experience seventy years before, when he was a young boy.

Over the past five years, an explosion in growth of the portable electronics industry has provided numerous opportunities for manufacturers of RF components. Today, the designers of compact electronic systems, especially handheld/wireless devices, are faced with tightening board space constraints, thus driving the requirement for alternative integrated passive technologies....

Harris Corp. unveiled an advanced sensor system product line that offers remote, unattended intrusion detection and surveillance capabilities ideally suited to the defense of military installations and perimeters, as well as for the protection of borders and other assets associated with homeland defense. The Harris Falcon Watch™ Remote Intrusion...

The US Air force has awarded Northrop Grumman Corp. a five-year, $532 M contract for the Joint Surveillance Target Attack Radar System (Joint STARS) System Improvement Program to provide system design and development improvements to the E-8C Joint STARS fleet. The contract covers the engineering, design, development, integration, test...

Development of an airborne radar that can search broadly for ground targets while transmitting data about them at Ka-band is the objective of the Affordable Adaptive Conformal ESA Radar (AACER) program awarded to Raytheon by the Defense Advanced Research Project Agency (DARPA). Raytheon was selected to proceed with Phase...