High Gain Dielectric Resonance Antenna Array for Millimeter Wave Vehicular Wireless Communication

Abstract

This paper presents a high gain dielectric resonance antenna (DRA) array for vehicular wireless communication and 5G system in millimeter wave band, which takes the advantage of low side lobe level (SLL). The planar antenna array is composed of 8 × 8 rectangular DRA elements, whose operation mode is the fundamental mode TE 111 . The beamforming weights of the array are designed based on the principle of Dolph-Chebyshev distribution to suppress the antenna SLL. The planar array consists of 8 linear sub-arrays, which are fed with standing-wave series resonance method respectively. The excitations of sub-array elements are precisely adjusted based on the aperture coupling model. Furthermore, the series-parallel hybrid feed network and parallel-cascaded feed network are applied to unequally feed the sub-arrays in accordance with Chebyshev polynomials. The measurement results of prototype validate the design solution of antenna array. The impedance bandwidth is 570 for reflection coefficients less than −10 dB, and the antenna gain and SLL are 20.5 ± 1 dBi and 20 dB, respectively. Due to the advantages of miniaturization and narrow beam, the proposed DRA antenna array is adequate for vehicle communication equipment.

Precise Positioning of Redundant Robot Motion Energy-Saving Control Based on Sensing Technology

“…In order to facilitate the transmission of the central station, the relationship between the geometric distribution of the base station and the actual attenuation is considered. e simulation results suggest that the preliminary data provided by the IMU may affect the error analysis of the UWB [9].…”

Wideband mm-Wave Hemispherical Dielectric Resonator Antenna with Simple Alignment and Assembly Procedures

“…On the other hand, a DRA represents a suitable alternative due to the absence of ohmic losses and attractive radiation characteristics that can be achieved through appropriate combination of the resonator dimensions and the relative permittivity, as well as a suitably chosen feeding technique [7]. Therefore, mmwave single DRAs, as well as arrays, have been reported in several studies over the last few years [8][9][10][11][12][13]. However, DRA alignment and assembly represent key challenges at mm-wave frequencies since any marginal misalignment between the DRA and feeding network can have a significant impact on the antenna's performance [14,15] due to the shorter wavelengths and the physically smaller antenna size.…”