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Industry News

Design, Development and Fabrication of Post-coupled Band pass Waveguide Filter @ 11.2GHz for Radiometer

Microwave methods, both passive and active, play an important role amongst modern diagnostics of fusion plasma research. Microwave Reflectometer is used to measure plasma density profile and its fluctuations. Electron Cyclotron Emission (ECE) waves which has a frequency range in the microwave as well as millimeter range is used...
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White Paper: Orthogonal Frequency Division Multiplexing

Orthogonal frequency division multiplexing (OFDM) is a form of digital modulation used in a wide array of communications systems. This paper will explain what OFDM is, why it’s important, where it’s used, and what test instrumentation is required to maintain it. Perhaps we should first explain what is so...
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Application Note: Parallel Capacitance in High Power RF Resistors

Most of the high power resistors used in RF and Microwave frequencies are found in Wilkinson power dividers/combiners in power distribution circuits. For best performance, the 100 Ohm isolation resistor, when used in a Wilkinson divider, should have very low capacitance to minimize the effects on insertion loss. Additionally,...
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Wind of Change for NEC and Sumitomo in Italy

NEC Corp. and Sumitomo Corp. have signed a framework contract with Italian mobile phone operator Wind for the supply of NEC's advanced PASOLINK NEO® point-to-point wireless access systems. Wind is one of the leading fixed-line, mobile and Internet operators in Italy, with more than 15 million mobile customers and...
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Microwave Band-pass Filter and Passive Devices Using Copper Metal Process on Al2O3 Substrate

Introduction Nowadays the portable electronic appliances, such as laptop computers, Personal Digital Assistants (PDAs), cellular phones, MP3 players, etc., are rapidly growing in the life electrical popularization. Generally, the hand-held products demand miniaturization and multi-functionality, which are achieved by the module IC technology with highly integrated package. The high...
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