Abstract
In this letter, a simple bandwidth-enhanced zeroth- order resonant (ZOR) antenna is proposed. The presented antenna is composed of two unit cells of the composite right/left-handed (CRLH) artificial structure and operates in the series resonant mode. In order to enhance the operational bandwidth, in particular, the interdigital capacitor in a unit cell was properly designed so as to reduce the quality factor of the resonator while occupying a relatively small area. Additionally, to facilitate implementation of the short-circuited boundary condition, the coplanar waveguide (CPW) was applied to develop a via-less uniplanar antenna prototype. Experimental results show that the presented ZOR antenna achieves a 10-dB bandwidth of 15.1% and a peak radiation gain of 1.62 dBi with a compact size of 0.14λ0 × 0.22λ0 at the operating frequency. Measured and simulated results are in good agreement.
Original language | English |
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Article number | 6924727 |
Pages (from-to) | 285-288 |
Number of pages | 4 |
Journal | IEEE Antennas and Wireless Propagation Letters |
Volume | 14 |
DOIs | |
State | Published - 1 Jan 2015 |
Keywords
- Bandwidth-enhanced
- compact
- composite right/left-handed (CRLH)
- coplanar waveguide
- zeroth-order resonant (ZOR) antenna