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Commercial and Military Innovation at a Crossroads for Radar and Wireless Networking Applications

by Tony Fischetti, Principal Technology Architect, MACOM From the modern battlefield to commercial wireless infrastructure, bandwidth demands are growing exponentially. In the aerospace and defense (A&D) market, these demands are being driven by the need for low-latency communication and enhanced situational awareness and responsiveness among warfighters deployed across ground, sea and air domains, serviced by […]

Over the Air Testing for Antenna Arrays: Challenges and Solutions

by Reiner Stuhlfauth, Technology Marketing Manager, Rohde & Schwarz, Munich and Dr. Corbett Rowell, Technology Marketing Manager, Rohde & Schwarz, Munich 5G will apply multiple antenna systems and combine them with enhanced spatial multiplexing to provide data for multiple users, known as massive MIMO. Despite their advantages, the industry is facing some challenges to characterize […]

An Overview of Antenna Systems in Millimeter-Wave Radar Applications

by Pasternack Millimeter-wave (mm-wave) technology is playing a central role in next generation radar and wireless communications. With the already massive demand for spectrum space in the 2.4/5 GHz bands, the Ka-Band and beyond provide expansive spectrum availability and flexibility. Already implemented in automotive and many security applications, mm-wave imaging radar enables self-driving and nearly […]

Transmit LO Leakage (LOL)—an Issue of Zero-IF that Isn’t Making People Laugh Out Loud

by Dave Frizelle, Analog Devices Inc. There are several major advantages to zero-IF architecture. However, there are also some challenges that need to be overcome. Transmit local oscillator leakage (referred to as transmit LOL) is one such challenge. Uncorrected, transmit LOL will produce an unwanted emission within the desired transmission, potentially breaking system specifications. This […]

Connecting RF Test and Measurement Equipment to an Antenna Under Test

by Clayton Karmel, Principal, Pdicta Corp & Ben Maxson, Director, Services and Support, Copper Mountain Technologies (All images are at end of article) Connecting RF test and measurement equipment to an Antenna Under Test (AUT) usually involves tradeoffs among measurement accuracy, electrical considerations, cost, and mechanical ruggedness. In this article, we describe some aspects of […]

Non-Cellular IoT Device Growth Changing WLAN Test Requirements

by Brian Davis, Field Applications Engineer, Anritsu Company Non-cellular IoT devices are expected to experience such strong growth that they will exceed the number of mobile phones in 1-2 years. In fact, of the 29 billion connected devices forecasted by 2022 (according to a recently published market report by Ericsson), 14.2 billion of them will […]

Design of a Broadband L-band 160W GaN Power Amplifier Using SMT Packaged Transistors 

by  Plextek RFI & Qorvo The design of a broadband power amplifier for L-band radar and wideband communications applications is described. Using a state-of-the-art Qorvo transistor in a cost-effective SMT plastic package, the amplifier has 160W output power between 1.2GHz and 1.8GHz and a typical efficiency of 55% for the complete connectorized PA. Particular consideration […]

Understanding The Limitations Of Modern Military Radio Testbeds

by JFW Industries, Inc. In the past 10 years, the use of military radios has increased dramatically, and, in turn, so has the need to test those radios. In part, this increase stems from the advent of such military-based communication applications as the land mobile radio system and tactical networks, as well as the introduction […]