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Industry News

Fujitsu Names COO for US Semiconductor Operation

Fujitsu Microelectronics America Inc. (FMA) named Keith Horn to be its chief operating officer (COO). Horn, who is currently serving as senior vice president of sales and marketing, will be promoted to COO effective September 1, reporting to Kazuyuki Kawauchi, president and CEO of Fujitsu Microelectronics America. Keith Horn...
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Distortion Inherent to VNA Test Port Cable Assemblies

Today’s modern vector network analyzers (VNA) are the product of evolutionary advances in technology that literally span decades — a marrying of the latest developments in microwave, integrated circuit and software technologies. To a great extent, the precise nature of vector network analysis results from its highly developed calibration...
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RF Power Detection: Measuring WiMAX Signals

WiMAX, which offers high speed data access to large geographical areas — covering distances up to 30 km — is defined by the IEEE 802.16 family of standards. It uses orthogonal frequency division multiplexing (OFDM) to attain the high data rates. Consequently, the composite signal envelopes of the data...
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Novel Low Pass Filters Using a Defected Microstrip Structure

In this article, the stop-band characteristics of a novel defected microstrip structure (DMS) are studied and its application to a low pass filter is proposed. The equivalent circuit model of the unit defected microstrip structure is used to explain th...
A novel defected microstrip structure (DMS), which behaves in a way similar to the known defected ground structure (DGS) unit cell, 1–10 is studied in this article. The unit DMS 3,4 is made by etching slots in the microstrip line, which then exhibits the property of rejecting microwaves at...
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Low Voltage Operation of GaAs Power Amplifiers

Next-generation mobile phones are capable of downloading music and video programming, displaying global positioning system (GPS) mapping and sharing high resolution photographs. These new applications are becoming increasingly popular as teenagers and others learn to manipulate photo and music files. Applications involving heavy display usage (such as mobile television)...
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Accurate Simulation of an X-band Frequency Synthesizer

This article describes the simulation and design of an X-band frequency synthesizer that can be applied to a micro-satellite transmitter system. The effects of the sideband’s spurious noise on the adjacent channels and the phase noise in each component...
Today’s transmitters for earth imaging micro-satellite systems demand higher communication quality and higher data rates to be capable of transmitting pictures or data with an appropriate quality, a higher frequency of operation and more channels per unit bandwidth. Low power consumption and small size are also required for this...
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