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Interference Technology

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Antennas

Field Generation Test System Fully-Shielded To Prevent EMI Interference

 

AR RF/Microwave Instrumentation has designed a complete field generation test system that is fully shielded, making it ideal for use in an anechoic chamber without being susceptible to or causing interference.Model AS18013 houses a variety of field generation equipment in two air-conditioned EMI-shielded equipment racks. Among the included equipment is the SC1000M3 system … [Read more...]

Reporters Take Field Trip to an Apple Laboratory

 

A New York Times reporter in a recent tour of Apple’s EMC Laboratory described the company’s anechoic chamber and other features. The visiting press corps was led in and out of a series of specialized chambers, including one with a large antenna-studded arch that a tester can sit under to get a precise profile of the radio environment surrounding a human cellphone user.Read … [Read more...]

Engineers Test iPhone 4 Signal-Loss Problems

 

After testing three iPhone 4s in the controlled environment of a radiofrequency isolation chamber, Consumer Reports engineers confirmed that there is a problem with the iPhone 4’s reception. In the RF room, which is impervious to outside radio signals, the test engineers connected the phones to a base-station emulator, a device that simulates carrier cell towers. The engineers … [Read more...]

iPhone Antenna Design Absorbs EM Waves

 

Some of the reception problems with Apple’s iPhone 4 have been linked to the product’s antenna, which is an unusual design in that it circles the entire perimeter of the device. Phone makers typically try to place the antenna in places the user is less likely to touch in order to make a call. But with iPhone 4, unless you put a insulating cover around the antenna, the design … [Read more...]

Conical Horn Antennas Feature Frequency Range of 4-26.5 GHz

 

ETS-Lindgren announced the availability of its new Model 3163 series conical horns antennas with a frequency range of 4 GHz to 26.5 GHz. The high gain (over 16 dBi) antennas are designed for use as feeds in tapered anechoic chambers, as well as in applications requiring high gain and linear polarization. These high gain horns exhibit improved reflectivity levels in the quiet … [Read more...]

Software Models Large Platforms

 

The latest version of the XGtd electromagnetic (EM) simulation antenna modeling software from Remcom is designed for performing analysis of far-field radiation patterns, radar cross sections (RCSs), and electromagnetic interference and electromagnetic compatibility studies on electrically large platforms.Based on Geometric Optics and the Uniform Geometrical Theory of … [Read more...]

New U.S. Navy Test Facility Includes Anechoic Chamber

 

The U.S. Navy’s newest research and development facility, built with laboratories to support the combat system certification of warships, officially opened for business May 17 when the ribbon was cut in front of 250 people. Capt. Sheila Patterson, commander for the Naval Surface Warfare Center Dahlgren Division, said the facility includes an advanced anechoic chamber to test … [Read more...]

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