Two lens-antenna system for mm-wave biological experiments

2011 ◽  
Author(s):  
K. Komoshvili ◽  
B. Kapilevich ◽  
B. Litvak ◽  
Y. Nagar
Keyword(s):  
Antenna System ◽  
Lens Antenna

Planar beam steerable lens antenna system using non-uniform feed method

2014 ◽  
Author(s):  
Jungsuek Oh ◽  
George Z. Hutcheson ◽  
Farshid Aryanfar ◽  
Wonbin Hong ◽  
Young Ju Lee
Keyword(s):  
Antenna System ◽  
Lens Antenna

Tape Casting of Ba0.7Sr0.3TiO3 for Tunable Microwave Devices

2007 ◽  
Vol 336-338 ◽  
pp. 109-110
Author(s):  
Chen Ai ◽  
Hao Xue ◽  
He Ping Zhou
Keyword(s):  
Surface Roughness ◽  
Tensile Strength ◽  
Dielectric Properties ◽  
Tape Casting ◽  
Antenna System ◽  
Microwave Devices ◽  
Lens Antenna ◽  
Casting Technique ◽  
Structure Morphology ◽  
Tunable Microwave

In this work, tape-casting technique was employed to prepare Ba0.7Sr0.3TiO3 films for lens antenna system. Effects of slurry properties on the tape casting procedure were investigated and the thickness, tensile strength and the surface roughness of the tapes were studied. The structure, morphology and the dielectric properties of the films were analyzed.

scholarly journals 3D Metallic Plate Lens Antenna based Beamspace Channel Estimation Technique for 5G Mmwave Massive MIMO Systems

2021 ◽  
Vol 13 (1) ◽  
pp. 1-16
Author(s):  
Prosenjit Paul ◽  
Md Munjure Mowla
Keyword(s):  
Channel Estimation ◽  
Massive Mimo ◽  
Phase Shifter ◽  
Mimo Systems ◽  
Multiple Input Multiple Output ◽  
Antenna System ◽  
Phase Shifters ◽  
Lower Amount ◽  
Metallic Plate ◽  
Lens Antenna

Beamspace channel estimation mechanism for massive MIMO (multiple input multiple output) antenna system presents a major process to compensate the 5G spectrum challenges caused by the proliferation of information from mobile devices. However, this estimation is required to ensure the perfect channel state information (CSI) for lower amount of Radio Frequency (RF) chains for each beam. In addition, phase shifter (PS) components used in this estimation need high power to select the beam in the desired direction. To overcome these limitations, in this work, we propose Regular Scanning Support Detection (RSSD) based channel estimation mechanism. Moreover, we utilise a 3D lens antenna array having metallic plate and a switch in our model which compensates the limitation of phase shifters. Simulation results show that the proposed RSSD based channel estimation surpasses traditional technique and SD based channel estimation even in lower SNR area which is highly desirable in the millimeter wave (mmWave) massive MIMO systems.

scholarly journals STEERABLE TOROIDAL BIFOCAL LENS-ARRAY ANTENNA IN 57–64 GHZ RANGE

2019 ◽  
Vol 22 (3) ◽  
pp. 36-47
Author(s):  
Alexander A. Maltsev ◽  
Valentin M. Seleznev ◽  
Alexander S. Rulkov ◽  
Olesya V. Bolkhovskaya
Keyword(s):  
Low Cost ◽  
Antenna System ◽  
Base Station ◽  
Cellular Systems ◽  
Array Antenna ◽  
Lens Antenna ◽  
Lens Array ◽  
Steerable Antenna ◽  
Antenna Systems ◽  
Relay Stations

Introduction. Currently, one of the most promising approaches of the 5th generation mobile wireless systems development is the deployment of heterogeneous networks based on existing LTE cellular systems with large and small cells. The main elements of such networks can be small low cost relay stations equipped with highly directional steerable antenna systems to connect small cells with LTE base station serving macrocell. Objective. Existing solutions are either too expensive or not allowing flexible rearrangement of current information transmission lines. The objective of this work is to develop antenna equipment for low cost relay stations based on simple steerable antenna systems of millimetre wavelength (57-64 GHz), which allow beamsteering in both azimuth and elevation planes. Methods and materials. The developed steerable bifocal lens antenna system is a lens of a special shape made of a high molecular weight polyethylene and integrated with a phased array antenna. A key feature of the designed antenna system is a wide-angle beamsteering in the azimuth plane and ability to adjust the beam in the elevation plane. The calculation of the lens profiles was carried out by means of an approximation of geometrical optics in Matlab, and the main technical characteristics of the lens antenna system were obtained by direct electromagnetic modelling in CST Microwave Studio. Results. The prototype of the steerable bifocal lens-array antenna system is developed and its characteristics are studied. The following technical characteristics are achieved in the 57–64 GHz range: beamsteering in the elevation plane is ±3º, beamsteering in the azimuth plane is ±40º, and antenna gain is from 20 to 27.5 dBi for all angles. Conclusion. It was shown that the developed antenna system can be successfully used as receiving and transmission antenna equipment of small relay stations that transmit information in the frequency range of 57-64 GHz over a distance of 100-300 m.

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