Featured Article
Aperture Tuning: An Essential Technology In 5G Smartphones
By Abhinay Kuchikulla, Qorvo

Antenna aperture tuning is essential to enable smartphones to operate efficiently over the ever-increasing range of RF frequency bands and support the transition to 5G. Smartphones need more antennas to support growing RF requirements such as new 5G bands, MIMO, and carrier aggregation (CA), but there is less space for these antennas due to changes in smartphone industrial design. As a result, antennas are becoming smaller, potentially reducing antenna efficiency and bandwidth. Aperture tuning compensates for this problem by allowing antennas to be tuned to operate efficiently on multiple bands and increasing Tx and Rx performance by 3 dB or more.

Resources
Design And Simulation Of 28 GHz Beamforming System And Antenna Array For 5G Network Base Stations
Application Note | Remcom

This example describes a more developed 28 GHz antenna array capable of forming multiple beams for use in applications such as 5G network base stations. The system consists of three parts: a Rotman lens beamformer with seven input ports and eight output ports, a series of stripline Wilkinson power dividers to split each Rotman output into eight equal signals, and an 8x8 patch antenna array. 

An Introduction To Programmable Attenuator Systems
Application Note | JFW Industries, Inc.

A programmable or step attenuator is externally controlled with maximum attenuation ranges from 0 dB to 127 dB, in steps as small as 0.1 dB. This app note discusses key components in a programmable attenuator system, as well as the best choices for general applications.

5G New Radio Solutions: Revolutionary Applications Here Sooner Than You Think
White Paper | By Keven Walsh, et al., Skyworks Solutions, Inc.

5G technologies promise to deliver higher data throughput, extremely low latency, and speeds up to 100 times faster than 4G. This paper explores the practical first steps of a roll out and focuses on the spectrum below 6 GHz as standards for millimeter-wave applications have yet to be determined.

RF And Microwave Machining Capabilities
Brochure | Corry Micronics, Inc.

Corry Micronics offers custom machined RF and microwave housings with the fastest turn-around times in the industry. Housing materials include aluminum, stainless steel, brass, copper, and engineered plastics for lightweight alternatives. Optional coatings include electroless nickel, gold, silver, and white bronze.

An Introduction To The 5G Frequency Spectrum
Article | Knowles Precision Devices DLI

5G networks plan to offer a hundred-fold increase in user data-rates which will require growth in bandwidth over what is currently available. This article introduces the 5G spectrum and explores some of the mechanisms behind the increase in bandwidths.

Featured Multimedia
A Quick Look At Pentek's SPARK Development Systems
 

Pentek's SPARK Development Systems are the quickest way to get up and running and start your application development. Each SPARK PC system includes a high-performance rackmount PC with Pentek hardware and software factor installed and tested allowing immediate "out of the box" deployment. SPARK Development Systems are available in PC and VPX platforms.

Wideband MIMO Handset Antennas Based On Theory Of Characteristic Modes
 

The 2017 FEKO Student Competition Winner, Ke Li, discusses the design of wideband MIMO handset antennas based on the theory of characteristic modes.

Bulletin Board
The Next Generation In Immunity Testing
 

AR’s new poster on Multi-Tone Immunity testing provides a reference to show just how AR’s MultiStar Multi-Tone tester can maximize your efforts by testing multiple frequencies simultaneously, thus increasing test speed and eliminating costly chamber bottlenecks.

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