Creating a Complex Multipath Environment Simulation in an Anechoic Chamber - August 2010
Techniques for measuring over-the-air (OTA) performance of wireless devices with single antennas do not work as well for multiple antennas because they assume that the radiation pattern of the device is fixed such that the measured result is a snapshot of the device performance at any given instant in time.

Anechoic Chambers for Evaluating and Validating Telecommunication Equipment - April 2010
In recent years, enforcement of test and measurement standards for both performance validation and product conformity testing have provided a level platform for certifying telecommunication equipment as well as other electronic equipment. Unlike previous decades where the majority of this testing was conducted on outdoor test sites, today indoor shielded anechoic chambers are the primary hosting environment to facilitate the vast majority of test requirements. In addition to the obvious benefits of independence to weather and ambient-free test conditions, the close proximity and reliable test environment provided by an anechoic chamber also greatly accelerates the R&D and certification period.

EMC Test Site Qualifications - January 2010
Everyone in the EMC business is familiar wtih the traditional Normalized Site Attenuation test (NSA). However, in February of 2007 CISPR 16-1-4 was published complete with the new Site Voltage Standing Wave Ratio (SVSWR) test. At the time, the American National Standards Institute (ANSI) Accredited Standards Committee (ASC) C63^® had developed a draft proposal fro C63.4 (Draft 1 - May 20, 2005) called the Time Domain Reflectivity (TDR) measurement. The critical question addressed by this article is which method - SVSWR or TDR - more accurately provides an assessment of the test site.