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oe1(光电查) - 科学论文

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  • ELECTRICALLY RECONFIGURABLE RADIATION PATTERNS OF SLOT ANTENNA ARRAY USING AGILE PLASMA WALL

    摘要： In this paper, an antenna with recon?gurable radiation pattern in the H-plane at 2.45 GHz for high power applications is presented. It is based on a 3-slot array in the E-plane covered partially with a wall of plasma in order to reduce the length of the slots and consequently ensure electrically a modi?cation of the radiation pattern in the H-plane. The power distribution of the array is ensured with a power splitter.

    关键词： recon?gurable radiation pattern,high power applications,slot antenna array,plasma wall

    更新于2025-09-23 15:21:01

  • A Waveguide Switch Based on Contactless Gap Waveguide Technology

    摘要： A novel dual-pole dual-throw (DPDT) waveguide switch is proposed for high-power and low-loss applications. The proposed DPDT was designed based on the contactless properties of the gap waveguide technologies in the Ku frequency band. The DPDT was composed of two concentric contactless cylinders. Standard rectangular waveguide ports (WR 75) and waveguide paths are machined in the middle of these cylinders. The rotational movement of the inner cylinder is realized using two bearings in the top and bottom of the DPDT. The proposed structure is fabricated and the measured results are in good agreement with the simulated ones. The measured insertion loss and return loss for the aligned ports are better than 0.1 and 25 dB in the frequency band ranging from 11 to 13.5 GHz, respectively, and the measured isolation between two adjacent ports is better than 60 dB.

    关键词： gap waveguide,Dual-pole dual-throw (DPDT),high-power applications,waveguide switch

    更新于2025-09-12 10:27:22