The AD6600/AD6620 Diversity Receiver chipset is a highly integrated chipset that reduces the size and cost of base station receivers. It incorporates Automatic Gain Control, Received Signal Strength Indicator, high-resolution Numerically Controlled Oscillator, and digital filtering on-chip. The chipset can address various air interface standards, including GSM, CDMA, IS136, and PHS, as well as proprietary modulation schemes for paging systems and wireless fixed access receivers.