Abstract
A high-gain wideband low-profile open resonator antenna (ORA) is proposed, which consists of a spherical geometry ground and a single layer partially reflective surface (PRS). A PRS with a suitable positive reflection coefficient phase gradient can correct the problem of multiple quasi-Laguerre-Gaussian beam modes that cannot be excited in a first-order height cavity. Combining these two techniques, we dramatically improve the ORA's 3-dB gain bandwidth at a low profile and reduce the antenna sidelobe level. We designed and fabricated this ORA prototype, and the measured results show a 3-dB gain bandwidth of 40% with a peak gain of 18.8 dBi. Our proposed method shows its effectiveness in improving the gain bandwidth of an ORA with a low profile and multiple resonant modes.
| Original language | English |
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| Title of host publication | 2022 Asia-Pacific Microwave Conference Proceedings |
| Publisher | IEEE |
| Pages | 309-311 |
| ISBN (Electronic) | 978-4-902339-56-7 |
| ISBN (Print) | 978-1-6654-5108-6 |
| DOIs | |
| Publication status | Published - Nov 2022 |
| Event | 2022 Asia-Pacific Microwave Conference (APMC 2022) - Hybrid, Yokohama, Japan Duration: 29 Nov 2022 → 2 Dec 2022 |
Conference
| Conference | 2022 Asia-Pacific Microwave Conference (APMC 2022) |
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| Abbreviated title | APMC2022 |
| Place | Japan |
| City | Yokohama |
| Period | 29/11/22 → 2/12/22 |
Research Keywords
- Fabry-Perot
- open resonator antenna
- wideband
- low-profile
- high-gain
- partially reflective surface