Abstract
Bandwidth and gain enhancement of microstrip patch antennas (MPAs) is proposed using reflective metasirface (RMS) as a superstrate. Two different types of the RMS, namely- the double split-ring resonator (DSR) and double closed-ring resonator (DCR) are separately investigated. The two antenna prototypes were manufactured, measured and compared. The experimental results confirm that the RMS loaded MPAs achieve high-gain as well as bandwidth improvement. The desinged antenna using the RMS as a superstrate has a high-gain of over 9.0 dBi and a wide impedance bandwidth of over 13%. The RMS is also utilized to achieve a thin antenna with a cavity height of 6 mm, which is equivalent to γ/21 at the center frequency of 2.45 GHz. At the same time, the cross polarization level and front-to-back ratio of these antennas are also examined.
Original language | English |
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Pages (from-to) | 2496-2503 |
Number of pages | 8 |
Journal | IEICE Transactions on Communications |
Volume | E93-B |
Issue number | 10 |
Publication status | Published - 2010 |
Keywords
- Fabry, Perot cavity
- cavity resonators
- microstrip antennas
- microstrip devices
- optical resonators