| 摘要 |
PROBLEM TO BE SOLVED: To provide a noise reduction circuit, a noise reduction apparatus, a noise reduction method and a noise reduction program in which noise of a clock signal can be attenuated even when a plurality of radio circuits are connected with a function circuit and a common terminal. SOLUTION: A noise reduction circuit includes switching circuits 302 and 303 and a plurality of noise cancellation circuits 311 and 312. Each of the switching circuits 302 and 303 switches a passing route of a clock signal in accordance with a radio circuit, which receives a radio signal, among a plurality of radio circuits for receiving radio signals of different frequency bands. Each of the noise cancellation circuits 311 and 312 is disposed in the passing route switched by the switching circuits 302 and 303 for canceling from the clock signal noise of a different frequency band for each passing route. COPYRIGHT: (C)2011,JPO&INPIT
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