| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna device for preventing transitional lowering of power supply voltage even if consumption of a large pulse current is caused by a transmission pulse, and capable of reducing variations in each power source caused by lowering of the power supply voltage even if a plurality of power sources are disposed. SOLUTION: The device includes a power amplifying unit for outputting to an external antenna after amplification; a stabilized power source for supplying power source to the power amplifying unit; a module control circuit for transmitting a pulse signal for indicating amplifying time of the power amplifying unit by a transmission indicating signal; a transmission reception module for storing the module control circuit, the power amplifying unit, and the stabilized power source; a direct current variable voltage source having a control terminal for supplying power source to the stabilized power source via a power supplying line after varying an output voltage; and a control device for simultaneously transmitting a transmission indication signal to the control terminal of the direct current voltage source and the module control circuit, wherein the direct current variable voltage source boosts a direct current output voltage within a transmission period of the transmission indicating signal. COPYRIGHT: (C)2009,JPO&INPIT
|
