Abstract
We present an efficient method to analyze a periodic pin-patch structure, consisting of two artificial dielectric layers (ADLs) connected by vertical metal pins. ADLs are made of square metal patches in a periodic lattice and have recently been used as superstrates in antennas and arrays to enhance the bandwidth and scanning range. ADLs form an anisotropic effective medium, thus enabling a large scanning volume without supporting surface waves. However, the anisotropy increases the cross-polarization (X-pol) of the antenna in the diagonal plane. This problem can be reduced by introducing vertical metal pins in the ADL superstrate to form the pin-patch structure. The analysis method is based on a spectral method of moments (MoMs) and uses entire-domain basis functions in a hybrid Cartesian and cylindrical representation to accurately model the currents on the structure and scattering parameters under general plane-wave incidence.
| Original language | English |
|---|---|
| Pages (from-to) | 3322-3327 |
| Number of pages | 6 |
| Journal | IEEE Transactions on Antennas and Propagation |
| Volume | 73 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 2025 |
Bibliographical note
Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-careOtherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.
Keywords
- Artificial dielectrics
- cross-polarization
- entire-domain basis functions
- method of moments
- periodic structures
- spectral domain