## 1 Introduction  
Ultrawideband (UWB) communication systems have emerged as the most feasible solution for short-range, high-speed indoor data communications since the Federal Communication Commission (FCC) released the bandwidth 3.1-10.6 GHz. Following the FCC approval in 2002 for commercial use, UWB communication systems have grown popular among researchers and the wireless sectors [1]. As a result, a critical component of UWB communication systems, UWB antennas, has piqued numerous researchers' curiosity. The transmission and reception of signals in the UWB system use short electromagnetic pulses. The system's performance is principally governed by the characteristics of the radiators, which must meet rigorous frequency and time domain criteria across the entire working spectrum [2]. These specifications comprise a non-dispersive phase center, consistent radiation characteristics, and an impedance bandwidth without the stimulation of higher-order modes [3]. The monopole patch antenna arrangement has a small size, low cost, and broader impedance bandwidth, which is well-anticipated for UWB wireless applications [4]. So far, various types of monopole antenna geometries have been developed to cover the whole frequency range of UWB, comprising various types of radiating structures, engraving ground planes, embedding slits, slots, stubs on radiating, and ground planes as parasitic elements, as well as metamaterial loading [5; 6; 7; 8; 9; 10; 11]. The progress of wireless communication systems and the growing interest in wireless small-hand devices have increased the demand for operational frequency bands. This scenario has led to the crowded radio spectrum, and the regular frequency bands have begun to overlap. Even though the large frequency bandwidth of UWB systems offers several benefits, it creates interference with conventional wireless communication systems operating at different narrowband frequencies, such as the worldwide interoperability for microwave access (WiMAX) (3.3-3.7 GHz), C-band systems (3.7-4.2 GHz), the IEEE 802.1a standard-based wireless local network (WLAN) (5.15-5.825 GHz), and X-band satellite communication (7.25-7.745 GHz and 7.9-8.395 GHz) [12]. Therefore, compact large impedance bandwidth antennas having band-reject properties are needed for UWB applications. Different UWB antenna design techniques are available, such as dielectric resonators (DRAs) [13; 14] and microstrip patch antennas (MPA)s. The distinctive features of both types of antennas are determined by their dielectric characteristics. Despite the fact that DRAs appear to be more efficient than MPAs in several aspects, MPAs have benefits in mechanical processing, gain, and stability over DRAs [15]. Conventional approaches for band rejection features are primarily focused on using a half- or quarter-wavelength filter configuration in an antenna's design. The literature reveals many ideas for achieving single- and multi-band-notched features in UWB antennas [16; 17; 18], for example, an L-shaped slit on a radiating plane [19]; metamaterial loadings such as a split-ring resonator (SRR) and a complementary split-ring resonator (CSRR; the structure is not limited to the circle) [20; 21]; a bent slit engraved on a radiating plane [22], where different structures such as L, Z, and G are etched on a radiating or ground plane [23; 24] and are connected via the method described in [25]. In [26], a half-circle was embedded in a combination of two rectangular patches to achieve the UWB spectrum. The UWB dual-band notch was shown by the authors of [10] at 3.5 and 5.5 GHz. By placing J and inverted pi form slots onto the radiating plane, the WiMAX and WLAN band interference with the UWB was removed. In [24], a Z-shaped slot was engraved on the ground plane to achieve a frequency notching at the WLAN band. Reference [20] used an elliptical CSRR on a radiating plane to attain frequency notching characteristics at the WiMAX and WLAN bands. Dual-band notching is achieved in [19] by carving two L-shaped grooves on a radiator.