Abstract
This paper exhibits a high-gain, low-profile dipole antenna array (DAA) for 5G applications. The dipole element has a semi-triangular shape to realize a simple input impedance regime. To reduce the overall antenna size, a substrate integrated cavity (SIC) is adopted as a power splitter feeding network. The transition between the SIC and the antenna element is achieved by a grounded coplanar waveguide (GCPW) to increase the degree of freedom of impedance matching. Epsilon-near-zero (ENZ) metamaterial technique is exploited for gain enhancement. The ENZ metamaterial unit cells of meander shape are placed in front of each dipole perpendicularly to guide the radiated power into the broadside direction. The prospective antenna has an overall size of 2.58 and operates from 28.5 GHz up to 30.5 GHz. The gain is improved by 5 dB compared to that of the antenna without ENZ unit cells, reaching 11 dBi at the center frequency of 29.5 GHz. Measured and simulated results show a reasonable agreement.
Highlights
Substrate Integrated Cavity FedNowadays, the demand for millimeter-wave wireless systems has increased due to their gigabyte data rates
Several teams have been adopted by the International Telecommunication Union (ITU) to accomplish all 5G standards before
The 5G bands are not completely established, various bands are candidates [2]. The frequency bands such as sub 3 GHz, sub 6 GHz, and submillimeter bands are endorsed for 5G applications
Summary
Substrate Integrated Cavity FedNowadays, the demand for millimeter-wave (mm) wireless systems has increased due to their gigabyte data rates. Several teams have been adopted by the International Telecommunication Union (ITU) to accomplish all 5G standards before. The ITU assigned the frequency bands of the recent mobile generation (5G) between. 24 GHz and 86 GHz [1]. The 5G bands are not completely established, various bands are candidates [2]. The frequency bands such as sub 3 GHz, sub 6 GHz, and submillimeter bands are endorsed for 5G applications. The millimeter bands are highly recommended by academics than the low frequencies. The reason is that the low-frequency spectrum is congested and occupied by many applications. Several pieces of research have been reported considering the frequency band from 28 GHz to 38 GHz for
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