发明名称 |
AUTOMATIC GAIN-CONTROLLED VHF/UHF ANTENNA TUNING APPARATUS |
摘要 |
<p>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. <IMAGE></p> |
申请公布号 |
EP1036434(A1) |
申请公布日期 |
2000.09.20 |
申请号 |
EP19980960736 |
申请日期 |
1998.12.04 |
申请人 |
THOMSON CONSUMER ELECTRONICS, INC. |
发明人 |
TINAPHONG, PRAPAN, PAUL;SHUI, YI |
分类号 |
H01Q1/36;H01Q1/38;H01Q5/00;H01Q9/16;H01Q21/30;H03G3/20;H03G3/30;H03J5/24;H04B1/18;H04L27/00;(IPC1-7):H03J5/24 |
主分类号 |
H01Q1/36 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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