volume | PIER Journals

Abstract

Arbitrarily shaped near field with arbitrary polarization is practical application requirements. Our previous work proposed combining the phase conjugation (PC) and planar tensor impedance modulated holographic metasurface (TIMHMS) for arbitrarily shaped near field with arbitrary polarization. This paper proposes to generate arbitrarily shaped near field with arbitrary polarization by cylindrical conformal TIMHMS based on PC and Blackman window function. For the first time to the knowledge of the authors, arbitrarily shaped near field with arbitrary polarization is generated by conformal TIMHMSs. As example, two cylindrical conformal TIMHMSs are constructed at 30GHz for rectangle-shaped near field: (LHCP, z = 100 mm) and (LP, z = 200 mm), where LHCP and LP are left hand circular and linear polarizations, respectively. Blackman window function is used to optimize the cylindrical conformal TIMHMS design for optimized field pattern efficiency and low sidelobe. The calculated, simulated, and measured results agree well, and validate the proposed design method for conformal TIMHMS. The designed conformal TIMHMSs have the advantages of high pattern efficiency 42.1%, flexibly shaped field patterns and polarizations, and low sidelobe (-15 dB). The design method does not need complicated calculations and can be used in the upcoming sixth-generation wireless networks with required shaped nearfield for Radio Frequency Identification, holographic imaging, biomedical applications, etc.

1. Williams, D. Elliott, Charles Dorn, Sergio Pellegrino, and Ali Hajimiri, "Origami-inspired shape-changing phased array," 2020 50th European Microwave Conference (EuMC), 344-347, Utrecht, Netherlands, 2021.

2. Liang, Hong-Yan, Hong-Chun Yang, and Jing Zhang, "A cylindrical conformal directional monopole antenna for borehole radar application," IEEE Antennas and Wireless Propagation Letters, Vol. 11, 1525-1528, 2012. Google Scholar

3. Casaletti, Massimiliano, Maciej Śmierzchalski, Mauro Ettorre, Ronan Sauleau, and Nicolas Capet, "Polarized beams using scalar metasurfaces," IEEE Transactions on Antennas and Propagation, Vol. 64, No. 8, 3391-3400, 2016. Google Scholar

4. Shen, Yizhu, Song Xue, Jiawei Yang, and Sanming Hu, "Tensor holographic metasurface using addition theory to independently manipulate orthogonally polarized bessel beams," Advanced Materials Technologies, Vol. 6, No. 4, 2001047, 2021. Google Scholar

5. Catapano, Ilaria, Lorenzo Crocco, and Tommaso Isernia, "A simple two-dimensional inversion technique for imaging homogeneous targets in stratified media," Radio Science, Vol. 39, No. 1, 1-14, 2004. Google Scholar

6. Liu, Ruizhi and Ke Wu, "Antenna array for amplitude and phase specified near-field multifocus," IEEE Transactions on Antennas and Propagation, Vol. 67, No. 5, 3140-3150, 2019. Google Scholar

7. Zhao, Deshuang and Min Zhu, "Generating microwave spatial fields with arbitrary patterns," IEEE Antennas and Wireless Propagation Letters, Vol. 15, 1739-1742, 2016. Google Scholar

8. Geyi, Wen, "The method of maximum power transmission efficiency for the design of antenna arrays," IEEE Open Journal of Antennas and Propagation, Vol. 2, 412-430, 2021. Google Scholar

9. Dong, Yan, Xiao Cai, and Wen Geyi, "A pattern shaping method for focused antenna arrays," IEEE Antennas and Wireless Propagation Letters, Vol. 23, No. 4, 1236-1240, 2024. Google Scholar

10. De Rosny, Julien, Geoffroy Lerosey, and Mathias Fink, "Theory of electromagnetic time-reversal mirrors," IEEE Transactions on Antennas and Propagation, Vol. 58, No. 10, 3139-3149, 2010. Google Scholar

11. Huang, Hui-Fen, Zi-Yi Xiang, and Jun-Fa Mao, "Generating arbitrary shaped near-field with arbitrary polarization by combining tensor holographic impedance metasurface and phase conjugation techniques," IEEE Antennas and Wireless Propagation Letters, Vol. 23, No. 7, 1971-1975, 2024. Google Scholar

12. Fong, Bryan H., Joseph S. Colburn, John J. Ottusch, John L. Visher, and Daniel F. Sievenpiper, "Scalar and tensor holographic artificial impedance surfaces," IEEE Transactions on Antennas and Propagation, Vol. 58, No. 10, 3212-3221, 2010. Google Scholar

13. Kong, Xudong, Yucen Tian, Qiang Feng, and Long Li, "High-efficiency cylindrical conformal holographic metasurface based on tensor impedance modulation surface," 2022 IEEE MTT-S International Wireless Symposium (IWS), Vol. 1, 1-3, Harbin, China, 2022.

14. Liang, Yaoyao, Hongzhan Liu, Faqiang Wang, Hongyun Meng, Jianping Guo, Jinfeng Li, and Zhongchao Wei, "High-efficiency, near-diffraction limited, dielectric metasurface lenses based on crystalline titanium dioxide at visible wavelengths," Nanomaterials, Vol. 8, No. 5, 288, 2018. Google Scholar

15. Wu, Jun Wei, Rui Yuan Wu, Xi Chao Bo, Lei Bao, Xiao Jian Fu, and Tie Jun Cui, "Synthesis algorithm for near-field power pattern control and its experimental verification via metasurfaces," IEEE Transactions on Antennas and Propagation, Vol. 67, No. 2, 1073-1083, 2019. Google Scholar

16. Wang, Heng, Shixing Yu, and Na Kou, "Design of cylindrical holographic impedance metasurface for near-field focusing," Progress In Electromagnetics Research Letters, Vol. 106, 129-134, 2022. Google Scholar

17. Li, Yingjun, Shixing Yu, Na Kou, Zhao Ding, and Zhengping Zhang, "Cylindrical conformal array antenna for near field focusing," International Journal of RF and Microwave Computer-Aided Engineering, Vol. 32, No. 6, e23135, 2022. Google Scholar

Prof. Hui-Fen Huang

Dr. Zi-Yi Xiang