Title:
【発明の名称】VHF/UHF自己同調平面アンテナ・システム
Document Type and Number:
Japanese Patent JP2001526481
Kind Code:
A
Abstract:
An antenna tuning apparatus for VHF/UHF antenna comprises an automatic gain control (AGC) arrangement, including an amplifier, the gain of which is controlled by the AGC arrangement, and a plurality of impedance matching networks which are coupled between an antenna input of the tuning apparatus and the AGC-controlled amplifier. A remote controller is provided to select both channels of a television apparatus, for which the tuning apparatus provides VHF/UHF signals, and proper matching networks suitable for respective ones of selected channels simultaneously. Each one of the plurality of matching networks exclusively provides the AGC arrangement with a respective group of RF signals which includes a plurality of receivable broadcast channels. The gain of the amplifier is controlled in response to the level of the group of RF signals.
Inventors:
Teina Huong, Prapin Paul
Yui
Yui
Application Number:
JP2000524838A
Publication Date:
December 18, 2001
Filing Date:
December 04, 1998
Export Citation:
Assignee:
Thomson Consumer Electronics Incorporated
International Classes:
H01Q1/36; H01Q1/38; H01Q5/00; H01Q5/25; H01Q5/321; H01Q5/357; H01Q9/16; H01Q21/30; H03G3/20; H03G3/30; H03J5/24; H04B1/18; H04L27/00; (IPC1-7): H01Q21/30; H01Q1/36; H01Q1/38; H01Q5/00
Attorney, Agent or Firm:
Katsunori Watanabe