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    Wavelength-tunable coupled antenna uncooled infrared (IR) sensor
    3.
    发明授权
    Wavelength-tunable coupled antenna uncooled infrared (IR) sensor 有权
    波长可调耦合天线非制冷红外（IR）传感器

    公开(公告)号：US06310346B1

    公开(公告)日：2001-10-30

    申请号：US09340850

    申请日：1999-06-28

    申请人： Glenn D. Boreman ,  Iulian Cordreanu ,  Christophe Fumeaux ,  Michael Gritz ,  Christos Christodoulou

    发明人： Glenn D. Boreman ,  Iulian Cordreanu ,  Christophe Fumeaux ,  Michael Gritz ,  Christos Christodoulou

    IPC分类号： G01J520

    CPC分类号： G01J5/08 ,  G01J5/0837 ,  G01J5/20 ,  G01J5/34

    摘要： A tuned antenna-coupled infrared detector is made possible by application of a bias voltage in the range of a few hundred millivolts. The use of first and second antenna arms connected to the detector makes possible polarization tuning which eliminates the need for bulk-optical polarization filters. An alternative tuned detector is one in which the antenna is frequency tuned by a capacitative device to make the detector particularly responsive to 8 um to 12 um infrared radiation. When integrated into focal plane arrays, these detectors can be used in remote-sensing systems to facilitate enhanced image recognition, feature extraction and image-clutter removal. One preferred version of the polarization tuned antenna has longitudinal metal antenna arms extending outward from an infrared(IR) sensor in a spiral pattern, with polarization tuning devices connected between the antenna arms, and a voltage for controlling the polarization tuning devices, wherein the polarization tuning devices enable real-time control of current distribution in the arms. For the frequency tuned sensors, the embodiment is preferably a microstrip antenna coupled to a bolometer wherein the sensor has a tunable response accomplished by use of a single substrate voltage on a separate capacitative device. The infrared(IR) sensors can be tunnel diodes, schottky diodes, photovoltaics, photoconductors, bolometers and pyroelectrics. Application areas can include earth-resource mapping, pollution monitoring, and general surveillance.

    摘要翻译： 通过施加几百毫伏范围内的偏置电压，可以实现调谐天线耦合的红外检测器。 连接到检测器的第一和第二天线臂的使用使得可以进行极化调谐，这消除了对于体光偏振滤波器的需要。 一种替代的调谐检测器是其中天线由电容装置进行频率调谐的检测器，以使得检测器特别响应于8到12um的红外辐射。 当集成到焦平面阵列中时，这些检测器可用于遥感系统，以便于增强图像识别，特征提取和图像杂波去除。 偏振调谐天线的一个优选版本具有从螺旋图案的红外（IR）传感器向外延伸的纵向金属天线臂，其中连接在天线臂之间的偏振调谐装置和用于控制极化调谐装置的电压，其中极化 调谐装置使得能够实时地控制臂中的电流分布。 对于频率调谐的传感器，实施例优选地是耦合到测辐射热计的微带天线，其中传感器具有通过在单独的电容装置上使用单个衬底电压来实现的可调谐响应。 红外（IR）传感器可以是隧道二极管，肖特基二极管，光伏，光电导体，测辐射热计和热释电。 应用领域可以包括地球资源测绘，污染监测和一般监测。