Journal
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
Volume 59, Issue 8, Pages 2758-2765Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TAP.2011.2158786
Keywords
Dual band; microstrip patch antenna; split ring resonator
Funding
- Spanish Government [TEC2006-13248-C04-04]
- National Science Council of Taiwan (NSC) [99-2218-E-009-009]
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A study of an innovative antenna based on split ring resonators (SSRs) is presented. SSRs have been exhaustively used in the literature as the unit cell of periodic structures for obtaining left-handed media, whose interesting characteristics can be applied to waveguides or antennas. In this work, the authors propose the use of only one unit cell of a double SRR as a radiator. The double SRR is printed on a grounded dielectric slab, acting as the radiating element of a microstrip patch antenna, and grounded pins are used to short-circuit the structure for size reduction. A compact dual band antenna is obtained in this way. For example, a particular design making use of PP (epsilon(r) = 2.2) as substrate allows a size of 0.05 lambda(o) x 0.05 lambda(o) for the lower frequency of operation with an acceptable radiation efficiency. Simulated and measured results of return losses, gain and radiation efficiency of this new type of patch antenna are provided.
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