Open AccessA 3D printed metallized Fabry–Perot cavity antenna with improved bandwidth and low side‐lobe levels
Author(s) -
Xu Ke,
Zhou Lin,
Zhang Bing,
Chen Xing
Publication year - 2021
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/ell2.12147
Subject(s) - side lobe , fabry–pérot interferometer , choke , materials science , bandwidth (computing) , optics , optoelectronics , 3d printed , antenna (radio) , electrical engineering , telecommunications , physics , engineering , biomedical engineering , wavelength
A 3D printed metallized Fabry–Perot cavity antenna centred at 5.8 GHz is presented in this letter. A non‐uniform grid superstrate and a choke groove are employed in the Fabry–Perot cavity antenna to improve the input bandwidth and decrease the side lobes. By using the non‐uniform superstrate, the |S 11 | ← 10 dB bandwidth is enhanced to approximately 6.4% (from 5.65 to 6.02 GHz). The side lobes decrease to −14.03 and −21.62 dB on E and H planes by the choke groove. The designed antenna is fabricated by using a stereolithography‐based 3D printing technique for verification, whose weight is only 13% of the one fabricated with copper. The measured result agrees well with the simulated one.