期刊
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
卷 70, 期 11, 页码 10417-10425出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TAP.2022.3191412
关键词
Conformal transmitarray; E-band; millimeter wave; multi-beam antenna; wideband
资金
- Australia Research Council Discovery Program [DP 220101158]
This article presents wideband conformal transmitarrays at E-band for multibeam applications. A triple-layer element with double split rings is used to achieve wideband transmissions with a 360 degrees continuous phase variation range at 74 GHz. A comprehensive design methodology of multibeam conformal transmitarrays for various platforms is demonstrated and validated through experiments.
Wideband conformal transmitarrays at E-band are developed for multibeam applications in this article. A triple-layer element with double split rings is presented for wideband transmissions, achieving a 360 degrees continuous phase variation range at 74 GHz with less than 2.3 dB transmission loss. A comprehensive design methodology of multibeam conformal transmitarrays is demonstrated for various platforms with different curvatures. To validate the theoretical analysis, conformal transmitarrays with two different curvatures are designed, fabricated, and measured. Multiple radiation beams are realized between +/- 30 degrees and +/- 45 degrees for the two prototypes, respectively. Good agreement is obtained between simulation and measurement. The 3 dB gain bandwidths are 30% from 66.5 to 90 GHz, and 27.8% from 68 to 90 GHz for the two designs, respectively, covering the entire E-band.
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