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2020-10-02

A Novel Millimeter-Wave Backward to Forward Scanning Periodic Leaky-Wave Antenna Based on Two Different Radiator Types

By Yiming Zhang, Hui Liu, Chenyang Meng, Yuxin Lin, Yuan Zhang, Erik Forsberg, and Sailing He
Progress In Electromagnetics Research, Vol. 168, 31-38, 2020
doi:10.2528/PIER20072202

Abstract

A periodic millimeter wave leaky-wave antenna (LWA), which has two different types of radiator elements that enable backward to forward radiation, is proposed. The unit-cell of the LWA consists of two quarter-wavelength microstrip lines and two corrugated substrate integrated waveguide (CSIW) cells with S-shaped quarter-wavelength open-circuit stubs. In addition to two parallel edge radiators, a single etched transverse slot with a tilt angle acts as an ancillary radiator, which ensures impedance matching in a large frequency range and achieves the backward to forward scanning. We analyze the proposed design through simulations, characterize a fabricated prototype and find it to have good radiation properties including broad impedance bandwidth. The measurement results show a high peak gain from 11 to 15.8 dBi with a large scanning angle range from -34° to +22° in the K-band operating frequency range.

Citation


Yiming Zhang, Hui Liu, Chenyang Meng, Yuxin Lin, Yuan Zhang, Erik Forsberg, and Sailing He, "A Novel Millimeter-Wave Backward to Forward Scanning Periodic Leaky-Wave Antenna Based on Two Different Radiator Types," Progress In Electromagnetics Research, Vol. 168, 31-38, 2020.
doi:10.2528/PIER20072202
http://jpier.org/PIER/pier.php?paper=20072202

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