APPARATUS FOR CALIBRATION OF SIGNAL IN SMART ANTENNA SYSTEM

摘要

The invention of the smart antenna system signal correction (calibration) device, the downlink time zone, generating a correction signal for each of the N number of transmitters and by extracting the signal from the compensation signal input from the insertion and transmission to the receiver, and then combine the generated correction signal correcting the calibration transmitter to transmit a signal for the transmission path, and , in the uplink time domain, generating a correction signal for the N receivers and extract the generated correction signal from the correction signal input from the transmission, and then inserted and the N receiver signal to the transmitter for the receive path calibration Combine In the beam-forming and correction block and the downlink time domain for correcting the received signal, modulates the signal input from the beam forming and calibration block to an RF signal and transmitted to the array antenna and couple the calibration signal transmitted by the antenna ring (coupling) to combine the correction and transmitted to the receiver, in the uplink time domain, and N transceiver blocks output by the beam forming and calibration by modulating the correction signal received from the receiver into baseband signals combine correction, in one transceiver of the N transceivers, in the downlink time-domain, modulating the calibration signal input from the transceiver to a baseband signal by the beamforming and calibration block, in the uplink time-domain, wherein the beam After the correction signal is input from the forming block and the modulation correction to the RF signal, including the transmitter for outputting the combined correction of N transceivers and separated by the N signal, it is possible to simplify the configuration of the smart antenna system, material cost has the advantage that it can reduce the.