Patent ID: 8406704

Claim:
A radio frequency (RF) integrated circuit comprising: an RF receiver that generates inbound data based on an inbound RF signal; a RF transmitter that includes: a transmitter processing module that generates a processed signal based on outbound data, wherein the processed signal includes one of: a baseband signal and a low intermediate frequency signal; a programmable delay module, coupled to the processing module, that generates a plurality of delayed signals from the processed signal, wherein each delayed signal is scaled based on one of a plurality of coefficients, wherein values of the plurality of coefficients are selected based on a control signal; an up-conversion module, coupled to the programmable delay module and the transmitter processing module, that up-converts the processed signal and the plurality of delayed signals to generate a plurality of up-converted signals; a combining module, coupled to up-conversion module, that combines the plurality of up-converted signals to generate a shaped-spectrum signal; and a radio transmitter front-end, coupled to the combining module, that generates a transmit signal based on the shaped-spectrum signal; and a processing module, coupled to the programmable delay module, that generates the control signal to control a spectrum parameter of the transmit signal.