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In this paper, we propose an optimistic design of thinned planar antenna (TPA) array that provides radiation pattern with reduced peak, RMS and average side lobe levels (SLLs) required for radar operating scenarios. The main design objective is to inactivate some number of elements of the ab initio fully dense array while keeping the half power beam width (HPBW) and directivity unaffected and ensuring...
This paper presents thinning of a linear array that generates radiation patterns with reduced peak side lobe level (PSLL). Uniform amplitude excitation across all the elements is assumed and particle swarm optimization (PSO) technique is used to estimate the optimum combination of ‘on’ and ‘off’ elements corresponding to lowest possible peak SLL. In order to assess and validate the performance of...
The simulation and experimental studies of a compact dual segment cylindrical dielectric resonator antenna (DRA) for X-band applications are presented in this paper. The antenna consists of Teflon (εr = 2.1) as lower segment and ceramic material (Sr La2 Mg2 W2 O12) of dielectric constant εr = 22 and loss tangent tan δ = 0.0021 as upper segment. The simulation study of the antenna is carried out using...
In this paper performance of planar trapezoidal toothed log-periodic antenna on different dielectric substrates through simulation using FEM based Ansoft HFSS software has been presented. This antenna is a type of frequency independent antenna. The performance characteristics of the proposed antennas formed by providing definite conducting pattern characterizing the antenna on different substrate...
In this paper, a new four element rectangular dielectric resonator antenna (RDRA) for 5.0 GHz WLAN/WiMAX band is proposed. The simulation results for its radiation characteristics and the specific absorption rate (SAR) distribution in a homogenous bio-medium (muscle layer) for different antenna-to-muscle layer spacings are presented at different frequencies in 4.9–5.9 GHz band. The input characteristics...
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