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It is used to improve the radiation, the output power and efficiency of power
amplifiers. This paper studies the application of millimetre waves for application in
5G technologies and the effect of substrate Photonic for this application. An antenna
in microwave frequency bands, for future mobile devices 5G, operating at 28 GHz
frequency with an EBG structure (Electromagnetic Band Gap) only in the ground
plane, aiming at a gain in bandwidth [5-6].
From this idea, developed a prototype that can make the transmission operating in
the 28 GHz frequency range, microwaves or radio waves, for a future fifth generation
5G. The program used for antenna simulation was the HFSS, a simulator of full-wave
electromagnetic field and used the Transverse Transmission Line Method - TTL for
the design of the antenna, according to the applied frequency [7].
2
Results
The EBG structure is configured for several cylinders of radius equal to 0.2 mm
etched in the ground plane [8].
Using the program ® HFSS (High Frequency Structural Simulator) was modeled
the antenna, using as a substrate, the RT/Duroid 5880, of Rogers Corporation, with
relative permittivity ʵ
୰
= 2.2 and loss tangent tanʴ = 0.0009 [9]. The antenna uses two
overlapped substrates of 0.25 mm, totalling 0.5 mm thickness to obtain a larger
bandwidth, as shown in figure 1:
Fig. 1.
Simulation of the Antenna using the program HFSS® (High Frequency Structural
Simulator) with cylinders of r = 0.2 mm etched in the ground plane
The dimensions of the patch are: patch dimension along x equal to 4.4 mm, patch
dimension along y 3.3 mm, substratate dimension along x 7.9 mm, substrate
dimension along y of 10.5 mm, substrate thickness of 0.5 mm, insert distance of 1.06
mm, insert gap of 0.385 mm, width of 0.77 feed and feed length of 3,264 mm,
according to figure 2:
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