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This letter presents a single-channel full-duplex receiver with tunable self-interference (SI) cancelling capability through LO phase shifting. The receiver takes advantage of high linearity of the passive mixer-first architecture to eliminate SI without degrading sensitivity due to inter-modulation distortion. The proposed receiver exhibits a DSB noise figure of 8.6–12.5 dB over an operating frequency...
Design of tunable multi-band time delay elements based on frequency translation is presented. The proposed topology exhibits time delay of multiple periods of the RF carrier. Two possible implementations of the proposed idea are presented and simulation results are shown for one such implementation. The implemented circuit exhibits an envelope delay of 2.5 ns with the RF carrier delay tunable from...
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