Abstract
This paper presents a novel method for the design of truncated microstrip patch antenna with DGS based on Double Looped CSRR arrays for enhancement of bandwidth. The proposed antenna is suitable for WLAN/Wi-Fi, RFID applications. A truncated microstrip patch antenna without DGS was initially designed for a resonant frequency of 2.86GHz having a bandwidth of 95.6MHz. By integrating a new Double Looped CSRR array (DLCSRR) structure on the ground plane, resonant frequency of the antenna is shifted to 2.47GHz and also the bandwidth is enhanced to 202.5MHz. By implementing DLCSRR array structure on the ground plane size reduction and bandwidth enhancement of 52.79% is achieved. The performance of truncated microstrip patch antenna with DGS based on Double Looped CSRR array structure was also compared by replacing conventional proximity fed microstrip patch antenna with the same physical size. The conventional proximity coupled microstrip patch antenna is designed for a resonant frequency of 2.26GHz with a lower bandwidth of 23.3MHz.The antennas were designed using CST simulation software. The measurement result shows a good agreement with simulated results.
Highlights
Microstrip patch antenna are commonly used in wireless communication due to its reduced size, low cost low profile and compatibility with integrated circuits
Proximity coupled Truncated microstrip patch antenna with Defected ground structure (DGS) based on Double Looped Complementary Split Ring Resonator (CSRR) arrays for enhancement of Bandwidth
The truncated microstrip patch antenna without and with DGS based on Double Looped CSRR arrays was fabricated and measurements were taken in the laboratory
Summary
Microstrip patch antenna are commonly used in wireless communication due to its reduced size, low cost low profile and compatibility with integrated circuits. Other miniaturization methods applied on Microstrip patch antennas include Defected Ground Structure(DGS) on the ground plane[5,6], providing slots on patch, or combination of both[7], usage of high permittivity dielectric substrate etc[8]. In this paper, truncated microstrip patch antenna with DGS based on Double Looped Complementary Split Ring Resonator (CSRR) arrays for enhancement of bandwidth is presented. Bandwidth enhancement is achieved by etching this double looped CSRR array structure from the ground plane of the proposed truncated microstrip patch antenna. Proximity coupled feeding method is carried out with radiation patch which is placed on the top of the upper substrate and feed line is positioned in between the two substrates
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