Patent ID: 9184945
Filing Date: 2015-11-10
Classification: H04L

Abstract:
1. A method for compensating frequency dependent phase imbalance in a transmitter, the transmitter processing a baseband signal the baseband signal having a first component, a second component, and a angular frequency, the method comprising: (a) compensating the baseband signal with a predetermined delay amount to generate a compensated baseband signal; (b) inputting the compensated baseband signal to a conversion circuit to generate a radio frequency signal; (c) inputting the RF signal to a delay information extractor to obtain a correlation value related to information of the predetermined delay amount; (d) changing the predetermined delay amount to provide a changed predetermined delay amount and compensating the baseband signal again with the changed predetermined delay amount, and performing steps (b) and (c) again to update the correlation value; and (e) selecting a candidate delay amount from the predetermined delay amount according to the correlation value and compensating the transmitter by using the candidate delay amount.