Design and optimization of a microstrip patch antenna for increased bandwidth

Abstract

With the ever-increasing need for wireless communication and the emergence of many systems, it is important to design broadband antennas to cover a wide frequency range. The aim of this paper is to design a broadband patch antenna, employing the three techniques of slotting, adding directly coupled parasitic elements and fractal electromagnetic band gap (EBG) structures.The bandwidth is improved from 9.3 to 23.7%. A wideband ranging from 4.15 to 5.27 GHz is obtained. Also, a comparative analysis of embedding EBG structures at different heights is also done. The composite effect of integrating these techniques in the design provides a simple and efficient method for obtaining low-profile, broadband, and high-gain antenna. By the addition of parasitic elements the bandwidth was increased to 18%. Later on by embedding EBG structures the bandwidth was increased up to 23.7%. The design is suitable for a variety of wireless applications like WLAN and radar applications.

Matlab-Based Computer-Aided-Design Algorithm for Designing Stepped-Impedance Resonator Low-Pass Filters in Microstrip Technology

“…The comparisons of our data with data obtained using Ansoft circuit simulator and the HFSS simulator are shown in Figs. 12,13,14,and 15. Barring some understandable discrepancies due to reasons already discussed (discontinuity effects, dispersion, etc.)…”

Using parasitic elements for implementing sectoral patch antenna array for wireless applications

“…Therefore, mutual coupling can be utilized to achieve bandwidth enhancement with desired performance of reflection coefficient and realized gain by cancelling the reflected waves from each element to the feeding network. Because printed slot antennas are promising candidate used in phased arrays, satellite communication systems and airborne applications due to their compact size and high efficiency, two and four element slot arrays are used to study their mutual coupling and to demonstrate the bandwidth enhancement by invoking suitable mutual coupling [13–16]. Mutual coupling between array elements affects both the embedded element radiation patterns and the element input impedances.…”

A new biopolymer substrate‐based compact monopole antenna covering RFID, WiMAX, and C/X‐band

“…As for example, introducing artificial magnetic conductor , implementing fractal structures , cutting slots of different shapes and sizes on radiating patch , constructing electromagnetic bandgap structure , adding stubs or parasitic elements , using defected/reformed ground plane and so on. The recently published literatures have suggested various method to widening the operating bandwidth of antennas, like adding extra resonators , using meandered strips , applying aperture coupled feed , using thick dielectric substrate , modifying the ground plane , and so forth. To overcome the limitations and meet the growing demands of multiband functionality, a suitable microstrip patch antenna of simple geometrical structure with reduced dimension and light weight has to be designed by exploiting the potentialities of latest technology.…”