Umair, Hassan and Latef, Tarik Bin Abdul and Yamada, Yoshihide and Hassan, Tayyab and Mahadi, Wan Nor Liza Binti Wan and Othman, Mohamadariff and Kamardin, Kamilia and Hussein, Mousa (2021) Quarter wavelength Fabry-Perot cavity antenna with wideband low monostatic radar cross section and off-broadside peak radiation. Applied Sciences-Basel, 11 (3). ISSN 2076-3417, DOI https://doi.org/10.3390/app11031053.
Full text not available from this repository.Abstract
Since antennas are strong radar targets, their radar cross section (RCS) reduction and radiation enhancement is of utmost necessity, particularly for stealth platforms. This work proposes the design of a Fabry-Perot Cavity (FPC) antenna which has wideband low monostatic RCS. While in the transmission mode, not only is gain enhancement achieved, but radiation beam is also deflected in the elevation plane. Moreover, the design is low-profile, i.e., the cavity height is similar to lambda/4. A patch antenna designed at 6 GHz serves as the excitation source of the cavity constructed between the metallic ground plane and superstrate. The superstrate structure is formed with absorptive frequency selective surface (AFSS) in conjunction with dual-sided partially reflective surface (PRS). Resistor loaded metallic rings serve as the AFSS, while PRS is constructed from inductive gradated mesh structure on one side to realize phase gradient for beam deflection; the other side has fixed capacitive elements. Results show that wideband RCS reduction was achieved from 4-16 GHz, with average RCS reduction of about 8.5 dB over the reference patch antenna. Off-broadside peak radiation at -38 degrees was achieved, with gain approaching similar to 9.4 dB. Simulation and measurement results are presented.
| Item Type: | Article |
|---|---|
| Funders: | Universiti Malaya[GPF015A-2019] |
| Uncontrolled Keywords: | Fabry-Perot Cavity (FPC);Radar cross section;Frequency selective surface;Partially reflecting surface;Off-broadside peak radiation |
| Subjects: | Q Science > QC Physics Q Science > QD Chemistry T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | Faculty of Engineering |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 20 Jul 2022 02:36 |
| Last Modified: | 20 Jul 2022 02:36 |
| URI: | http://eprints.um.edu.my/id/eprint/34051 |
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