Gain enhancement of microstrip antenna with a novel DNG material

Abstract

In this study, a novel double‐negative compact metamaterial (MM) that can operate in Ku‐band (12 GHz) is designed and fabricated. It is shown that the proposed structure can be used as a MM for a wide bandwidth of 6 GHz. A double electromagnetic lens layer is then formed using this MM unit cell in an array. Afterwards, obtained lens layers are used together with a conventional microstrip patch antenna (CMPA) operating at 12 GHz. The effect of the MM on the antenna gain and directivity is examined. The CMPA and MMs are fabricated, and measurements are performed in Akdeniz University Microwave Laboratory and simulated with Microwave Studio by Computer Simulation Technology. 71% and 50% improvement in antenna gain and directivity are obtained by using it as a double MM lens layer.

High‐gain UWB antenna with optimized metamaterial lens layer via particle swarm optimization algorithm for satellite communication applications

“…Because of this focus, metamaterial structures are frequently used to improve antenna performance in many antenna applications. 7,8 The purpose of using metamaterials in this study is to increase the antenna gain by using them on the defected ground structure (DGS) antenna and on the lens layer.…”

“…For this purpose, four different applications are made on DGS-based patch antenna using flower shape metamaterial (FSMM) structure and PSO. FSMM, which is first introduced in the literature with the Reference [7], is a metamaterial structure with negative refraction between 9-15 GHz. In mostly studies where antenna and metamaterials are used together, the distance between metamaterials is changed repeatedly at regular intervals to obtain the highest antenna gain.…”

“…These reverse refractive properties of the metamaterials result in the concentration of the electromagnetic focus at one point instead of dispersing and weakening in different directions. Because of this focus, metamaterial structures are frequently used to improve antenna performance in many antenna applications 7,8 . The purpose of using metamaterials in this study is to increase the antenna gain by using them on the defected ground structure (DGS) antenna and on the lens layer.…”

Composite right/left‐handed ultra‐wideband metamaterial antenna with improved gain

“…The MTMs have also been utilized for the gain enhancement of a wide variety of antennas. Such MTMs include the double‐negative (DNG) materials, mu‐negative (MNG) materials, artificial magnetic conductors (AMCs), split‐ring reflector metasurfaces, complementary split‐ring resonators (CSRRs), and other novel MTMs 34‐38 . In Reference 34, a novel DNG MTM is used to design the double layer electromagnetic lens which improves the gain of a conventional microstrip antenna by 71%.…”

“…Such MTMs include the double-negative (DNG) materials, mu-negative (MNG) materials, artificial magnetic conductors (AMCs), split-ring reflector metasurfaces, complementary split-ring resonators (CSRRs), and other novel MTMs. [34][35][36][37][38] In Reference 34, a novel DNG MTM is used to design the double layer electromagnetic lens which improves the gain of a conventional microstrip antenna by 71%. A number of nonperiodically distributed MNG unit-cells are deployed for the bandwidth and gain enhancement of a loop antenna in Reference 35.…”