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A reconfigurable IF receiver supporting intra-band non-contiguous carrier aggregation is proposed. By utilizing the harmonic rejection (HR) mixer with 12-phase LOs and phase-shift-adding configuration, the IF receiver could eliminate the channel interferences, which is robust to the mismatch. The IF receiver has been implemented in 65nm CMOS, and the simulate d results show that the interference between...
This paper describes circuit techniques for robust IR-UWB receiver design for high data rate centimeter range communications. For high data rate transmission, multiple frequency bands are utilized to increase transmission power for improved link margin, in the receiver design, a multiband LNA, a fully differential squarer, and a high speed parallel interlacing integrator are developed for high speed...
A fully-integrated programmable interference canceller is presented for the cognitive radio RF front-end, which is based on a double-loop cancellation technique. For a frequency division duplexing system (FDD), this interference canceller can suppress the Tx leakage and its associated noise at the Rx band. A negative delay line and a positive delay line are required for the double cancellation paths...
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