...Anoop Raghuvanshi; Abhinav Sharma; Abhishek Kumar Awasthi Purpose This study/paper aims to introduces a fast and efficient stochastic chaos game optimization ( CGO ) algorithm for pattern synthesis of linear antenna array ( LAA ). Design/methodology/approach CGO algorithm is used...

...Ahmet Turgut; Begum Korunur Engiz Purpose Currently, massive multiple-input multiple-output (m-MIMO) antennas are typically designed using complex trial-and-error methods. The purpose of this study is to determine an effective optimization method to achieve more efficient antenna design processes...

...Ajit Kumar Singh; Santosh Kumar Mahto; Rashmi Sinha Purpose This study aims to present dual band reconfigurable MIMO antenna for 5G (sub-6 GHz) and WLAN applications. Design/methodology/approach To achieve optimum bandwidth, radiation pattern and radiation efficiency, the defected ground...

... permittivities (Figure 7). In practice, this antenna could be fabricated using a substrate integrated waveguide. However, a conventional rectangular waveguide is used here for illustrative purposes. The waveguide is excited through the lower layer, which has a fixed relative permittivity...

..., this paper aims to focus on the formulation of an effective and computationally light beamforming algorithm and its implementation on a novel realistic cylindrical-substrate microstrip array antenna with significantly decreased size, wideband operation and enhanced radiation characteristics. Design...

.../methodology/approach Two substrate layers have been used for the microstrip monopulse comparator system. The feed network and the comparator circuits are on the first substrate layer and the microstrip array antenna is on the second layer. The elements of the array antenna are novel square four-sided narrow...

... array of dipole antenna centrally connected to Gunn diode and (b) equivalent circuit of finite array of nonlinearly loaded antennas Amir Bahrami can be contacted at: bahrami94amir@gmail.com 11 08 2018 05 01 2019 19 03 2019 07 04 2019 24 04 2019 27 05 2019 30...

...Polyanna Mara Pereira; Felipe Campelo; Takuya Mori; Hajime Igarashi; Ricardo Adriano Purpose This paper aims to present a SPICE model to represent antennas in receiving mode. The model can be used to evaluate the performance of the antenna when it is coupled to several different nonlinear electric...

...Ana Jovanović; Luka Lazović; Vesna Rubežić Purpose The purpose of this paper is to use the proposed algorithm for the fast adaptation of the antenna array radiation pattern on the particular scenario of the incoming signals. The fitness function to be minimized includes the precise estimation...

... – The CCM convergence rate is fast and this method is more efficient than the other existing methods. Specially, it can attain less than 1 percent relative errors by using 32 basis functions when a/h is bigger than 2×10−5 where h is the half length of wire antenna...

...Ademola O. Kaka; Mehmet Toycan; Stuart D. Walker Purpose – A vertically stacked, three layer hybrid Hilbert fractal geometry and serpentine radiator-based patch antenna is proposed and characterized for medical implant applications at the Industrial, Scientific and Medical band (2.4-2.48 GHz...

...Ivo Doležel; Yuanhao Wang; Michael Berens; Alexander Nietsch; Werner John; Wolfgang Mathis Purpose – The purpose of this paper is to present an optimization process for the design of a 2×2 patch antenna phased array with application for an UHF RFID system. Design/methodology/approach...

.../methodology/approach – The immunity tactic is a new powerful optimization tool inspired by immune system. It was used with success to achieve the conformal antenna radiation synthesis in an acceptable processing time. Findings – Radiation synthesis of conformal antenna arrays based on immunity tactic...

... of a high T_c superconducting microstrip antenna with an air gap and cover layer. Initially, the authors use an integral method of moment which enabled them to exploit the spectral tensor of green. The resolution of the integral equations of the electric field by the procedure of Galerkin makes...

...Prof. Norio Takahashi; Sami Bedra; Siham Benkouda; Tarek Fortaki Purpose – The paper aims to propose an artificial neural network (ANN) in conjunction with spectral domain formulation for fast and accurate determination of the resonant frequency and quality factor of circular microstrip antenna...

...Kamil Boratay Alici; Mehmet Deniz Caliskan; Filiberto Bilotti; Alessandro Toscano; Lucio Vegni; Ekmel Ozbay Purpose – Metamaterial unit cells composed of deep subwavelength resonators brought up new aspects to the antenna miniaturization problem. The paper experimentally demonstrates...

... – The proposed screen consists of an inductive double resonant element FSS, i.e. a regular array of circular holes in a metal thick plate, in order to grant the robustness to mechanical stress for antenna applications in extreme conditions. Findings – The proposed design of a multi-band frequency selective...