A digital down converter (DDC) can be provided in a digital radio receiver front end to produce baseband I and Q signals using mixing, decimating and narrow and wide filtering dependent upon the nature of the signals. After receiving a single wide IF signal from the IF tuner, a single IF ADC converts...http://www.google.com/patents/US7526254?utm_source=gb-gplus-sharePatent US7526254 - Digital radio front end with minimized IF signal path
