Abstract
This article reported patch antenna functioning at Wi- Fi and 5G bands. Wi-Fi band (2.4 GHz) is obtained by loading Epsilon Negative Transmission Line (ENGTL) metamaterials into the patch radiating at 5G band (3.5 GHz). To acquire Circular Polarization (CP) at 5G band, conventional square patch is embedded with poly fractals. The experimental and simulated data are in close proximity. The obtained impedance bandwidth is 4.01% at Wi-Fi and is 10.68% at 5G band. CP bandwidth is 2.43% at 5G. This mix of ENGTL as well as fractals provides good compactness appropriate for portable gadgets
Highlights
The present day hand held devices are required to operate with various standards forcing them to operate at different frequency bands
Wi-Fi band (2.4 GHz) is obtained by loading Epsilon Negative Transmission Line (ENGTL) metamaterials into the patch radiating at 5G band (3.5 GHz)
By the adoption of metamaterials, the designer can design a dual band patch antenna by selecting the dimensions for high frequency band with less size first and the lower frequency band is obtained by disturbing the current with metmaterial
Summary
The present day hand held devices are required to operate with various standards forcing them to operate at different frequency bands. Metamaterials are good choice for designing compact multifunctional antennas since they have special electromagnetic properties [2,3,4] These materials will support backward wave propagation, due to which left handed bands (zeroth order or negative order modes) are produced. Split Ring Resonators (SRRs), Vertical metallic VIAs are used to construct metamaterials The pioneers in this area analyzed the Composite Right/ Left Handed transmission lines (CRLH TL) based on transmission line theory. Dual band patch antennas based on ENG TL are designed and analyzed in [7, 8, 9 and 10]. The current on the patch is perturbed to obtain resonance at higher frequency band They offer only linear polarization at both the bands with a narrow bandwidth. The CP at upper 5G band is achieved by using fractals at the boundaries [11]
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