Ultrawideband microstrip patch antenna with quadruple band notch characteristic using negative permittivity unit cells

Abstract

This article presents the design of an ultrawideband antenna with quadruple band notch characteristic using negative permittivity unit cells. Quad notched band characteristics are achieved at desired frequency bands by etching four complementary split ring resonators on the modified rectangular patch, which is then validated by experimental results. The antenna has impedance bandwidth for voltage standing wave ratio (VSWR) <2 from 2.85 to 11.52 GHz, with a notched band characteristic in the sub‐6 GHz 5G (3.39‐3.82 GHz), IEEE 802.11a WLAN at 5.2 GHz (5.13‐5.40 GHz), IEEE 802.11a WLAN at 5.8 GHz (5.71‐5.91 GHz), and ITU 8 GHz (7.5‐8.61 GHz) signal bands. Furthermore, the antenna has a compact overall size of 40 × 30 × 0.81 mm3 with a stable radiation patterns.

A compact flexible fractal ultra‐wideband antenna with band notch characteristic

“…Table 1 presents the performance comparison of the proposed antenna with the existing fractal and band‐notched antennas. The results show that although the antennas in References 24–26 also use complex CSRR to achieve band notch characteristics, their performance is inferior to the proposed antenna in terms of size and bandwidth. In addition, none of the antennas in References 3, 10–12, 15–18, 23–26 and 35 are flexible, which makes these antennas unable to bend.…”

“…The results show that although the antennas in References 24–26 also use complex CSRR to achieve band notch characteristics, their performance is inferior to the proposed antenna in terms of size and bandwidth. In addition, none of the antennas in References 3, 10–12, 15–18, 23–26 and 35 are flexible, which makes these antennas unable to bend. Although the antennas in References 36–38 have flexibility, they use a more common slot shape to achieve band rejection, and are larger in size and narrower in bandwidth than the antenna proposed in this paper.…”

“…Simultaneously, the research of band‐notched UWB antennas has also been widely concerned. A common method for realizing band notch characteristics is to etch slots of various shapes on the antenna surface 11‐26 . In addition, there are ways, such as using parasitic elements and electromagnetic bandgap structures, to achieve band rejection 27‐35 .…”

Triple Rectangular Notch UWB Antenna Using EBG and SRR

“…None of the reference antennas have a triplerectangular notching characteristics. The antennas presented [8,10,12,13,15,17] have conventional triple notches. The antenna presented in [19,20,25] is offering rectangular notch-bands only the WLAN band.…”

A compact flower slotted dual band notched ultrawideband antenna integrated with Ku band for ultrawideband, medical, direct broadcast service, and fixed satellite service applications

“…A T‐shaped parasitic is introduced to eliminate 4.9 to 6.1 GHz frequencies in Reference 11. By etching Complementary Split Ring Resonators in the radiating patch, the quadruple band notch characteristics are obtained from 3.39 to 3.82 GHz for 5G, 5.13 to 5.40 GHz for lower WLAN, 5.71 to 5.91 GHz for upper WLAN, and 7.5 to 8.61 GHz for ITU 8 GHz band in Reference 12. A modified mushroom type electromagnetic band gap structure is utilized for eliminating 4.9 to 6 GHz frequencies in Reference 13.…”