Invention Grant
US09100078B2 RF receiver and digitally-assisted calibration method applicable thereto 有权
RF接收机和适用于其的数字辅助校准方法

RF receiver and digitally-assisted calibration method applicable thereto
Abstract:
A radio frequency (RF) receiver includes a digital tuning engine; I-path and Q-path analog filters, tuned by the digital tuning engine; and a digital compensation circuit. The digital tuning engine executes a RC (resistor-capacitor) time constant calibration to adjust respective cut-off frequencies of the I-path analog filter and the Q-path analog filter. The digital tuning engine executes a filter mismatch calibration to match the I-path analog filter and the Q-path analog filter. The digital tuning engine executes a filter residual mismatch calibration to match an I-path response from the I-path analog filter to the digital compensation circuit and a Q-path response from the Q-path analog filter to the digital compensation circuit.
Information query
Patent Agency Ranking
0/0