Antennas Case Studies, White Papers, & Application Notes

  1. Utilizing Dielectric Resonator Antennas For 5G Applications
    12/5/2016

    As 5G technologies are developed to increase wireless communication data rates by a factor of 100, the design specifications of radio frequency (RF) electronics have become much more rigorous, especially for millimeter-wave (mm-wave) applications. As an alternate solution to traditional low radiation and low gain antennas, Dielectric Resonator Antennas (DRAs) operate with less conduction losses and feature high radiation efficiency when excited properly for mm-wave frequencies and beyond. This white paper presents additional DRA characteristics, and the advantages of using them for 5G technology development.

  2. Synthesizing UHF RFID Antennas On Dielectric Substrates
    12/20/2016

    Radio-frequency identification (RFID) technology uses electromagnetic fields to automatically identify and track objects with tags containing electronically stored information. This application note discusses a new approach to optimizing RFID antennas for this technology with the use of the new NI AWR Software product AntSyn™ antenna synthesis and optimization technology. This method employs evolutionary algorithms (EAs) to explore the design space and automatically determine the best performance options. This application note features a new method used for optimizing radio-frequency identification (RFID) antennas and describes two examples of RFID antennas created using this technology.

  3. Carrier Aggregation In Mobile Devices
    2/10/2016

    Carrier aggregation (CA) enables mobile network operators worldwide to provide faster data, and allows mobile devices to communicate on multiple LTE bands simultaneously. This, however, creates the challenge of avoiding interference between the bands while keeping up good reception and battery life. Multiplexers are an excellent solution for CA combinations that use closely spaced bands since they provide isolation between and within bands, while allowing them to connect to the antenna at the same time. This white paper discusses the challenges of carrier aggregation, and the important benefits of using multiplexer solutions to solve them.

  4. Comparing Spatially Separated SISO & Co-Located MIMO Antennas Within MIMO Systems
    10/14/2015

    This application note discusses how co-located MIMO performs as well as or better than spatially separated SISO antennas while providing a cheaper alternative.

  5. The Effect Of Low-Quality Antennas On Network Backhaul
    6/11/2016

    This paper describes the effects of various quality variables on microwave antenna performance, and provides insight into the long-term consequences of using a low-cost/ poor-quality antenna. It demonstrates the effect of operators’ preference for low-cost antennas without considering the total cost of ownership, as well as possible ill effects on their quality of service.

  6. Simulation Of Beamforming By Massive MIMO Antennas In Dense Urban Environments
    10/25/2016

    This application note presents a new predictive capability for simulating massive MIMO antennas and beamforming in dense urban propagation environments.  Wireless InSite MIMO predicts the complex channel matrix for mobile devices within a small cell. Beamforming techniques are used to display the actual physical beams and evaluate signal power and interference, including pilot contamination distortion.

  7. High-Gain Broadband Printed Yagi Antenna For Applications In ISM Bands
    7/6/2016

    In this work, a high-gain broadband printed Yagi directional antenna for applications in ISM bands (686 and 915 MHz) is presented. The proposed antenna was designed to be implemented in a wireless system, devoted to water and wastewater level and underground flow measurements. 

  8. Designing Printed Ka-Band Reflectarrays With Offset Feed
    8/23/2016

    A printed reflectarray is a high-gain, low profile, low-cost antenna that combines the advantages of parabolic reflector antennas with microstrip arrays. This white paper demonstrates how to easily create a printed reflectarray and its simpler feeds through the use of FEKO simulation software.

  9. Characteristic Mode Analysis For Ultra-Wideband Antenna Design
    7/28/2015

    Characteristic mode analysis (CMA) to provide new insights that would be difficult to obtain otherwise. CMA provides insights into physics of the problem, as it produces the radiating current modes that fit naturally on a given geometry. This application note discusses how CMA insights may be used to  improve performance of an ultra-wideband antenna.

  10. Designing An Impedance Matched Antenna: FEKO And Optenni Lab
    7/28/2015

    Many designers will find Optenni Lab useful in creating antenna designs that will conform to any impedance requirement. This application note talks about the Optenni Lab, and examples of its use and value in the design of a DVB antenna, and a compact GPS and Wi-Fi Antenna.