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.

Abstract: A wide-band self-tuning antenna system for the reception of VHF/UHF signals includes planar antenna elements located on both the surfaces of a printed circuit board and a tuner unit which includes a plurality of matching networks for the respective plurality of bands of frequencies. The planar elements on the respective surfaces of the printed circuit board are substantially identical in shape.