基于65纳米CMOS的28 GHz/39 GHz双频四元MIMO RX中频波束空间复用技术

2022 IEEE Radio Frequency Integrated Circuits Symposium (RFIC) Pub Date : 2022-06-19 DOI:10.1109/RFIC54546.2022.9863191

Robin Garg, Paul Dania, Gaurav Sharma, Armagan Dascurcu, Soumya Gupta, H. Krishnaswamy, A. Natarajan

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引用次数: 0

摘要

密集孔径毫米波MIMO RX前端将需要简化中频接口，特别是在必须支持多个5G NR频段的情况下。提出了首个采用波束空间频域复用(FDM)的双频28ghz和39ghz MIMO RX前端，实现了跨4个单元和28ghz / 39ghz频段的幅度/相位加权信号合并。FDM方案将四个波束空间输出置于四个不同的中频频率。该IC在每个元件中包含本地多相LO生成，功耗为516mW (32.3mW/波束/元件)，在65nm CMOS中占地14mm2。

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A 28 GHz/39 GHz Dual-Band Four-Element MIMO RX with Beamspace Multiplexing at IF in 65-nm CMOS

Dense-aperture mm-wave MIMO RX front-ends will require simplified IF interfaces, particularly when multiple 5G NR bands must be supported. The first dual-band 28 GHz and 39 GHz MIMO RX front-end with beam-space frequency-domain multiplexing (FDM) is presented that enables concurrent amplitude/phase weighted signal combining across four elements and 28 GHz/39 GHz bands. The FDM scheme places the four beam-space outputs at four different IF frequencies. The IC includes local multi-phase LO generation in each element, consumes 516mW (32.3mW/beam/element) and occupies 14mm2 in 65-nm CMOS.

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2022 IEEE Radio Frequency Integrated Circuits Symposium (RFIC)

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