Matching of an Antenna Put Inside a Planar Ebg Structure (original) (raw)
Related papers
Design of a directive and matched antenna with a planar EBG structure
IEEE Antennas and Propagation Society Symposium, 2004., 2004
The purpose of this presentation is to propose a method to design a directive and matched antenna with a planar Electromagnetic Band Gap (EBG) structure. The EBG structure of our example consist on metallic wires. This study use the FDTD method and analytical formulas.
IEEE Access
Electromagnetic Bandgap (EBG) structures that exhibit various performances, such as preventing the electromagnetic wave propagation and reflecting an incident wave within the stopband, have unique electromagnetic characterization. Due to this reason, accurate analysis and design of the EBG structures are crucial to enhance the integrated system performance. This paper concentrates on the characterization of some planar EBGs using the Auxiliary Functions of Generalized Scattering Matrix (AFGSM) methods, with particular importance on an in-depth consideration of its bandgaps. The AFGSM method is applied to the planar EBG structures in the literature for the first time. The well-known kinds (symmetric and asymmetric cases) of mushroom type and multilayer EBG structures are considered to verify the presented method. Analysis results are compared with the Conventional Eigenvalue Equation (C-EIV) and the Generalized Scattering Matrix based Eigenvalue Equation (GSM-EIV) methods. Low computation load and accurate results are obtained to analyze the planar EBG structures with the AFGSM method due to using transmission line model. In addition, a design methodology is proposed for a chosen planar EBG structure using the AFGSM methods. Geometrical parameters of interested EBG problems are determined for acquiring the stopband frequency region of interest using the scattering parameters of unit cell configuration. The mushroom EBG model along one and two-dimensional axes is used in an antenna application to decrease mutual coupling between antenna elements. Three different scenarios are simulated in the HFSS electromagnetic simulation design environment to understand the effect of mutual coupling reduction in the antenna problem of the designed EBG structure via the AFGSM method. All designed antennas are manufactured, and the measurement results are in good agreement with the simulation results. The measurement results of the fabricated antenna application example including designed EBG using the proposed AFGSM method are compared with the existing similar problems with the same and different EBG models. It has been demonstrated that bandgap analysis, design of the planar EBG structures and integration of considered EBG model to a design application can be accurately and quickly achieved with the given methodology using the AFGSM method. INDEX TERMS Electromagnetic bandgap structures, dispersion diagram, generalized scattering matrix, high impedance surface, periodic structures. DURMUS GEBESOGLU received the B.S. degree in electronics and communication engineering from Yildiz Technical University, Istanbul, Turkey, in 2013, and the M.S. degree in electrical and electronics engineering from Middle East Technical University, Ankara, Turkey, in 2017. He is currently pursuing the Ph.D. degree in electronics and communication engineering with Istanbul Technical University (ITU), Istanbul. He has been an RF Microwave Design Engineer with Aselsan Inc., Ankara, since 2013. His current research interests include low-profile antennas and electromagnetic bandgap structures.
Electromagnetic Band Gap (Ebg) Structure Antenna Design for Wide Band Applications
International Journal of Advance Engineering and Research Development, 2015
Electromagnetic band gap (EBG) structures that are engineered to achieve desired transmission and reflection characteristics in specific frequency bands, have long been actively studied in the microwave regime for a wide variety of applications. They have also been used as superstrates for directivity enhancement of antennas as well as substrates for height reduction of conformal antennas.In this study we develop some guidelines for systematically designing Enhanced Bandwidth antenna systems, comprising of a microstrip patch antenna (MPA) covered by a planar EBG substrate. At the beginning, the investigations of EBG were mainly on wave interactions of these structures at optical frequencies and hence PBG emerged with the name of photonic band-gap structures.EBG is due to the interplay between macroscopic and microscopic resonances of a periodic structure.The major Area of interest EBG structure gain with its enomourous advantage it offers like Mutual Coupling, Surface Wave Suppression at microwave frequencies. In my study I Concentrate on Mashroom EBG antenna which is a part of planer structure of microstrip patch array and using multiple layers of substrate we can achieve great Bandwidth enhancement.
Electromagnetic Band Gap Structures: Practical Tips and Advice for Antenna Engineers
2012
In this paper we discuss the use of electromagnetic band gap (EBG) structures in antenna engineering from a practical point of view. Our aim is to point out the most common mistakes and myths related to design, analysis and application of EBGs in the field of antennas. The paper could be helpful for beginners giving a short course on designing EBGs but also will bring novel findings for experts, investigating the effect of different number of unit cells on radiation characteristics of a planar antenna. An important part of the paper is the experiments showing the surface wave distribution over an EBG board and over the fabricated antennas with and without the periodic structure.
Metallic EBG structures for directive antennas using rectangular, cylindrical and elliptical shapes
IEEE Antennas and Propagation Society, AP-S International Symposium (Digest), 2005
This paper presents different designs of directive antennas using Electromagnetic Band Gap (EBG) structures. The EBGs consist of periodic structures of metallic wires. In this study, periodic structures in cartesian, cylindrical and elliptical coordinates are considered. Experimental results of antennas using these different geometries and a monopole as an excitation source are presented, and their performances are compared.
Design Anaysis of Patch Antenna Using Ebg Structure
Journal of emerging technologies and innovative research, 2018
Technology has become the most vital part of the daily life. With the development of antenna technology, the wireless devices became more capable of providing the services like Wi-BAN, point-to-point bridge, hotspot, public wireless, Wi-MAX, WLAN, Wi-Fi and wireless video systems. In this research work, we have been demonstrating the design composition of patch antenna backed by the electromagnetic band gap (EBG) structure to be operated at 4.8 GHz of resonant frequency. The dispersion diagram provides the aid to determine the bandgap characteristics of EBG structure. To cover the required band gap of 4.8 GHz, the dimensions of EBG structure are tuned and adjusted. The EBG was analyzed and implemented on coaxial feed microstrip patch antenna in order to determine the S11 parameter performances. Better results have been attained at a distance of -10 mm between the patch antenna and EBG in comparison to other varied distances. Index Terms Dispersion curve, Electromagnetic Band Gap (EB...
Electromagnetic Bandgap Structure for Antenna Design
A dual band electromagnetic band gap structure is designed, simulated and measured. This is carried out using CST microwave studio software, the design is carried out on FR-4 substrate by Method of Suspended Transmission Line. The structure posses a dual band gap that effectively suppress surface wave at the dual frequencies. The result from the simulation gives dual band gaps that resonate at 1.8GHz and 4.0GHz and the measured result resonate at 1.8GHz and 4.3GHz, this show there is a good agreement between the two results. The structure is simple and easily incorporated with microwave and wireless devices.
Antenna Design with EBG Structure for S-band
In wireless communication microstrip antenna play an essential role in the system So In this project a microstrip has been designed to operate from 2 GHz to 4GHz.To improve the efficiency an Electromagnetic band gap structure has been .Electromagnetic band gap structures work as a stopband to the frequencies for which the antenna is designed. A substrate FR-4 has been used with the thickness of 1.6mm.The paper is proposed for the S band frequency. The electromagnetic band gap structure shape proposed for this antenna is fork like structure. The fork like structure possesses small size with easy to design as compared to the other structures. The Electromagnetic band gap structures enhances the performance of the microstrip patch antenna. The EBG structure will reduce the return loss and improve the bandwidth for S band application. In terms of bandwidth and return loss we simulated the proposed antenna design