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. 11, 2008
Filed:
Oct. 28, 2004
Szu-hsien Wu, Hsinchu, TW;
Szu-Hsien Wu, Hsinchu, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
A television tuner system includes a low noise amplifier (LNA) for receiving and amplifying television signals, a quadrature mixer coupled to receive the amplified television signals and generate first intermediate frequency (IF) quadrature signals, a complex mixer coupled to receive the IFquadrature signals and generate second intermediate frequency (IF) quadrature signals, a polyphase filter coupled to receive the IFquadrature signals and generate IFreal signals, a channel select filter (CSF) coupled to receive the IFreal signals and select signals within a desired channel, and an IF variable-gain amplifier (VGA) for amplifying the signals within the desired channel selected by the CSF.