| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna circuit to avoid reception trouble due to higher distortion without affecting antenna characteristics. SOLUTION: The antenna circuit includes a signal line, a diode, and a filter. The signal line is connected to an antenna. The diode is connected between the signal line and ground. The filter is connected between the signal line and diode or between the diode and ground, and cuts off a disturbance wave input to the signal line. Consequently, even when the disturbance wave is input, no diode passing current is generated, so harmonics and higher distortion generated by applying a voltage between terminals of the diode can be prevented from being generated. COPYRIGHT: (C)2008,JPO&INPIT
|
