White Papers

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Improve 5G Testing with Reliable Microwave/RF Cable Assemblies

The 5G test industry requires improved reliability of cable assemblies to help improve test outcomes. A significant portion of a test system’s stability and repeatability is determined by the precise performance of microwave/RF cable assemblies. Engineers should understand how cable assemblies affect the test system to maximize and optimize overall performance.


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Antenna Array Testing - Conducted and Over the Air: The Way to 5G

5G networks will need to offer more capacity and flexibility while lowering the operational expenses of the system. Two new technologies can simultaneously address both the increase in capacity and the increase in energy efficiency: Virtualization & Massive MIMO. The white paper provides an overview of test solutions addressing current and future requirements for antenna verification including both conducted and over-the-air (OTA) test methods, which result from applying Massive MIMO antenna technology.


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Phased Array Antenna Patterns—Part 2

This is the second article of our three-part series on phased array antenna patterns. In Part 1, we introduced the phased array steering concept and looked at the influencers on array gain. In Part 2, we’ll discuss grating lobes and beam squint. Grating lobes can be hard to visualize, so we’ll draw on their similarity with signal aliasing in digital converters, then use that to think of a grating lobe as a spatial alias.


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Combining MMIC Reflectionless Filters to Create Ultra-Wideband (UWB) Bandpass Filters

Ultra-Wideband (UWB) radio is defined as any RF technology utilizing a bandwidth of greater than ¼ the center frequency or a bandwidth greater than 500 MHz [1] [2]. While UWB has been a known technology since the end of the 19th century, restrictions on transmission to prevent interference with narrow-band, continuous wave signals have limited its applications to defense and relatively few specially licensed operators [1].


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COTS Software Defined Radio for 5G Development

"The latest SDR modules offer SoC solutions with integrated I/O, ARM processors and FPGAs. Combining these attributes with superior signal integrity, phase-coherent sampling and multi-channel transceivers a COTS SDR system is an ideal choice for a 5G development platform. This article will familiarize the user with SDR using a multi-purpose COTS platform to reduce the time to market."


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