Newsletter | September 10, 2019

09.10.19 -- Spotlight On Amplifiers And Transistors

 
Spotlight On Amplifiers And Transistors
Introduction To TMD Synthetic Aperture Radar Amplifiers
Article | TMD Technologies

Amplifiers for synthetic aperture radars (SAR) or imaging radar have special requirements associated with the application where they are used. TMD has been involved with ISAR, SAR, and GMTI since their inception in the early 1990s and has a record of reliable supply and operation performance.

Balancing Linearity And Efficiency In A Power Amplifier
Article | By Ryan Foster, NuWaves Engineering

Achieving both high linearity and high efficiency together in a radio frequency (RF) power amplifier (PA) system is challenging. Typical designs for highly efficient PAs involve operating devices in their nonlinear range, i.e., at or near compression.

Linearity Measurements On RFFE Components
Application Note | Rohde & Schwarz GmbH & Co. KG

Components in the RFFE (radio frequency front end) cause distortions that limit the performance and throughput in communications systems. This app note demonstrates individual RFFE component and complete RFFE linearity measurements used to characterize these components' distortions.

Application Fixture For Counter-IED Power Amplifier Applications Using Two CG2H40010F GaN HEMTs
White Paper | Wolfspeed, A Cree Company

Wolfspeed developed an application circuit that demonstrates the CG2H40010F's ability to operate between 500 MHz to 3000 MHz for satcom applications. This app note describes typical performance and what can be expected when evaluating the application fixture.

Resources
EMC Test System Power Amplifier Checks
Article | A.H. Systems

This article describes a test procedure where the small signal performance data of an amplifier is gathered and checked against previously recorded data. This is a fault-finding step that establishes the health of the preamplifier.

RF Amplifier Catalog
Catalog | AR Modular RF

AR Modular RF products have a variety of uses in a number of diverse applications including military, government, and civil communication systems; manufacturing processes and testing; as well as in high-tech medical equipment, remote data collections, and weather monitoring systems.

Spectral Efficiency And Filter Temperature Stability
Article | Knowles Precision Devices DLI

This article discusses the use of the Shannon-Hartley Theorem in the context of 5G millimeter-wave applications and how it may be used to find the number of bits/second expected in each section of bandwidth. This, in turn, relates to spectral efficiency and filter temperature stability.

Sponsor
  21st Annual Global MilSatCom
 

Will you be joining us at Europe’s leading military communications event for satellite professionals — Global MilSatcom, taking place in London, U.K. on the 5th, 6th, and 7th of November 2019? With only nine weeks to go, the final early bird discount is expiring this month. To secure your seats at the best rate, book by September 30 to save £100!

Featured Multimedia
AR 50 Year Anniversary
 

AR has been bringing the RF and microwave industry new amplifier technologies for a half a century!

Bulletin Board
The AR “Orange Book Of Knowledge” - 50th Anniversary Edition
 

The Orange Book of Knowledge (OBK) has grown into much more than we at AR could have ever imagined. For many engineers, this resource book has turned into the “go-to” source for everything and anything related to EMC.

 

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