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A 031-THz Orbital-Angular-Momentum OAM Wave Transceiver in CMOS With Bits-to-OAM
首款基于CMOS的0.31-THz轨道角动量(OAM)波收发芯片，支持动态模式切换与模式识别。
65nm CMOS, -4.8dBm EIRP, 154mW(发射)/166mW(接收)功耗, 2.1×2.6mm²面积
太赫兹轨道角动量CMOS收发机模式切换片上集成
▸首次在芯片上实现THz频段的OAM波收发功能
▸支持数字切换四种OAM模式（m=0, +1, -1及叠加态）
▸可重构为接收模式并实现>10dB的模式失配抑制
Abstract
This article reports the first chip-based demonstra-
tion (at any frequency) of a transceiver front end that transmits
and receives electromagnetic waves with a helical distribution of
wavefront phase [namely, orbital angular momentum (OAM)].
The CMOS chip consists of eight 0.31-THz modulator/detector
units, with an integrated patch antenna, which are placed in
a uniform circular pattern with a diameter of one free-space
wavelength. The chip transmits OAM modes that are digitally
switched among t