The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 25, 2003
Filed:
Jun. 22, 2000
Brian H Hick, Calne, GB;
David A Sawyer, Swindon, GB;
Mitel Semiconductor Limited, Swindon, GB;
Abstract
In a multi-channel electrical communication system , a method of estimating the interference level in a test channel due to the intermodulation of two or more other channels, where each channel is centred upon a carrier frequency. The method comprises, for a given m-th order mode, an initial step of identifying the set(s) of carrier frequencies, the m-th order linear combination of which gives rise substantially to the carrier frequency of said test channel. This process is carried out by a computer . For the or each of the identified set of carrier frequencies, signal generators are tuned to respective ones of the carrier frequencies. The generated signals are applied to an input of the communication system , and the intermodulation interference at the carrier frequency of the test channel is measured at an output of the system