Metamaterial Based Circular Disc Patch Antenna Miniaturization

Abstract

A novel metamaterial structure has been proposed for its operation at 2.4 GHz. A circular disc patch antenna resonating at dual band frequency with 2.4 GHz and 3.36 GHz has been designed using full field solver CST MWS tool and the loading effect of the metamaterial has been shown. The loading of metamaterial shows a radial size reduction of 56.71% in the circular disc patch (dimensional space reduction by 81.26%) while the effect of loading the metamaterial array and loading the metamaterial with defected ground plane show that without reducing the disc patch radius, the patch antenna can resonate at 1.00 and 1.942 GHz respectively, these yield a lower frequency shift of 58.33% and 19.79%. The designed metamaterial consists of two copper conductive concentric circular rings over a polyimide substrate. Various antenna parameters such as S11, VSWR, Bandwidth, Gain, Directivity and Radiation efficiency have been obtained for the circular disc patch antenna, circular disc patch antenna loaded with the metamaterial, circular disc patch antenna loaded with an array of metamaterial and are compared. A spice circuit has been derived for the reflection coefficient of the circular disc patch without loading the metamaterial, circular disc patch loaded with metamaterial using Keysight based ADS tool for its inclusion in a traditional electrical circuit solver tool.

Design of Wide-Band Microstrip Antenna for S-Band Telemetry Applications

“…A lot of techniques have been implemented to improve antenna's radiation pattern, bandwidth and efficiency [7]. Several attempts have been made to achieve the same by selecting a substrate of suitable thickness and dielectric constant [8]. In addition to it, modification of antenna geometry by incorporating number of patches, slots and shorting pins has also resulted in better efficiency, bandwidth, and size of the antenna [9].…”

Electrical Size Reduction of Microstrip Antennas by Using Defected Ground Structures Composed of Complementary Split Ring Resonator

“…ECENTLY together with the increasing demand for mobile communication systems, designing planar small antennas have become important and popular . In literature, the common methods of electrical size reduction (ESR) are using a substrate material with a high dielectric constant [1], using inductive and dielectric loadings [2,3,54], using magneto-dielectric materials [4,55], using metamaterial-based structures [5][6][7][8][9]55], using shorting pins [2,10,54] and finally using defected ground structures (DGSs) [44][45][46][47][48][49][50][51][52][53].…”

Performance improvement of microstrip patch antenna using a novel double‐layer concentric rings metaplate for 5G millimeter wave applications

“…[24][25][26][27][28] Recently, the gain of the patch antenna was improved by using two copper conductive concentric rings having DNG characteristics placed on the substrate. 29 Moreover, the bandwidth of the antenna was enhanced by minimizing the mutual coupling between two square shaped metal rings printed on opposite sides of the substrate. The bandwidth for the double-layered printed rings is wider than both metal rings printed on the single side of the substrate.…”

“…The bandwidth for the double-layered printed rings is wider than both metal rings printed on the single side of the substrate. 30 The proposed metamaterial is based on these works, 29,30 where a double-layer concentric rings metaplate (DLCRM) defined on both sides of a substrate is used for gain enhancement. This paper describes how the gain and bandwidth of the MPA are improved significantly using a novel DLCRM at mmWave.…”