A silicon photonics millimeter-wave (mm-wave) radar receiver (RX) integrated circuit (IC) for a multiple-input–multiple-output (MIMO) imaging radar is presented. Optical clock distributed over fiber enables coherent operation of several transceiver frontends for large apertures and finer angular resolution in the MIMO imaging radars. All electronic and photonic components needed to receive the optical clock signal, the electronic radio frequency (RF) signal, and the in-phase quadrature (IQ) downconvertion to the baseband is integrated in the RX frontend IC. The RX chip supports optical clock signals at 1310- and 1550-nm optical wavelengths. The chip is implemented in IHPs pre-production photonic 250-nm SiGe BiCMOS technology. At an intermediate frequency (IF) of 1 MHz, the measured conversion gain (CG) is 6.95 dB at an RF of 66 GHz and −11.18 dB at an RF of 77 GHz from −5-dBm optical modulation amplitude (OMA) and −13-dBm RF power. The RX IC dissipates 770 mW and is operated with a single 3.6-V power supply. For the realization of an optical receive path, an off-chip lithium niobate (LiNbO3) Mach–Zehnder modulator (MZM) was used. The optical receive path achieves a saturated OMA of −6 dBm at an RF of 77 GHz and at an IF of 1 MHz.

中文翻译：

---

用于采用光时钟分配的毫米波大孔径 MIMO 雷达的硅光子雷达接收器 IC


提出了一种用于多输入多输出 (MIMO) 成像雷达的硅光子毫米波 (mm-wave) 雷达接收器 (RX) 集成电路 (IC)。通过光纤分布的光时钟可实现多个收发器前端的一致操作，从而在 MIMO 成像雷达中实现大孔径和更精细的角分辨率。接收光时钟信号、电子射频 (RF) 信号以及同相正交 (IQ) 下变频至基带所需的所有电子和光子组件均集成在 RX 前端 IC 中。 RX 芯片支持 1310 和 1550 nm 光波长的光时钟信号。该芯片采用 IHP 预生产的光子 250 nm SiGe BiCMOS 技术实现。在 1 MHz 的中频 (IF) 下，从 -5 dBm 光调制幅度 (OMA) 和 - 测得的转换增益 (CG) 在 66 GHz RF 处为 6.95 dB，在 77 GHz RF 处为 -11.18 dB。 13dBm 射频功率。 RX IC 功耗为 770 mW，采用 3.6V 单电源供电。为了实现光接收路径，使用了片外铌酸锂 (LiNbO3) 马赫-曾德调制器 (MZM)。光接收路径在 77 GHz RF 和 1 MHz IF 下实现了 -6 dBm 的饱和 OMA。