This paper presents the shaping optimization of an S-band cylindrical offset reflector antenna with cosecant-squared radiation pattern in elevation plane. The cross section of the antenna is mathematically modeled by a polynomial function and optimized by the genetic algorithm to obtain the desired pattern for both TE and TM polarizations. The physical optics method together with the uniform th...

In this article, a concept of phased antenna array based on substrate integrated waveguide (SIW) technology for 5G base stations is proposed. The has cosecant radiation pattern in the vertical plane uniform illumination sector area. itself consists 16 SIW traveling wave subarrays 12 slot-coupled microstrip patch antennas associated with pair reflection-canceling vias and phasing elements to get...

This work presents the design and realization of four linear arrays microstrip rectangular patch antennas. array is one elements a passive radar using signals from 4G base stations for UAV detection. The have been validated operate 2.62 GHz to 2.69 GHz, with HPBW 82° in H-plane maximal gain going 11.1 dB 12.2 required bandwidth, cosecant squared pattern E-plane.

─ In the present work, a circular conformal array with wideband printed dipole antennas and wideband feeding network has been designed to obtain a fully constrained cosecant squared radiation pattern using particle swarm optimization (PSO) algorithm and mutual coupling compensation. Using the circular conformal design leads to a decrease of around 33% of the length of the array antenna compared...

Airport surveillance radars (ASR) utilize a broad, cosecant-squared elevation beam pattern, rapid azimuthal antenna scanning, and coherent pulsed-Doppler processing to detect. and track approaching and departing aircraft. These radars, because of location, rapid scan rate, and direct air traffic control (ATe) data link, can also provide flight controllers with timely information on weather cond...

A wide band, integrated linear printed antenna array with low sidelobe cosecant square-shaped beam pattern is presented. Array synthesis mainly about the wide shaped coverage, low ripple and sidelobe level (SLL) has been done using the modified least square method by matrix inversion. A printed dipole integrated with wideband balun has been chosen as the array element for wide bandwidth and goo...

Local Multipoint Distribution Services (LMDS) Network operating in 40.5 – 43.5 GHz band in Europe requires relevant planning tool for its deployment. An accurate knowledge of the propagation environment (buildings, trees...) is necessary especially in urban areas. This paper presents software based on Ray Tracing method using 3D Geographic Information System (GIS) database. Several series of si...