Abstract
In this paper, a metamaterial inspired antenna to operate in the C-band is designed, fabricated, and characterized. The structure is based on the metamaterial tripolar array, to obtain a better gain, bandwidth, and frequency resonance when compared to a conventional circular UWB antenna with same structural characteristics. Simulation and experimental results show an increase of about 32% on the bandwidth and 9% on the gain with a satisfactory radiation pattern.
Highlights
A wideband antenna is usually applied in wireless systems with high data transmission, like radar, satellite, medical, and multimedia in general [1,2,3,4]
With the study carried out, the model was used for the design a structure in order to improve the performance of a circular UWB patch antenna
The impedance matching is analyzed by S11, which may be lower or equal to -10dB in the operation band, due to 90% of the antenna input power to be radiated in this case [22]
Summary
A wideband antenna is usually applied in wireless systems with high data transmission, like radar, satellite, medical, and multimedia in general [1,2,3,4]. Patch antennas present low gain, which compromises its use in several applications. To overcome these problems, the metamaterial technology can be applied to planar antennas to improve its overall behavior, and eventually, achieve the best performance [9,10]. The metamaterial technology can be applied to planar antennas to improve its overall behavior, and eventually, achieve the best performance [9,10] In this way, the application of metamaterial technology, as Frequency Selective Surfaces (FSS), on patch antennas, can result in an increase of its low gain and bandwidth [11,12]
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