Abstract
In this letter the advantages offered by ε‐near‐zero materials as substrates for horizontal dipole antennas near a ground plane are theoretically studied. From the previous work it is known that substrates with extremely low values of permittivity dramatically enhance radiation from horizontal currents over a ground plane. On the other hand, as reported in this letter, frequency dispersion and the finite size of the substrate limit the achievable enhancement in antenna performance.
| Original language | English |
|---|---|
| Pages (from-to) | 2674-2677 |
| Number of pages | 4 |
| Journal | Microwave and Optical Technology Letters |
| Volume | 50 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 2008 |
| MoE publication type | A1 Journal article-refereed |
Keywords
- dipole antenna
- conducting surface
- near-zero permittivity
- dispersion
- quality factor