Antenna control apparatus and antenna system
AssigneeDenso Corporation
InventorTomonaga TAMARU
Life of this patent
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Abstract
An antenna system includes an antenna and an antenna control apparatus. The antenna control apparatus includes a control circuit, i.e., a control integrated circuit. The control circuit adjusts and boosts an antenna voltage to supply a required current to the antenna. The antenna voltage is maintained so as not to exceed a predetermined upper limit voltage threshold value. The control circuit is configured to determine a disconnection failure on the antenna when the antenna voltage detected by an overvoltage detection circuit reaches the upper limit voltage threshold value, or is boosted beyond the upper limit voltage threshold value.
Claims6
An antenna control apparatus, comprising:
- an antenna power source which adjusts an antenna voltage applied to an antenna;
- a voltage detection circuit which detects the antenna voltage;
- a current detection circuit which detects a current flowing through the antenna;
- and
- a control circuit which is configured to:
- adjust the antenna voltage by the antenna power source to supply a required current for transmitting a radio wave from the antenna, the antenna voltage being maintained not exceed a predetermined upper limit voltage threshold value;
- and
- determine a disconnection on the antenna when the antenna voltage detected by the voltage detection circuit is adjusted to exceed the upper limit voltage threshold value while the antenna voltage is adjusted.
Dependencies are inferred from the claim text.