Unamplified direct detection sensor for passive millimeter wave imaging
Unamplified direct detection sensor for passive millimeter wave imaging
复制标题
用于无源毫米波成像的未放大直接检测传感器
DOI：
10.1117/12.667045
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
D. Chow
中科院分区：
文献类型：
--
作者：
J. Lynch;H. Moyer;J. Schulman;P. Lawyer;R. Bowen;J. Schaffner;D. Choudhury;J. Foschaar;D. Chow
我们已经展示了一种用于被动毫米波成像的零偏压Sb基后向隧道二极管的高效率封装。探测器MMIC的倒装芯片安装在石英基板上，允许将探测器直接放置在用于对角喇叭天线的WR-10波导馈电中。这种布置最大限度地减少了探测器和天线之间的损耗，同时在大多数W波段上提供了阻抗匹配。利用相干测量技术制作、组装和测量了2x2辐射计阵列。假设30赫兹的帧速率为10度K，则计算得到的噪声当量温差。
We have demonstrated a high efficiency package for zero bias Sb-based backward tunnel diodes developed for passive millimeter wave imaging. Flip-chip mounting of detector MMICs onto quartz substrates permit placement of the detector directly within the WR-10 waveguide feeds for diagonal horn antennas. This arrangement minimizes the losses between the detectors and antennas while providing an impedance match over a majority of W band. A 2x2 array of radiometers was fabricated, assembled, and measured using coherent measurement techniques. The resulting noise equivalent temperature difference, calculated assuming a 30 Hz frame rate is 10 degrees K.