| 摘要 |
PROBLEM TO BE SOLVED: To provide a direct-conversion receiver based on a multi-port junction device for compensating the IQ imbalances of demodulated symbols without the need for phase and amplitude imbalance information. SOLUTION: The multi-port junction device 10 combines the received RF signal and the local oscillating signal to generate three output signals by using power detectors PD, the IQ calculator 30 calculates the I component and Q component in compliance with the output signals of the power detectors as well as parameters α and βgenerated by the parameter calculator 40 to compensate IQ imbalances. |
