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:
Nov. 06, 2001
Filed:
Nov. 17, 1997
Andrew E. Bowyer, Indianapolis, IN (US);
Daniel K. Chappell, Fishers, IN (US);
Wavetek Corporation, Indianapolis, IN (US);
Abstract
A receiver circuit, which may be used in a leakage detector, includes an RF input, a narrow band filter, and a direct demodulator. The leakage detector in which the receiver circuit may be used is operable to measure leakage in a communication system, the communication system operable to transmit broadband communication signals comprising one or more radio frequency carrier signals modulated by one or more baseband communication signals, wherein each radio frequency carrier signal has a channel frequency. Essentially, the exemplary receiver circuit according to the present invention is operable to generate a baseband leakage signal. To this end, the RF input is coupled to a source of broadband communication signals and receives a broadband communication signal therefrom, the broadband comnunication signal including a first signal associated with a first channel frequency. The narrow band filter is operably coupled to the RF input to receive at least a portion of the broadband communication signal and producing a filtered first signal therefrom, the narrow band filter having a Q value at least on the order of 1000 and further having a pass band that includes the first channel frequency. The direct demodulator is coupled to the narrow band filter, and is operable to generate a baseband leakage signal from the filtered first signal.