Abstract
In this paper, a metamaterial-based zeroth-order (ZOR) mushroom antenna is presented by using a new composite right/left-handed (CRLH) transmission line unit-cell implemented with a U-shaped top plate is presented to extend bandwidth. The ZOR antenna whose resonance frequency is independent of the antenna size can enable a reduction of the antenna size. Because the shunt capacitance is determined by the area of a mushroom patch, a U-shaped mushroom having a lower shunt capacitance than the Sievenpiper mushroom structure is properly designed to widen the small bandwidth of the CRLH TL antenna. Compared to a square-shaped mushroom structure, a U-shaped mushroom structure for three unit-cells provided a reduced shunt capacitance and increased the 10-dB bandwidth by 2. 5 times at 9. 37 GHz.
| Original language | English |
|---|---|
| Pages (from-to) | 1633-1635 |
| Number of pages | 3 |
| Journal | Journal of the Korean Physical Society |
| Volume | 61 |
| Issue number | 10 |
| DOIs | |
| State | Published - Dec 2012 |
Bibliographical note
Funding Information:This work was supported by the DGIST R&D Program of the Ministry of Education, Science and Technology of Korea (12-RS-02).
Keywords
- Antenna
- Composite right/left-handed
- Left handed
- Metamaterials
- Mushroom