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Interference Technology

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Antennas

Hybrid Microwave Coupler Covers 1.0 GHz To 4.0 GHz In Compact Package

 

Krytar, Inc., a manufacturer of ultra-broadband microwave components and test equipment, has released a new 90-degree hybrid coupler designed to perform a variety of functions, including splitting and combining signals in amplifiers, switching circuits, and antenna beam-forming networks used in a wide range of commercial and military applications. Measuring 3.16 inches (L) x … [Read more...]

|∆N SASAC | > 4dB, and What’s Next?

 

Note: This article has been translated from Polish to English. It can be found in its original language in the 2014 Europe EMC Guide. Jan Sroka, Professor, Warsaw University of Technology, Warsaw, Poland ABSTRACT The term "site attenuation" is used in the theory of electromagnetic fields as extension of the term "attenuation," which is well known in circuit theory. The site … [Read more...]

Bandpass Filter and Antenna Accessories Simplify Locating Network Interference in the Field

 

Anritsu Company has introduced new bandpass filters and a directional antenna for use with its Handheld InterferenceHunter designed to assist field technicians responsible for wireless network performance easily locate causes of network interference. The MA2700A InterferenceHunter handheld direction finding system, which incorporates a GPS receiver and antenna, electronic … [Read more...]

Verizon 700MHz LTE Service Distorts Time Warner Cable Signals

 

In North Carolina, customers of Time Warner Cable Company have linked the appearance of blurry, pixelated images on their televisions to nearby use of Verizon LTE smartphones. According to local station WRAL-TV in Raleigh, NC, Time Warner Cable recently moved some TV channels, including WRAL-TV, to the same broadband spectrum that serves Verizon’s 4G LTE data service. Verizon … [Read more...]

Combining Antennas and Solar Cells for Greater Efficiency

 

Researchers at the École polytechnique fédérale de Lausanne (EPFL) in Switzerland have combined antennas and solar cells in a breakthrough step towards the development of smaller and more lightweight satellites and autonomous antenna systems. Traditionally, telecommunication antennas and solar cells have been built separately to avoid interference, the researchers said. This … [Read more...]

New Standard Gain Horn Antennas Operate Up to 40 GHz

 

Microwave and RF component supplier Fairview Microwave, Inc. has announced the expansion of its line of standard gain horn antennas to provide engineers with a more complete and comprehensive selection for various calibration and testing applications. The company has added seven new gain horn antenna designs ranging in size from WR28 to WR430 with frequencies from 1.7 GHz up … [Read more...]

View Our Webinar, Cost-Effective Use of Close-Field Probing Part I

 

This webinar – number 1 in a series of 2 – describes simple, low-cost, cost-effective, qualitative EMC bench-testing techniques for emissions and immunity, using close-field probes (that many people make themselves) and low-cost portable measuring instruments. These practical techniques can be used in every stage of a product’s life cycle, from proof-of-principle to … [Read more...]

Electromagnetic Cloaking System Cancels Out Radio Waves

 

A new approach to invisibility cloaking from researchers at the University of Toronto, Canada has yielded an adaptable system capable of shielding objects of various sizes from radar detection. Developed by professor George Eleftheriades and Ph.D. student Michael Selvanayagam of The Edward S. Rogers Sr. Department of Electrical & Computer Engineering, the cloaking system … [Read more...]

Robot Arm Aids in High Frequency Antenna Calibration Breakthrough

 

A new antenna testing method from researchers at the Physical Measurement Laboratory (PML) in Colorado could lead to greater accuracy in the characterization and calibration of antennas for use at 50 GHz to 500 GHz. Currently, “there are no international reference standards for antennas at these frequencies,” team member David Novotny of the Radio-Frequency Fields Group in … [Read more...]

Using Near-Field Measurement to Reduce Investigation Time and Cost

 

NOTE: This article has been translated from French into English. It can be found in its original language in the 2014 EMC Europe Guide. Sébastien Serpaud, EMC Design Support, NEXIO, Toulouse, France; sebastien.serpaud@nexio.fr Sebastien Ocquidant, EMC Specialist, EATON, Montbonnot St. Martin, France; sebastienocquidant@Eaton.com Jean-Philippe Tigneres, EMC Specialist, BARCO, … [Read more...]

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