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Microstrip patch back radiation reduction using metamaterial superstrate
- Source :
- IET Microwaves, Antennas & Propagation. 14:158-164
- Publication Year :
- 2019
- Publisher :
- Institution of Engineering and Technology (IET), 2019.
-
Abstract
- The capability of the capacitively loaded loop (CLL) metamaterial (MTM) superstrate to attenuate surface waves thereby reducing the back radiation of microstrip patch antennas is examined. To understand the surface wave suppression mechanism, theoretical approaches of a grounded dielectric slab waveguide is provided. Both theoretical and numerical analyses show that the proposed superstrate causes a drastic attenuation of surface wave propagation. To confirm the numerical simulations, the proposed antenna is fabricated and tested. The dimensions of the CLL-MTM covered patch antenna are 0.6λ × 0.8λ × 0.14λ. The radiated gain and efficiency are measured at 7.8 dB and 95%, respectively. Measurements show that the front-to-back ratio is enhanced by more than 12 dB. In comparison with the patch antenna without the CLL-MTM superstrate, the proposed antenna reduces the gain and efficiency by less than 0.1 dB and 2%, respectively.
- Subjects :
- Patch antenna
Waveguide (electromagnetism)
Materials science
business.industry
020208 electrical & electronic engineering
Metamaterial
020206 networking & telecommunications
02 engineering and technology
Microstrip
Microstrip antenna
Optics
Front-to-back ratio
Surface wave
0202 electrical engineering, electronic engineering, information engineering
Electrical and Electronic Engineering
Antenna (radio)
business
Subjects
Details
- ISSN :
- 17518733
- Volume :
- 14
- Database :
- OpenAIRE
- Journal :
- IET Microwaves, Antennas & Propagation
- Accession number :
- edsair.doi...........b873ec123b9db2c60d9b432fb9fe7895