| Citation: | Honggang HAO, Jiang LI, Ting ZHANG, Wei RUAN. Design of Ka-band Linear Tapered Slot Antennas Based on Substrate Integrated Waveguide Feed[J]. Journal of Electronics & Information Technology, 2020, 42(3): 582-588. doi: 10.11999/JEIT190218
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Linear Tapered Slot Antennas (TSA) have significant advantages over traditional horn antennas, dielectric rod antenna when used as feed elements in Focal Plane Arrays (FPA) of Passive MilliMeter Wave(PMMW) imaging. In this paper, a novel Antipodal Linear Tapered Slot Antenna(ALTSA) is designed and optimized. The proposed antenna, the gain of which is improved by loading metamaterial structure, is fed by the Substrate Integrated Waveguide(SIW). Simulation and measure analysis show that the good impedance characteristics, low sidelobe levels, high and smooth gain are all achieved in a wide frequency band. Meanwhile, the designed antenna has a smaller aperture width and is easier to form a denser feed array in the focal plane to improve the spatial resolution of passive millimeter wave imaging.
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