用于彗星外差测绘的双频亚毫米波漏波透镜天线

IF 3.9 2区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC
Sjoerd Bosma;Sven L. van Berkel;Maria Alonso-delPino;Darwin Blanco;Cecile Jung-Kubiak;Robert Lin;Goutam Chattopadhyay;Jose V. Siles;Nuria Llombart
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引用次数: 0

摘要

NASA/JPL正在开发下一代天基亚毫米波远程彗星测绘仪器,该仪器具有210-240 GHz和500-580 GHz两个接收器频段。该仪器需要一组接收器来减少关键彗星挥发物的速度分辨图的图像采集时间。此外,需要一个共享的焦平面来节省功率、质量和空间,同时在两个波段保持重叠和等波束宽度的目标照明。在这里,我们描述了用于抛物面反射器下的4x4焦平面阵列(FPA)的双频亚毫米波漏波透镜天线原型的分析、合成、制造和测量,以实现这些目标。FPA元件是波导馈电漏波透镜天线,具有新颖的分层结构,包括集成的频率选择表面,可同时实现约225 GHz和540 GHz的15%工作带宽。详细研究了该分层中的传播漏波模式,并在可制造部件中合成了该分层。采用高精度硅微加工技术制作了亚毫米波透镜天线样机。该样机的测量结果表明,在两个频段上的性能与仿真结果非常接近。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Dual-Band Submillimeter-Wave Leaky-Wave Lens Antenna for Heterodyne Cometary Mapping
The next generation of space-based submillimeter-wave remote cometary mapping instruments is being developed at NASA/JPL with two receiver bands at 210–240 and 500–580 GHz. This instrument requires an array of receivers to decrease image acquisition time of velocity-resolved maps of key cometary volatiles. Furthermore, a single shared focal plane is required to save power, mass, and space while maintaining overlapping and equal-beamwidth target illumination at both bands. Here, we describe the analysis, synthesis, fabrication, and measurement of a prototype dual-band, submillimeter-wave leaky-wave lens antenna intended for a 4× 4 focal-plane array (FPA) under a parabolic reflector that achieves these goals. The FPA elements are waveguide-fed leaky-wave lens antennas with a novel stratification including an integrated frequency-selective surface that enables 15% operational bandwidths around 225 and 540 GHz simultaneously. The propagating leaky-wave modes in this stratification are studied in detail and the stratification is then synthesized in manufacturable components. A submillimeter-wave lens antenna prototype was fabricated using high-precision silicon microfabrication techniques. Measurements of this prototype demonstrate a performance closely matching simulated results in both frequency bands.
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来源期刊
IEEE Transactions on Terahertz Science and Technology
IEEE Transactions on Terahertz Science and Technology ENGINEERING, ELECTRICAL & ELECTRONIC-OPTICS
CiteScore
7.10
自引率
9.40%
发文量
102
期刊介绍: IEEE Transactions on Terahertz Science and Technology focuses on original research on Terahertz theory, techniques, and applications as they relate to components, devices, circuits, and systems involving the generation, transmission, and detection of Terahertz waves.
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