期刊
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
卷 21, 期 2, 页码 381-385出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LAWP.2021.3132172
关键词
Gain; Apertures; Lenses; Bandwidth; Antenna measurements; Three-dimensional displays; Gain measurement; Dual polarization; metal transmitarray (TA); two-dimensional (2-D) beam scanning; quadruple-ridged waveguide (QRW); wide gain bandwidth
资金
- Chengdu Science and Technology Program [2019-YF08-00173-GX]
A high-gain dual-polarized all-metallic transmitarray (TA) antenna with wide gain bandwidth is proposed using quadruple-ridged waveguide (QRW). The QRW has a symmetrical structure and allows for dual-polarization and 2-D beam scanning. The fabricated TA antenna achieves high gain, aperture efficiency, and broadside gain bandwidth at 30 GHz, with a 2-D beam scanning range of +/- 18 degrees.
By utilizing the quadruple-ridged waveguide (QRW), a high-gain dual-polarized all-metallic transmitarray (TA) antenna with wide gain bandwidth is proposed. The QRW has a fixed height with four identical ridges symmetrically located inside a square waveguide. The phase compensation is obtained by simultaneously controlling the length of the four ridges. The fully symmetrical structure of the QRW enables the proposed TA to achieve dual-polarization and two-dimensional (2-D) beam scanning. The proposed TA antenna with an aperture of 112 x 112 mm is designed and fabricated by utilizing 3-D metallic printed technology. The measured broadside gain at 30 GHz for the two orthogonal polarizations is 28.2 dBi and 28.1 dBi, corresponding to an aperture efficiency of 41.9% and 40.9%, respectively. The measured 1 and 3 dB broadside gain bandwidth is 27.3% and 34.8%, respectively. The 2-D beam scanning range at 30 GHz for the dual polarized radiation covers +/- 18 degrees, with a maximum scan loss of 2.3 and 3.2 dB, respectively.
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