Fork‐shaped patch printed ultra‐wideband slot antenna with dual band‐notched characteristics using metamaterial unit cells

Abstract

In this article, a miniaturized fork-shaped patch ultra-wideband (UWB) planar wide-slot antenna with dual band-notched characteristics is proposed. With forkshaped patch, ultra-wideband impedance matching from 3.1 to 13.2 GHz is easily achieved. Then, two novel and simple methods are applied to solve the difficulty for UWB slot antennas with fork-shaped patch to realize band-notched characteristics. By etching one pair of I-shaped resonators on both branches of the fork-shaped structure and adding a rectangular single split-ring resonator in the rectangular openings of fork-shaped patch, the wireless local area network (WLAN) band from 5.5 to 6.1 GHz and the International Telecommunication Union (ITU) 8 GHz band from 7.9 to 8.7 GHz are rejected, respectively. The coplanar waveguide-fed UWB antenna is successfully designed, fabricated, and measured. The measured and simulated results show a good agreement. The antenna provides nearly stable radiation patterns, high gains and high radiation efficiency. K E Y W O R D S dual-band notch, I-shaped resonator, rectangular single SRR, UWB antenna

CPW-Fed Miniaturized Isosceles Triangular Slot Uwb Planar Antenna With Triple Band-Notched Characteristics

“…X-band signals are rejected when an open single I-shaped slot is inserted into the patch, and this case is shown in trace 3 (antenna 3). In the last step, the WLAN band is rejected by the integration of two SRR metamaterial slots [15]. This last trace illuminates the behavior of the final combined proposed structure (antenna 4), which consists of novel triple band filtered 5G, WLAN, and X-band signals.…”

“…Therefore, its density is high in the open I-slot to filter the third band (8 GHz) while the current at 9 GHz is uniformly distributed in the patch elements. Thus, these slots prove that the production of the eliminating waves is caused by resonating at the filtered frequencies [15]. Figure 8 illuminates the simulated realized gain and radiated efficiency of the triple band notched antenna.…”

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

“…For the proposed FSA, the realized gain is −2.10 dBi at 5.6 GHz and -1.91 dBi at 7.4 GHz represents the antenna eliminates WLAN and X-band signals. Moreover, the gain varies from 2.21 to 3.55 dBi, except at notched bands over operating frequencies of FSA represents the proposed FSA gain is more stable than the reported antennas [22][23][24][25][26][27][28][29][30][31][32][33][34] in Table 3.…”