| 摘要 |
PURPOSE:To prevent a reception signal intensity indication (RSSI) for each channel in a digital cellure telephone system or the like from being affected due to the ripple, etc., of an amplifier circuit and to enhance the accuracy thereof without temperature dependency. CONSTITUTION:After conversion to first and second intermediate frequency (IF) signals 1 and 2 at an IF signal conversion integrated circuit (IC) 60, the RSSI is outputted at an RSSI circuit 72 in an RSSI signal processing IC 70. The data of comparing real reception intensity gain with reference reception strength gain for each channel are obtained in advance, and gain correction data are prepared for each channel and stored in a ROM 90 for gain correction. In the case of operating a the radio communication equipment, an A/D converter 88 converts the RSSI of the circuit 72 to a digital signal, the signal is inputted to the ROM 90 as an address, and a correspondent gain correction received signal intensity indication signal CRSSI is obtained. The temperature is similarly compensated as well. |
