Millimeter wave AlGaAs/InGaAs 2DEG-CCDs

R. Colbeth, R. Larue, G. Davis, C. Yuen, C. Webb, C. Shih, R. Weiss
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引用次数: 4

Abstract

A two-phase, InGaAs channel 2DEG-CCD (charge coupled device) intended for millimeter-wave signal acquisition and delay is presented. Signal delay versus clock frequency has been measured from 1 MHz to 14 GHz, verifying CCD operation. The input-to-output transfer function is linear with a 1 dB compression point at 2 dBm and a 3rd harmonic intercept at 35 dBm. A charge transfer efficiency (CTE) of 0.99 has been measured at 4.73 GHz. Two-dimensional transient simulations show that the charge packet transfers at saturation velocity, and that CTE degradation results primarily from charge trapping in interelectrode parasitic wells. The simulations predict that CTE greater than 0.9999 is achievable at clock frequencies up to 50 GHz.<>
提出了一种用于毫米波信号采集和延迟的两相InGaAs通道2DEG-CCD(电荷耦合器件)。信号延迟与时钟频率已测量从1兆赫到14千兆赫,验证CCD操作。输入输出传递函数是线性的,在2dbm处有1db压缩点,在35dbm处有三次谐波截距。在4.73 GHz频段测得电荷转移效率(CTE)为0.99。二维瞬态模拟表明,电荷包以饱和速度传输,CTE的退化主要是由于电极间寄生井中的电荷捕获。仿真预测,在时钟频率高达50 GHz的情况下,CTE可以大于0.9999。
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