Dong Yang, H. Yuksel, Christopher Newman, Changhyuk Lee, Zachariah Boynton, N. Paya, Miles Pedrone, A. Apsel, A. Molnar
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A fully integrated Software-Defined FDD transceiver tunable from 0.3-to-1.6 GHz
An ideal Software Defined Radio (SDR) requires a reconfigurable, intergrated, widely-frequency-tunable transceiver able to support different RX/TX duplex schemes. Here we present an integrated transceiver capable of supporting both TDD and FDD operation with >25dB integrated RX-TX isolation from 0.3-1.6GHz without any off-chip switches or filters. The transceiver uses an artificial transmission line (TL) and distributed PA to separate TX and RX. TX noise in the RX band is further suppressed by >13dB an RX-tracking PA degeneration circuit.
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