A CMOS 0.5-2.5GHz Full-Duplex MIMO Receiver with Self-Adaptive and Power-Scalable RF/Analog Wideband Interference Cancellation
A CMOS 0.5-2.5GHz Full-Duplex MIMO Receiver with Self-Adaptive and Power-Scalable RF/Analog Wideband Interference Cancellation
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具有自适应和功率可扩展射频/模拟宽带干扰消除功能的 CMOS 0.5-2.5GHz 全双工 MIMO 接收器
DOI：
10.1109/rfic.2019.8701784
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Jin Zhou
中科院分区：
文献类型：
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作者：
Yuhe Cao;Jin Zhou
设计了一种65 nm CMOS 0.5-2.5GHz全双工MIMO接收机，在20 MHz带宽上具有≥ 24 dB的自适应射频/模拟干扰消除能力。LMS自适应电路与宽带RF/模拟干扰消除器和增益提升混频器优先RX共同设计并部分嵌入其中。自适应电路完全集成，功耗为14 mW，消除器可在1µs内适应未知通道。FD MIMO RX还具有功率可扩展性--当用作数字波束形成器时，FD RX的NF功率可扩展性使每个元件的抵消器DC功率几乎恒定，尽管抵消器的平方增加。
A 65nm CMOS 0.5-2.5GHz full-duplex (FD) MIMO receiver (RX) with self-adaptive ≥24dB RF/analog interference cancellation across 20MHz BW is presented. An LMS adaptive circuitry is co-designed with and partially embedded in a wideband RF/analog interference canceller and a gain-boosted mixer-first RX. With the adaptive circuitry fully integrated and consuming 14mW, the cancellers adapt themselves to an unknown channel in 1µs. The FD MIMO RX is also power-scalable -- when used as a digital beamformer, the NF-power scalability of the FD RX enables a nearly constant canceller DC power per element, despite a quadratic increase of cancellers.