Premium
Radar cross section reduction and gain enhancement of slot antenna using polarization conversion metasurface for X‐band applications
Author(s) -
Chatterjee Joysmita,
Mohan Akhilesh,
Dixit Vivek
Publication year - 2021
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.22792
Subject(s) - radar cross section , optics , radiator (engine cooling) , slot antenna , polarization (electrochemistry) , antenna (radio) , materials science , antenna gain , physics , antenna aperture , antenna measurement , radiation pattern , engineering , electrical engineering , scattering , chemistry
A compact metasurface loaded slot antenna with wide impedance and radar cross section (RCS) bandwidths and a high gain is reported in this communication. The proposed polarization conversion metasurface (PCMS) and its mirror image is arranged into four quadrants and placed atop the slot antenna. A 10‐dB monostatic RCS reduction from 7.85 to 12.25 GHz is achieved due to the 180° phase difference of the reflected waves from the PCMS and its mirror image. The gain of the proposed structure gets enhanced by almost 3 dB compared to the radiator alone, throughout the operating band, by partially removing the PCMS just above the slot radiator. The antenna is suitable for use in stealth applications in X‐band communication. The antenna structure is fabricated and measured and a good agreement is observed between the simulated and measured results.