System for determining total isotropic sensitivity(TIS) and related methods

Abstract

A test method for determining total isotropic sensitivity (TIS) of a mobile wireless communications device including a radio frequency (RF) receiver and an antenna coupled thereto may include measuring a sensitivity of the RF receiver, and measuring a three-dimensional (3D) gain pattern of the antenna independent of measuring the sensitivity of the RF receiver. The method may further include determining the TIS of the mobile wireless communications device based upon the sensitivity of the RF receiver and the 3D gain pattern of the antenna.

Description

technical field [0001] The present invention relates to the field of communication systems, and more particularly to performance testing and related methods in mobile wireless communication systems, such as cellular communication systems. Background technique [0002] Over the past decade, digital wireless (ie, cellular) devices have become very ubiquitous to consumers. As a result, in order to maintain high levels of consumer satisfaction, wireless carriers, manufacturers, and certification bodies have taken care to establish higher standards for the verification and certification process of cellular devices. [0003] To meet the needs of an increasingly diverse consumer market, operators offer a variety of wireless devices, such as cellular phones, personal digital assistants (PDAs), and smart phones, from multiple manufacturers. All of these given device types can work simultaneously on the same operator network. [0004] Wireless operators invest heavily in RF licenses...

AI Technical Summary

Problems solved by technology

Poor TIS can result in poor quality voice signals and can also alter coverage areas

Compared to the TPR test method, the current TIS test method suffers from the problems of lost base station signal (i.e., call termination), relatively large measurement uncertainties, and relatively long test times

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