| 摘要 |
PROBLEM TO BE SOLVED: To provide a radio communication device which eliminates the influence of noise from an information processing apparatus by a mechanism in the radio communication device. SOLUTION: When using a card type radio communication device 902 as a unit, a phase quantity of antennas 903 to provide a desired beam is saved in a memory 905 inside the card type radio communication device 902, and communications are performed while fixing phases by using the phase quantity. When performing data communications while loading the card type device into a computer or mobile information terminal 901, a beam is formed by adjusting a phase quantity of phases of antennas to an internal noise source 908 of the computer or mobile information terminal 901, a null point 910 is created in the direction of the noise source and adaptive operations are performed. In such a case, the phase quantity is calculated by a high-speed CPU 907 of the computer or mobile information terminal 901 and based upon its coefficient, the adaptive operations are performed on the side of the card type radio communication device 902. COPYRIGHT: (C)2004,JPO
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