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In this work, an ultra‐wideband double slot Vivaldi antenna (DSVA) loaded with a novel wideband nonresonant metasurface is proposed to enhance the gain. The semi‐elliptical slots are etched on both sides of the ground plane of the DSVA to improve the current distribution. In addition, the nonresonant metasurface composed of WiFi‐shaped unit cells could maintain a stable high refractive index in the...
A two-step method is proposed to compute the antenna array parameters for reducing excitation complexity of plane wave generator in this paper. Both the least squares method and genetic algorithm are combined to figure out the phase and position of each unit with selected amplitude. The validity of the method is confirmed by computer simulation and virtual experiments.
In this paper, a compact multi-band cylindrical dielectric resonator antenna (DRA) loaded with CSRR is presented. The DRA is composed of a semi-cylindrical dielectric resonator with metal ground sheet on the cut plane loaded with metamaterial structure. It is fed by aperture coupled microstrip line. The antenna size is about 50% decreased compared with the full cylindrical DRA. The SCRR is used to...
In this paper, a novel microstrip antenna using interdigital capacitor is proposed. The DGS technology is used to further reduce the size of the antenna. The size of the improved antenna is 24% of traditional rectangular microstrip antenna, and the antenna has frequency range 2.4–2.52 GHz with maximum gain of 2.35 dB, meet the requirement for ISM band applications, realize the miniaturization design.
In this paper, the application of dielectric resonator antenna (DRA) array in 5G communication system is studied. Firstly, an 8-way Wilkinson power divider with fold structure is designed, whose port phase and transmission efficiency are applicable for a feed network. Secondly, a kind of semi cylindrical DRA unit operated on 28 GHz is presented. It is fed by aperture coupled microstrip line. The 8-unit...
An H-shape dielectric resonator antenna with U-slot on the patch is presented in this paper, the H-shape dielectric resonator is mounted on the vertical ground plane edge. The U-slot is etched on the patch antenna to obtain the isolation from WLAN frequency (5.125 GHz– 5.825 GHz). The frequency bands for S11 ≤ −10 dB are from 3.61 GHz to 4.80 GHz and from 6.05 GHz to 9.56 GHz, respectively. The bandwidths...
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