A Dual-Port Leaky-Wave Array Antenna Integrated Beam-Steerable Schottky Heterodyne Receiver for Terahertz-Band Applications

IF 3.9 2区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Terahertz Science and Technology Pub Date : 2025-03-26 DOI:10.1109/TTHZ.2025.3573859

Huanxin Li;Xiang Gao;Ziru Chen;Dan Qiao;Xiangyuan Bu;Jianping An

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Abstract

This article presents a dual-port leaky-wave array antenna integrated beam-steerable Schottky heterodyne receiver that may be attractive for terahertz (THz) sensing applications. The receiver chip features a low-cost wideband quasi-optical design that utilizes one frequency-scanning leaky-wave array and one fixed-beam monopole integrated lens antenna for efficiently coupling the radio-frequency (RF) and local-oscillator (LO) signals, respectively. Operating in the subharmonic mixing mode, a dual-channel beam-steerable Schottky heterodyne receiver circuit was designed for performance maximization via both passive and active modeling. A prototype of the THz beam-steerable receiver module was manufactured and experimentally demonstrated. By flexibly switching between seven fixed LO frequencies among 99.5–114.5 GHz, the receiver can reconfigurably detect the RF signal at one of seven equally-divided sub-bands from 200 to 235 GHz, with an intermediate-frequency bandwidth up to 5 GHz. In particular, the receiver can detect the RF beam from unfixed incident direction over a wide steering coverage range of 80°. The measured average single-sideband conversion gain and noise figure are around −9.1 and 9.4 dB, respectively. The results have validated good receiver performance and its potential for sensing applications.

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一种用于太赫兹波段的双端口漏波阵列天线集成波束可控肖特基外差接收机

本文提出了一种双端口漏波阵列天线集成波束可控肖特基外差接收机，它可能对太赫兹（THz）传感应用具有吸引力。该接收器芯片采用低成本宽带准光学设计，利用一个频率扫描漏波阵列和一个固定波束单极集成透镜天线，分别有效地耦合射频（RF）和本振（LO）信号。设计了一种工作在次谐波混合模式下的双通道波束可控肖特基外差接收电路，通过无源和有源建模实现了性能最大化。制作了太赫兹波束可控接收模块的原型，并进行了实验验证。通过在99.5 ~ 114.5 GHz的7个固定LO频率之间灵活切换，接收机可以在200 ~ 235 GHz的7个等分子频段中任意一个进行可重构的射频信号检测，中频带宽高达5 GHz。特别是，接收器可以在80°的宽转向覆盖范围内检测来自非固定入射方向的射频波束。测量的平均单边带转换增益和噪声系数分别约为- 9.1和9.4 dB。结果验证了良好的接收机性能及其在传感应用中的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

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.