Featured Articles

91. Introduction To TMD Synthetic Aperture Radar Amplifiers 7/16/2019

    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.

92. Cross-Coupling Between A 3G Transmitter And A Cable Bundle 7/16/2019

    This paper explains how to compute cross-coupling effects between a cable bundle and 3G antenna mounted on a vehicle using the cable modeling interface in FEKO. It also demonstrates FEKO GUI elements useful for investigating the cross-coupling between transmitters and cable bundles.

93. The AR “Orange Book Of Knowledge” - 50th Anniversary Edition 7/15/2019

    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.

     

94. 5G Core Network – Architecture, Network Functions, and Interworking 7/15/2019

    This article is dedicated to describing the main components of the 5G Core Network -- as defined by the 3GPP – including an overview of the architecture, a description of the key individual network functions, and an example of 5G interworking with LTE.

95. Biconical Antenna Selection 7/12/2019

    For many years most regulatory standards called for the use of a half-wave dipole antenna set for frequencies above 20 MHz. However, to reduce test time, broadband antennas such as the biconical antennas began to be accepted. 

96. Antenna Factor Calculations And Deviations 7/12/2019

    In recent years, the use of a term call "Antenna Factor" in EMC and spectrum pollution work has become very important. There has been a great need for measuring field intensity and/or power density as accurately and conveniently as possible.

97. Using An Application Fixture (CGHV27060MP-AMP3) For Tactical Communication Radios 7/9/2019

    Wolfspeed, a Cree Company, has developed an application circuit that demonstrates the ability for the CGHV27060MP to operate between 800 MHz to 2700 MHz for tactical communication power amplifier applications. 

98. Receiver Protector: Theory Of Operation 7/8/2019

    This article presents the reader with a basic understanding of receiver protector technology and discusses the various available types of receiver protector forms, their strengths and weaknesses, and how best to use them.

99. Multi-Stage Power Amplifier Reference Design Guide For Military Communications, Operating At 50 V And 100 W 7/8/2019

    Wolfspeed, a Cree company, has developed application fixtures for three catalogue devices – the CMPA0527005F, CGHV40030F, and the CGHV40100F – to cover 0.5 GHz to 2.5 GHz for electronic protect/jamming power amplifier, and other military communications applications. 

100. Design And Performance Of High-Efficiency, Ka-band GaN Power Amplifiers 6/27/2019

     This white paper reports the design and performance of state-of-the-art GaN MMICs and a fully packaged Ka-band SSPA. Incorporating harmonic tuning, the MMICs produce power levels up to 10 W CW with efficiencies in the high thirties (42% peak) at frequencies of 30 to 34 GHz.