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:
Apr. 28, 1998
Filed:
Mar. 14, 1997
Andrew F Tresness, Manlius, NY (US);
Martin L Zelenz, DeWitt, NY (US);
Tresness Irrevocable Patent Trust, Syracuse, NY (US);
Abstract
A filter for controlling the return path loss in a multi-channel communication system having forward and return paths. The filter comprises a forward path filter network, and a return path filter network. The forward path network passes signals in the forward path, and includes at least one resonant circuit component, such as a capacitor, which is coupled to the return path network. The return path network passes signals in the return path, and includes at least one resonant circuit, such as a series LC trap to ground. A combined resonant circuit is formed, at least in part, by the resonant circuit of the return path network and the resonant circuit component of the forward path network (e.g., a combined series LC trap to ground). The return path network further includes an attenuator network which is designed to attenuate the signals in the return path frequency band. Preferably, the attenuator network is a resistive network which provides a predetermined amount of flat loss.