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A Low-Power Radiation-Hardened K a-Band CMOS Phased-Array Receiver for Small Sat
一种用于小型卫星通信的低功耗抗辐射K a波段CMOS相控阵接收器
3.4mW功耗，-22dBm IIP3，3.8dB噪声系数，0.2mm²芯片面积
低功耗抗辐射K a波段CMOS相控阵接收器
▸创新点1：多耦合共栅极低噪声放大器（LNA）采用三个耦合电感，有效降低输入匹配阻抗，同时减小输入CMOS晶体管尺寸，显著降低功耗至3.4 mW，相比传统方案17.3-195 mW有显著提升。
▸创新点2：电流共享拓扑结构通过共享电流路径，优化了电路的功耗效率，进一步降低了整体系统的能耗，适用于低地球轨道小型卫星通信系统。
▸创新点3：内置180°相位调节器集成于LNA中，简化了相位调节电路的设计，提高了系统的集成度和可靠性，同时减少了芯片面积至0.2 mm²。
▸创新点4：磁调谐相位调节器（MTPS）在辐射环境下表现出极低的增益和相位退化，分别为0.06 dB/Mrad和0.4°/Mrad，是目前报道中最低的均方根相位和增益误差。
Abstract
This article introduces a low-power radiation-
hardened K a-band CMOS phased-array receiver for the low
Earth orbit (LEO) small satellite communication system. As the
available solar panel area limits the power consumption of the
receiver, a multi-coupling common-gate (CG) low noise amplifier
(LNA) with current-sharing topology and built-in 180 ◦ phase
shifter is proposed in this work to solve the power issue. The
multi-coupling LNA utilizes three coupling inductors to reduce
the input matching