Pixelated metasurface based wideband cross polarization converter

ABSTRACT

A wideband cross polarization converter with the pixelation approach for X, Ku, and K bands has been presented in this paper. The polarizer consists of copper FR4 combo patched pixels on an FR4 substrate backed by copper. The pixels arrangement on the meta-atom yielded polarization conversion ratio (PCR) >0.9 over a wide frequency range from 10.15 to 27.6 GHz. A broadband FWHM bandwidth of 19.87 GHz is observed for PCR which ranges from 9.26 to 29.13 GHz. The physical mechanism of the linear polarization conversion is analyzed by the spatial profile of the electric and magnetic fields. Further, to validate the simulation results a prototype of the metasurface constating of $17\times 17$ meta-atom has been fabricated. A good agreement between the experimental and simulation results has been observed. The designed metasurface when integrated with antennas can be extensively applied for diverse microwave applications for polarization manipulation devices.

KEYWORDS:

• Metasurface
• pixelated meta-atom
• polarization conversion
• cross-polarization

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Notes on contributors

Rajan Agrahari

Rajan Agrahari received B.Tech. degree in Electronics and Communication Engineering from Uttar Pradesh Technical University in 2012 and Ph.D. degree from the Indian Institute of Technology (BHU), Varanasi, India in 2019. At present he is an assistant professor at the National Institute of Technology Patna, Bihar, India. His current areas of research include nanophotonics, plasmonics, and metamaterials.

Pankaj Kumar

Pankaj Kumar received the B.Tech. degree in electronics and communication engineering from Ujjain Engineering College, Ujjain, India in 2011 and the M.Tech degree from PDPM Indian Institute of Information Technology Design and Manufacturing, Jabalpur, India in 2014. He had completed his Ph.D. from National Institute of Technology Patna, Bihar, India. At present he is working as an Assistant Professor at Department of Computer Science and Engineering, Graphic Era Hill University, Dehradun, India. He is interested in metasurfaces for terahertz applications.

Vikram Kumar

Vikram Kumar received the BSc. Engineering degree in Electronics and Communication from Magadh University, Bodh Gaya, India, in 2008, and M.E. degree from Birla Institute of Technology Mesra, Ranchi, India, in 2011. He had completed his Ph.D. from Indian Institute of Technology (BHU), Varanasi, India in 2019. At present he is working as an Assistant Professor at Department of Electronic Science, Delhi University South Campus, India. His research interests include Metamaterials, Tera-Hertz antennas, Microwave mode converter and biological antennas.