An ultra-wideband three-way power divider based on spoof surface plasmon polaritons
| Autor: | Ehsan Farokhipour, Nader Komjani, Mohammad Amin Chaychizadeh |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
business.industry Surface plasmon General Physics and Astronomy 020206 networking & telecommunications 02 engineering and technology 021001 nanoscience & nanotechnology Surface plasmon polariton Electric power transmission Transmission line Extremely high frequency 0202 electrical engineering electronic engineering information engineering Optoelectronics Power dividers and directional couplers Transmission coefficient Antenna (radio) 0210 nano-technology business |
| Zdroj: | Journal of Applied Physics. 124:235310 |
| ISSN: | 1089-7550 0021-8979 |
| Popis: | In this paper, an ultra-wideband spoof surface plasmon polaritons’ (SSPPs) power divider with simplest odds ratio (1:3) composed of hexagonal ring unit cells is proposed. The creation of electromagnetic waves with high confinement in a collision between periodically decorated metal and dielectric is a fundamental property of SSPPs. Flexibility, low loss, decreasing cross coupling, and ability for integration are other advantages of SSPP transmission lines. In order to realize the proposed 3-way power divider, first, a novel low loss and compact subwavelength hexagonal unit cell is presented. Next, a plasmonic waveguide is designed. To decrease the dielectric losses, the effect of different substrates on transmission coefficient is investigated too. In the best condition, we have a transmission line with an excellent operation in the frequency range of 3 to 11.8 GHz with a fractional bandwidth (FBW) of 119%. Then, an equal and in-phase 3-way power divider with good isolation between three output ports is designed in a wide frequency range of 2.5–8 GHz with an FBW of 105%. Finally, the proposed 3-way power divider is fabricated and tested in the laboratory. A good agreement between simulations and measurement results proves the functionality of design properly. The ultra wide-bandwidth, low loss, flexibility, and stable performance of this power divider prove its high capability compared with the state-of-the-art references. The proposed power divider can be utilized in developing an integrated plasmonic feeding network of antenna arrays in microwave and millimeter wave frequency bands. |
| Databáze: | OpenAIRE |
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