| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To stabilize convergence operation at the time of an impedance automatic matching in a fading environment, and to secure a receiving quality in a convergence process, in a radio communication apparatus which performs the impedance automatic matching of an antenna and a radio communication portion in order to reduce an impedance matching loss when a human body approaches. <P>SOLUTION: It has a radio section 3 which converts a baseband signal into the received signal, an impedance variable means 2 which adjusts an impedance between an antenna 1 and the radio section 3, a pilot signal extraction means 4 to extract a pilot signal from the baseband signal, a first line compensation means 5 which performs a line compensation using the output, an impedance control propriety detection means 7 to detect an impedance control propriety using the output, an impedance control means 8 to control the impedance variable means 2 using the output, a second line compensation means 6 which performs the line compensation using the pilot signal, and a demodulation portion 9 which performs a demodulation operation using the output. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
