| 摘要 |
PROBLEM TO BE SOLVED: To reduce the number of cables required for calibration processing to shorten cable length. SOLUTION: An antenna terminal 24 is used for connecting an antenna. A coupler 26 branches a signal line used in calibration processing from a signal line for transmitting and receiving an RF signal of data communication. A cable 206 for calibration between couplers connects between couplers 26. An antenna side switch 28 switches over signal lines used together with a signal processing device side switch 34, according to transmission and reception. A PA 30 amplifies an RF signal to be transmitted. An LNA 32 amplifies a received RF signal. A terminal 36 for a signal processing device is used for connecting the signal processing device. A downlink signal calibration terminal 40 is used for connecting the signal processing device for calibration processing. An uplink signal calibration terminal 38 is used for connecting a termination unit. COPYRIGHT: (C)2004,JPO&NCIPI
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