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On behalf of the Organizing Committee, we welcome you to Vancouver, Canada and the 2015 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting!
In this article, a four-element dual-band printed slot antenna array for the future fifth generation (5G) mobile networks is proposed. The antenna element has a compact with size of 0.8 λ0 × 0.75 λ0 at 28 GHz. The simulated results show that the designed antenna has a dual-band function at 28/38 GHz that covers future 5G applications. The designed 1-to-4 modified Wilkinson power divider is used to...
A millimeter-wave (mm-wave) dielectric resonator (DR) based, multiple-input-multiple-output (MIMO) linear antenna array is presented. The array elements are cylindrical DR antennas (cDRAs) operating at 30 GHz with a bandwidth of at least 2 GHz. The MIMO antenna system consists of two, four-element arrays, each with a fixed beam direction which is electronically tilted to provide low field correlation...
We present a novel beamforming technique for multi-user indoor wireless communications called regularized time-reversal (RTR). A comparison with other time-reversal techniques is provided with respect to bit error rate and spatial focusing performance in mm-wave massive MIMO systems. We verify that the proposed technique can be used for space-division multiple access in such scenarios.
This paper presents a characterization method for millimeter wave (mmWave) phased array antennas in the mobile terminal for 5G communication. Arrays of different antenna designs, operating at 28 GHz, are evaluated according to novel characterization methods in this context - the total scan pattern of the phased array and its respective coverage efficiency. The results show the relevance of evaluating...
In this paper, we present a general method for obtaining MIMO antenna current distribution with optimum cross-correlation diversity gain. The method is illustrated with an example of 3-element arrays of wire antenna operating at 60GHz.
In this work, we present low profile lens and reflectarray design for millimeter wave. We use artificially engineered dielectric materials (Dial-a-Dielectric) for these designs. We present comparison results with legacy designs that show comparable or better performance. We compare results of a flat lens using commercial off-the-shelf (COTS) materials, as opposed to metamaterials that are often required...
A new topology of 60 GHz agile antenna based on EBG structures is presented with the aim of pattern reconfigurability. A design based on the idea of dividing the EBG unit-cells into eight sectors is considered. The EBG sectors are placed symmetrically around the antenna to achieve beam steering in the whole azimuth plane with an optimal design and a reduced level of complexity by using minimal number...
In this article an interoperable GNSS antenna for all common navigation services in cars in combination with a multiband short rod antenna in its center is presented. The antenna is designed for a cover with strictly limited volume for a roof mount position. It ensures a stable reception of GPS, Beidou, Galileo and GLONASS signals in L1- frequency band due to high realized gain in required elevation...
A wideband patch antenna is designed for a substrate with relative permittivity 9.8 and loss tangent 0.002. Impedance and axial ratio bandwidths exceeding 69% are achieved. The design is investigated using characteristic mode analysis to determine the modal resonances responsible for its wideband behavior. The results show that the lowest-order patch modes are broadband, and that probe and substrate...
Crossed dipoles placed in a conductive cup are known to give good Circularly Polarized radiation performance. Extensive modifications are made to this structure to provide reception of all Global Navigation Satellite System bands, reduced cross polarization, low backward radiation and high phase center stability.
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