Abstract
This paper presents a circularly polarized shared aperture antenna. The proposed antenna is a combined S-band patch antenna array and a K-band transmitarray antenna. The high-frequency transmitarray feed and the low-frequency patch antenna array share the same aperture area. The high-frequency transmitarray surface only uses a single substrate layer and is electrically transparent to the low-frequency antenna part. With an impressive frequency-ratio of 5.55 and a radiating area of only 10x10 cm the antenna achieves an impedance bandwidth of more than 1 GHz and 5 GHz, and a peak realized gain of 15.35 dBi and 22.85 dBi, in the S- and K-band respectively. Additionally, the low-frequency antenna mode shows a good beamforming performance with a 120-degree steering range with only a 1.25 dB gain variation.
| Original language | English |
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| Title of host publication | 2023 17th European Conference on Antennas and Propagation (EuCAP) |
| Publisher | IEEE (Institute of Electrical and Electronics Engineers) |
| Publication date | 2023 |
| Article number | 10133679 |
| ISBN (Print) | 978-1-6654-7541-9 |
| ISBN (Electronic) | 978-883129907-7 |
| DOIs | |
| Publication status | Published - 2023 |
| Event | 2023 17th European Conference on Antennas and Propagation (EuCAP) - Florence, Italy Duration: 26 Mar 2023 → 31 Mar 2023 |
Conference
| Conference | 2023 17th European Conference on Antennas and Propagation (EuCAP) |
|---|---|
| Country/Territory | Italy |
| City | Florence |
| Period | 26/03/2023 → 31/03/2023 |
Keywords
- Antenna
- Beam-steering
- Beamforming
- Circular Polarization
- Dual-band
- K-band
- mm-wave
- Patch Antenna Array
- S-band
- Shared Aperture
- Transmitarray