Tunable Quasi-Circulator Based on a Compact Fully-Reconfigurable 180° Hybrid for Full-Duplex Transceivers

In this paper, a tunable quasi-circulator (QC) is proposed, which consists of a compact fully-reconfigurable 180° hybrid and two amplifier stages in the transmitter (TX)- and receiver (RX)-paths, respectively. Such hybrid is implemented by six varactor-tuned phase shifters, which can not only achiev...

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Veröffentlicht in:	IEEE transactions on circuits and systems. I, Regular papers Regular papers, 2019-08, Vol.66 (8), p.2949-2962
Hauptverfasser:	Deng, Zhixian, Qian, Huizhen, Luo, Xun
Format:	Artikel
Sprache:	eng
Schlagworte:	180° hybrid Amplifiers Circulators Full-duplex Impedance Interference cancellation isolation Noise levels Noise measurement Phase shifters PIN diodes Power efficiency quasi-circulator (QC) reconfigurable circuit Reconfiguration Resistors Transceivers
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