Miniaturized Sierpinski fractal loaded QMSIW antenna with CSRR in ground plane for WLAN applications

Abstract

In this paper, electrically small substrate integrated waveguide (SIW) antenna based on Sierpinski fractal and complementary split ring resonators (CSRR) are proposed. The antenna size is electrically reduced by the use of quarter‐mode substrate integrated waveguide (QMSIW) and Sierpinski fractals. The CSRR added on the ground plane introduces additional inductance and capacitance to the overall structure to further reduce the size. The overall size of the proposed antenna is 23 mm × 20.5 mm. The resonant frequency for the first mode of the antenna is tuned by rotating the CSRR structure, while maintaining almost identical radiation pattern and performance. The S‐parameters and radiation characteristics have been investigated by full‐wave EM‐simulation and measurement. For the first mode, the resonant frequency varies from 4.96 GHz to 5.88 GHz by the rotation of CSRR structure from 0° to 315° making it suitable for IEEE 802.11 WLAN applications. © 2017 Wiley Periodicals, Inc. Microwave Opt Technol Lett 59:1291–1295, 2017

Dual-Band Quarter Mode SIW Cavity Back Slot Antenna

“…The peak gain has slightly deviated from the boresight direction in QMSIW antennas which were discussed in [1][2][3][4][5][6][7][8] as most of the energy is coupled from the dielectric aperture.…”

“…A miniaturized antenna using QMSIW technique [2] is presented in which two stages of Sierpinski Fractal Geometry is incorporated on top of the cavity to decrease the resonant frequency. A top-loaded Sierpinski fractal geometry and bottom-loaded Complementary Split Ring Resonator (CSSR) QMSIW antenna [3] is proposed for size miniaturization. Here, fine-tuning of frequency from 4.96 to 5.88 GHz is achieved by rotating CSSR structure from 0 0 to 315 0 .…”

“…A miniaturized CSRR loaded QMSIW antenna [5] for navigation system applications is proposed. Antennas proposed [1][2][3][4][5] are excited by simple line feeding technique and QMSIW is realized from rectangular cavity resonators. A co-axial fed QMSIW triangular antenna [6] with compact slot using TE 101 mode is presented to radiate at 2.54 GHz frequency.…”

Triangular Shaped Qmsiw Cavity Back Slot Antenna for Tri-Band Operation

“…A QMSIW slot antenna operating in UHF (Ultra High Frequency) band is presented [3] in which two perpendicular rectangular slits are loaded on the uppermost layer. A QMSIW based antenna for WLAN (Wireless Local Area Network) applications is presented [4] in which top of the layer is loaded with a Sierpinski fractal structure while Complementary Split Ring Resonator (CSRR) is engraved on the ground layer. The frequency tuning is observed when the CSRR structure is rotated from 0 • to 315 • .…”

Compact tri‐band MIMO antenna based on quarter‐mode slotted substrate‐integrated‐waveguide cavity

“…Unfortunately, they have a drawback of large size. Fraction modes of the SIW cavity such as half mode (HM), quarter modes (QMs) and even eighth modes (EMs) offer a new route for antenna miniaturization. However, these antennas typically have a single operating band which limits them in multi‐standard applications.…”