Essays about: "Cylindrical antenna array"

Found 4 essays containing the words Cylindrical antenna array.

  1. 1. Wideband Dielectric Resonator Antenna Array for Autonomous Vehicles

    University essay from Högskolan i Halmstad/Akademin för informationsteknologi

    Author : Andreas Johansson; Luke Müller; [2023]
    Keywords : DRA; dielectric resonator antenna; 5G; FR2; 28GHz; NR; antenna; circular polarization; autonomous vehicles;

    Abstract : With the rapid advancement of autonomous vehicles, reliable and efficient wireless communication systems with high data rates have become essential for their safe and efficient operation and further evolution. High data rates are found in the higher frequency bands where conductive antennas lack radiation efficiency. READ MORE

  3. 2. An investigation on the possibility for bandwidth improvement of dielectric antennas via modification of their geometry

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Nandan Dutta Chaudhury; [2020]
    Keywords : Multifunctional antenna array; AESA; Additive manufacturing; Stereolithography; Ultra-wideband antenna; Dielectric antenna; Embedded DRA; PSF; Multifunktionell antenngrupp; AESA; Additiv tillverkning; Stereolitografi; Ultrabredbandig antenn; Dielektrisk antenn; Inbäddad DRA; PSF;

    Abstract : The dielectric antenna is an interesting alternative to a metallic antenna. This is mainlydue to its low manufacturing cost and the possibility to fabricate complex antennageometry with the aid of additive manufacturing (AM). Sophisticated AM technologyprovides new degrees of freedom in shaping the outer and inner geometry of antennas. READ MORE

  4. 3. Massive MIMO Channel Modeling

    University essay from Lunds universitet/Institutionen för elektro- och informationsteknik

    Author : Yongchun Wang; Xin You; [2015]
    Keywords : massive MIMO; 5G; channel modeling; the Kronecker model; the Weichselberger model; capacity; sum-rate; singular value spread; the Random Cluster Model; cluster; spatial correlation; large-scale fading; Technology and Engineering;

    Abstract : Massive MIMO has attracted many researchers’ attention as it is a promising technology for future 5G communication systems. To characterize the propagation channels of the massive MIMO and to evaluate system performance, it is important to develop an accurate channel model for it. In this thesis, two correlative models, i.e. READ MORE

  5. 4. Investigation of a small-sized omnidirectional antenna

    University essay from Institutionen för datavetenskap, fysik och matematik, DFM

    Author : Iuliia Goncharova; [2012]
    Keywords : Dipole; Directivity; Cylindrical antenna array; Omnidirectional antenna; Radiation pattern; Yagi-Uda dipole array;

    Abstract : The purpose of this research is to find ways to create an omnidirectional antenna with high directivity in the vertical plane. The investigation is based on computer simulation using the program CST 2011. The objective is a narrow-band antenna that is omnidirectional in the horizontal plane and has maximum achievable directivity for a fixed size. READ MORE