scholarly journals Enhanced Efficiency and Reduced Side Lobe Level Convex Conformal Reflectarray

2021 ◽  
Vol 11 (21) ◽  
pp. 9893
Author(s):  
Michele Beccaria ◽  
Giuseppe Addamo ◽  
Mario Orefice ◽  
Oscar Peverini ◽  
Diego Manfredi ◽  
...  
Keyword(s):  
Mobile Communication ◽  
Communication Systems ◽  
Ad Hoc ◽  
Design Procedure ◽  
Side Lobe ◽  
High Gain ◽  
Curved Surface ◽  
Side Lobe Level ◽  
Mobile Communication Systems ◽  
Entire Structure

In this work, the design of a convex conformal reflectarray (CRA), suitable to be used for high gain on board antenna in mobile communication systems, is presented. The reflector is not planar, as in usual reflectarray configurations, but the re-radiating elements are printed on a surface conformed to a cylinder to mimic a curved surface, such as the fuselage of an airplane, on which the reflectarray could be mounted. To compensate for the loss in efficiency due to the curvature, an ad hoc feed is designed; the results obtained with the simulation of the entire structure and the measurements of its prototype prove the effectiveness of the design procedure and its capability in enhancing the CRA features, in comparison with similar but more conventional solutions.

Code-aided adaptive equaliser for mobile communication systems

1998 ◽  
Vol 34 (17) ◽  
pp. 1638 ◽  
Author(s):  
S. Tantikovit ◽  
A.U.H. Sheikh ◽  
M.Z. Wang
Keyword(s):  
Mobile Communication ◽  
Communication Systems ◽  
Mobile Communication Systems

An Alternative Queuing Technique to Optimize the Performance of TDMA Based Mobile Communication Systems

2004 ◽  
Vol 31 (3-4) ◽  
pp. 149-159 ◽  
Author(s):  
I. Panoutsopoulos ◽  
S. Kotsopoulos ◽  
K. Ioannou ◽  
S. Louvros
Keyword(s):  
Mobile Communication ◽  
Communication Systems ◽  
Mobile Communication Systems

scholarly journals Ka-Band Lightweight High-Efficiency Wideband 3D Printed Reflector Antenna

2017 ◽  
Vol 2017 ◽  
pp. 1-7 ◽  
Author(s):  
Yu Zhai ◽  
Ding Xu ◽  
Yan Zhang
Keyword(s):  
High Efficiency ◽  
Near Field ◽  
Side Lobe ◽  
High Gain ◽  
Reflector Antenna ◽  
Field Analysis ◽  
Side Lobe Level ◽  
Ka Band ◽  
3D Printed ◽  
Reflecting Surface

This paper presents a lightweight, cost-efficient, wideband, and high-gain 3D printed parabolic reflector antenna in the Ka-band. A 10 λ reflector is printed with polylactic acid- (PLA-) based material that is a biodegradable type of plastic, preferred in 3D printing. The reflecting surface is made up of multiple stacked layers of copper tape, thick enough to function as a reflecting surface (which is found 4 mm). A conical horn is used for the incident field. A center-fed method has been used to converge the energy in the broadside direction. The proposed antenna results measured a gain of 27.8 dBi, a side lobe level (SLL) of −22 dB, and a maximum of 61.2% aperture efficiency (at 30 GHz). A near-field analysis in terms of amplitude and phase has also been presented which authenticates the accurate spherical to planar wavefront transformation in the scattered field.

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