Dual-Band Shared-Aperture Single-Layer Partially Reflective Surface Antenna With Flexible Frequency Ratio
(2025) In IEEE Open Journal of Antennas and Propagation 6(4). p.1049-1060- Abstract
Dual-band shared-aperture Fabry-Pérot cavity (DS-FPC) antennas with single-layer partially reflective surface (PRS) are inherently limited in the achievable frequency ratio. This paper analyzes such antennas to derive the feasible range of frequency ratio and thereafter proposes a dual-band shared-aperture antenna that can fill the frequency ratio gap. The novel design integrates a short backfire antenna for the low band (LB) and a Fabry-Pérot cavity (FPC) antenna for the high band (HB), utilizing a shared single-layer PRS and a parasitic element. To demonstrate the effectiveness of the solution, a prototype was designed and fabricated for the frequency ratio of 1.64, representing the extreme limit of the infeasible frequency ratio gap... (More)
Dual-band shared-aperture Fabry-Pérot cavity (DS-FPC) antennas with single-layer partially reflective surface (PRS) are inherently limited in the achievable frequency ratio. This paper analyzes such antennas to derive the feasible range of frequency ratio and thereafter proposes a dual-band shared-aperture antenna that can fill the frequency ratio gap. The novel design integrates a short backfire antenna for the low band (LB) and a Fabry-Pérot cavity (FPC) antenna for the high band (HB), utilizing a shared single-layer PRS and a parasitic element. To demonstrate the effectiveness of the solution, a prototype was designed and fabricated for the frequency ratio of 1.64, representing the extreme limit of the infeasible frequency ratio gap for conventional DS-FPC antennas with single-layer PRS. The overall height of the antenna is 0.36 and 0.59 wavelength in LB and HB, respectively. The prototype achieves 7.3% and 6.7% of measured overlapping 10dB impedance bandwidth and 3dB realized gain bandwidth, significantly outperforming other designs with single-layer PRS. Moreover, it generally offers simpler structure, lower profile, as well as more balanced overlapping bandwidths when compared to other designs with multi-layer PRS.
(Less)
- author
- Lau, Buon Kiong LU
- organization
- publishing date
- 2025
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Dual-band, Fabry-Pérot cavity (FPC) antenna, partially reflective surface (PRS), shared-aperture, short backfire antenna (SBA)
- in
- IEEE Open Journal of Antennas and Propagation
- volume
- 6
- issue
- 4
- pages
- 12 pages
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- external identifiers
-
- scopus:105002808573
- ISSN
- 2637-6431
- DOI
- 10.1109/OJAP.2025.3560577
- language
- English
- LU publication?
- yes
- id
- 70dc1ed9-3fcb-4cd2-a1a8-3de77f7ab4ec
- date added to LUP
- 2025-08-29 12:14:08
- date last changed
- 2025-10-14 12:36:46
@article{70dc1ed9-3fcb-4cd2-a1a8-3de77f7ab4ec,
abstract = {{<p>Dual-band shared-aperture Fabry-Pérot cavity (DS-FPC) antennas with single-layer partially reflective surface (PRS) are inherently limited in the achievable frequency ratio. This paper analyzes such antennas to derive the feasible range of frequency ratio and thereafter proposes a dual-band shared-aperture antenna that can fill the frequency ratio gap. The novel design integrates a short backfire antenna for the low band (LB) and a Fabry-Pérot cavity (FPC) antenna for the high band (HB), utilizing a shared single-layer PRS and a parasitic element. To demonstrate the effectiveness of the solution, a prototype was designed and fabricated for the frequency ratio of 1.64, representing the extreme limit of the infeasible frequency ratio gap for conventional DS-FPC antennas with single-layer PRS. The overall height of the antenna is 0.36 and 0.59 wavelength in LB and HB, respectively. The prototype achieves 7.3% and 6.7% of measured overlapping 10dB impedance bandwidth and 3dB realized gain bandwidth, significantly outperforming other designs with single-layer PRS. Moreover, it generally offers simpler structure, lower profile, as well as more balanced overlapping bandwidths when compared to other designs with multi-layer PRS.</p>}},
author = {{Lau, Buon Kiong}},
issn = {{2637-6431}},
keywords = {{Dual-band; Fabry-Pérot cavity (FPC) antenna; partially reflective surface (PRS); shared-aperture; short backfire antenna (SBA)}},
language = {{eng}},
number = {{4}},
pages = {{1049--1060}},
publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
series = {{IEEE Open Journal of Antennas and Propagation}},
title = {{Dual-Band Shared-Aperture Single-Layer Partially Reflective Surface Antenna With Flexible Frequency Ratio}},
url = {{http://dx.doi.org/10.1109/OJAP.2025.3560577}},
doi = {{10.1109/OJAP.2025.3560577}},
volume = {{6}},
year = {{2025}},
}