UHF-VHF tuner having damping means to reduce interference in UHF band
AssigneeAlps Electric Co., Ltd.
InventorsSadayoshi Ijichi, Eiji Nishizawa
Life of this patent
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Abstract
An electronic tuner capable of selectively receiving the UHF band and high and low channels in the VHF band is described which has a suitable resistance provided across power supply terminals in order to improve the separation between the VHF mode and the UHF mode.
Claims6
In an electronic tuner having a VHF tuning portion including a resonant circuit having a switching diode for switching between a band of the lower channels of the VHF band and a band of the higher channels of the VHF band, and a UHF tuning portion, the improvement comprising damper means connected to said switching diode for supplying a voltage partially biasing said switching diode during operation of the UHF tuning portion whereby said switching diode will provide a resistance damping said resonant circuit.
Dependencies are inferred from the claim text.