A Low Profile Modulated Metasurface Antenna for Multi-Beam Applications
- Publisher:
- IEEE
- Publication Type:
- Conference Proceeding
- Citation:
- 2023 17th European Conference on Antennas and Propagation (EuCAP), 2023, 00
- Issue Date:
- 2023-05-31
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| Filename | Description | Size | |||
|---|---|---|---|---|---|
| A Low Profile Modulated Metasurface Antenna for Multi-Beam Applications.pdf | Accepted version | 1.77 MB |
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Modulated metasurface is considered as a good candidate for low profile multi beam antennas Usually a superposition method of all impedance modulations for different beams is used However a limitation of this method is that a very small number of beams can be generated due to the mutual interference of different impedance modulations which will lead to low gains and high side lobe levels It is found that the source locations for each beam play a key role in interference suppression In this paper instead of using the time consuming full wave simulation based optimization the optimal source locations are obtained by using the aperture fields calculated from the zeroth order approximation of the currents on the surface To verify the design concept a five beam modulated metasurface antenna has been designed fabricated and measured providing an angular coverage up to 30 Good agreement between the simulation and measurement has been obtained
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