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ARTICLES

Minimizing PIM Generation From RF Cables and Connectors

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SantronUnderstanding mechanical tolerances, coaxial design details and connector materials used in cable assemblies helps produce communications equipment with the lowest levels of passive intermodulation (PIM).
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Head to Head: NI PXIe-5665 Versus Traditional Boxed Instruments

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NIThis paper discusses the setup details for the demo shown in this video Head to Head: NI 5665 vs. Traditional Boxed Instruments. The demo compares the performance and speed of the NI PXIe-5665 with the Agilent PXA. Rather than comparing the datasheet specifications of both instruments, this video compares the two instruments while performing real- world test scenarios.


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50V LDMOS

An ideal RF Power Technology for ISM, Broadcast and Commercial Aerospace Applications
Freescale Semiconductor, RF Division
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RF laterally diffused MOS (LDMOS) is currently the dominant device technology used in high-power RF power amplifier (PA) applications for frequencies ranging from 1 MHz to greater than 3.5 GHz. This paper will include device and design considerations that specifically target enhancing ruggedness performance. The features of the products using this platform will also be presented.


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AWR’s Visual System Simulator Co-simulates with NI’s LabVIEW for Enhanced Signal Processing Capabilities

White Paper, AWR Corp.
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Accurate Co-Simulation of Surface-Mount Capacitors in Shunt Configurations

Ledezma (USF), Weller (Modelithics), Robin (Motorola)
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Bandwidth vs. Efficiency Trades in RF Amplifier Design

Greg Ramon, QinetiQ North America
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Integrated LNA Serves Base Station Needs

Chin-Leong Lim
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Joint Analysis of Traffic and Channel Power Distributions in 3G Wireless Telecommunications Networks

Sean Cordone, Vice President of Engineering
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RFID objects monitoring in space bounded by metallic walls.

S. Korneev, S. Alyakrinsky.
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Considered problem is the reading of multiple RFID tags in the region of space, which is bounded by metal walls and has resonant radio-engineering properties. Obtained results show that it is possible to get reliable automated monitoring of items with tags by forming of a local electromagnetic field (EMF) with the help of slow-wave structures (SWS).
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Turn up the Heat: An Electrical-Thermal MMIC Design Flow

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DOCUMENTS AND FILES

Calculating a Calibration Factor

September 16, 2014
Technicians and engineers use calibration factors when making measurements; but where do these calibration factors really come from?

Thermal Measurement Methodology of RF Power Amplifiers

September 16, 2014
This paper offers an overview of Freescale's methodology for thermal measurement of high power RF power amplifiers (RFPAs), including the use of infrared microscopy to accurately determine die temperature at high frequency under RF test conditions, and thermocouple measurements to accurately determine case temperature. It also covers the use of maximum die temperature to calculate a reliable junction-to-case thermal resistance value. A wide range of Freescale's high power RFPAs are available from Richardson RFPD / Arrow RF & Power at www.richardsonrfpd.com.

Modern Architecture Advances Vector Network Analyzer Performance

September 16, 2014
Modern Vector Network Analyzer (VNA) architectures such as those based on Nonlinear Transmission Line (NLTL) samplers and distributed harmonic generators now offer a beneficial alternative to traditional sampling VNAs. They allow for a simplified architecture and also enable VNAs that are much more cost effective. It is shown that NLTL technology results in miniature VNA reflectometers that provide enhanced performance over broad frequency ranges, and reduced measurement complexity, providing VNA users a unique and compelling solution for their high-frequency measurement needs.

Cost-efficient and Extensible RF Spectrum Monitoring & Management

August 18, 2014
Learn how to leverage high-performance portable analyzers, open software, and PC Integration for field analysis and remote deployments.

New Mobile Device App by AR RF/Microwave

August 18, 2014

AR RF/Microwave's new mobile app is available as a free download from Apple iTunes and Google Play. This application is a quick and easy tool to access various content for AR‘s products. Home screen icons give you easy access to basic and full product descriptions, app notes, AR’s literature library, YouTube videos, contact information and social media icons. For more detail and to download the app, visit www.arww-rfmicro.com/html/ar-moblie-app.asp.

Evolutionary & Disruptive Visions Towards Ultra High Capacity Networks

August 18, 2014
With many groups now beginning to consider the drivers for 5th Generation wireless networks, this timely document includes contributions from 20 IWPC member organizations from around the world and aims to advance certain understandings and concepts for adoption in wireless systems to be deployed beyond the year 2020. This 89 page document covers a broad range of 5G topics with emphasis on mm-wave.

Increase Power Amplifier Test Throughput with the Keysight PXIe Vector Signal Generator and Analyzers

August 18, 2014
Read this application note for an overview of the key challenges in testing power amplifiers and front end modules with envelope tracking. Learn about how to reduce test cost, achieve fast throughput, and maintain high test quality using the modular Keysight M9381A PXIe VSG, and the M9391A or M9393A PXIe VSA, as well as how to perform high speed harmonic test using the M9393A PXIe VSA.

Simplified Millimeter Wave Intermodulation Distortion Measurements

July 16, 2014
The theories and operations of intermodulation distortion (IMD) are well understood. It is one of the key metrics in categorizing the linearity of active and passive electronic components and devices. There are various instruments available from leading equipment manufacturers to perform IMD measurement in the RF and microwave region - two signal generators, a power combiner and a spectrum analyzer; a vector network analyzer with a signal generator and a power combiner. However, extending the IMD measurement to the millimeter wave and sub-millimeter wave frequency ranges is quite another matter.

Cryogenic Probing Advances Development of New Technologies and Materials

July 16, 2014
A newly developed superconducting RF MEMS varactor provides additional capabilities for digital transmission, including tunable filters for improved signal selectivity and noise rejection. Development of the superconducting circuitry at cryogenic temperatures takes advantage of advanced probe station technology from Lake Shore.

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