RF & Microwave Industry News

WIQUEST ANNOUNCES GIGABIT ULTRAWIDEBAND CHIPSET

WiQuest Communications , a fabless semiconductor company developing complete ultrawideband (UWB) solutions, announced the availability of its WQST110 and WQST101 chipset, the industry's first commercially-available, high performance silicon delivering wireless communication speeds up to one gigabit-per-second. Based on the WiMedia UWB physical layer (PHY) and media access controller (MAC)...
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Complete Transmit Solutions Using a Quad-band Tx/Rx Front-end Module with Integrated Power Control

Leaping ahead in the race to deliver more and more functionality and value to the handset maker, Skyworks Solutions has introduced the industry’s best transmit front-end solution (SKY77506) for GSM/GPRS segment. Two InGaP HBT power amplifiers (PA), a BiCMOS power controller and two PHEMT-based RF switches have been integrated...
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The Influence of the Package Environment on the Functioning and Reliability of Capacitive RF-MEMS Switches

This article discusses the influence of the packaging process and environment on the functioning and reliability of capacitive RF-microelectromechanical systems (MEMS). It is shown that the packaging temperature profile can change the mechanical stress...
RF-MEMS switches offer a number of advantages for switching in the gigahertz range because of their low insertion loss, high linearity and low power consumption. 1 Several publications have reported on the performance of such switches, but more for non-packaged ‘naked’ samples. It is clear that the packaging process...
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RF Linear Power Amplifier Gain Stabilization Over Ambient Temperature

This article discusses the influence of the packaging process and environment on the functioning and reliability of capacitive RF-microelectromechanical systems (MEMS). It is shown that the packaging temperature profile can change the mechanical stress...
The temperature stability of the RF output power level has become especially important for different handheld wireless communication systems. For GSM mobile handsets, an analog closed-loop power control, incorporated in the transmitter power amplifier (PA) chain, allows the main parameters of the PA to be stabilized over the ambient...
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Editorial Index

ANTENNAS Chen, Richard, Neal Mellen, Makoto Shibata and Masahiro Miyazaki “A Compact Thin-film WLAN Antenna Switching Module,” No. 1, p. 130. Chen, Wen-Shan and Fu-Mao Hsieh “A Broadband Design for a Printed Isosceles Triangular Slot Antenna for Wireless Communications,” No. 7, p. 98. Go, Hyun-Chul and Yong-Woong Jang “Characteristic...
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Transistor LC Oscillators for Wireless Applications: Theory and Design Aspects, Part III

In Part I of this tutorial article, 1 a detailed discussion and analysis of the start-up and steady-state oscillation conditions for transistor LC oscillators was given, with emphasis on CMOS devices. Part II 2 presented both linear and nonlinear phase noise models for parallel feedback and negative resistance oscillators....
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Northrop Grumman Demonstrates JTRS Power Amplifier for Army

Northrop Grumman Corp. has successfully demonstrated the capabilities of an advanced high power amplifier for the US Army that is capable of enabling critical communications for the network-centric Future Force. Army Future Force concepts include information superiority and improved situational understanding through the integration of data from joint forces....
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