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Industry News

Around the Circuit

Industry News Tensolite , of Carlisle Companies Inc., announced that it has signed a definitive agreement to acquire privately-owned Carlyle Inc. , a provider of sophisticated aerospace and network interconnection solutions. With annual sales of approximately $125 M, Carlyle is focused on manufacturing wire and cable harnesses, rack and...
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Additive (Residual) Phase Noise Measurement of Amplifiers, Frequency Dividers and Frequency Multipliers

Phase noise is becoming generally recognized (and accepted) as a critical performance parameter in higher performing test, radar and communication systems. However, additive phase noise is not typically measured on amplifiers, frequency dividers or frequency multipliers due to the perceived difficulty of the measurement and the prohibitive cost of...
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A 3 to 5 GHz Ultra-wideband Low Noise Amplifier Using InGaP/InGaAs Enhancement-mode PHEMT Technology

A 3 to 5 GHz ultra-wideband (UWB) resistive shunt-feedback low noise amplifier (LNA) was demonstrated by using a In0.5Ga0.5P/InGaAs enhancement-mode (E-mode) pseudomorphic high electron mobility transistor (PHEMT) for the first time. The resistive shun...
UWB communication systems have recently attracted tremendous attention for industry, media and academic applications. The UWB system is a new wireless technology capable of transmitting data over a wide frequency range with low power consumption and high data rates. 1,2 In order to develop UWB communication ICs with reasonable...
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Applying the Slow-wave Effect in the Design of a Compact Antenna

A novel method to design a compact antenna has been proposed. The shorting and feeding positions are located on both sides of the designed antenna, respectively; therefore, it is called a planar double inverted L antenna (PDILA). According to measured ...
Recent developments in most consumer electronic products is toward miniaturization. The technology of integrated circuits is widely applied in the field of communication baseband modules and radio frequency modules to make communication products smaller in size. On the contrary, the technology of integrated circuits is difficult to use to...
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Slicing through the Radio: An Integrated, Configurable Components Approach

Highly integrated RF transceivers and system-on-chip (SOC) solutions are widely adopted in high-volume consumer products such as cellular handsets, WLAN routers and Bluetooth® headsets. However, the economics of semiconductor development do not support this high level of integration for low volume and custom-built radio designs. As such, these radios...
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First Generation High Voltage Vertical FET

Radio Frequency (RF) power amplifiers play a critical role in a broad range of wireless applications, including infrastructure for mobile devices and cell phones, broadcasting and medical equipment, satellite and military communications, emergency radios, and radar. Increasing demands on overall system performance, in turn, translates into added pressure on...
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Optimization of a C Band Pulse Altimeter

In this paper parameters of an old technology altimeter are discussed and then after deriving the measure of quality factor (height measurement accuracy), suitable solutions for improving the technology, namely decreasing its peak power (from 62.5w to10.9w) so to improve its LPI characteristics while maintaining its performance quality are...
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Analysis and Design of a Linearly Tapered Slot

1. Introduction The planar end fire tapered slot antenna (TSA) is a novel technique and is presently quite new [1], this has been less studied theoretically with little information or analysis results available in journals and literature today. These types of radiating structures find wide applications [2] vis-à-vis: as...
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Ultra-Wideband Technology and Test Solutions

Introduction UWB technology is quickly gaining acceptance as a wireless technology with outstanding characteristics. To understand UWB, we begin with a look at its origins and its growth to date. History Early radios like Guglielmo Marconi’s spark gap design (1896) marked the beginning of Impulse Radio (IR) communications. Inspired...
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