Abstract
A compact concentric structured monopole antenna for super wide band (SWB) applications with triple notch band characteristics is designed and experimentally validated. The antenna covers an immense impedance bandwidth (1.6–47.5 GHz) with sharp triple notch bands at 1.8–2.2 GHz, 4–7.2 GHz, and 9.8–10.4 GHz to eliminate interference from co-existing advanced wireless services (AWS), C bands, and X bands, respectively. By loading an E-shaped stub connected at the top of the patch and by etching a split elliptical slot at the lower end of the radiating patch, the band rejection characteristics from 1.8–2.2 GHz for the AWS and 4–7.2 GHz for the C band are achieved, respectively. Further, by making use of a C-shaped resonator near the feed line, band rejection from 9.8–10.4 GHz for the X band is obtained. By varying the parameters of the antenna, the notch bands are controlled independently over a wide range of frequencies. The antenna provides good radiation characteristics, constant group delay response, and better gain over the pass band. The experimental results indicate that the designed antenna offers a remarkable reduction in gain and high variation in group delay over the stop bands. To characterize the wideband property and linear phase response of the designed antenna, its time-domain performance is extensively described and evaluated, which assure pulse transmission with minimum distortion.
Highlights
This increasing demand leads to the requirement for antennas that are able to cover multiple bands for accommodating several communication standards within a single system in consideration of the fact that the frequency spectrum allocated for ultrawideband (UWB) by the Federal Communications Commission (FCC) is from 3.1 to 10.6 GHz
The geometry of the proposed super wide band (SWB) monopole antenna with triple band-notched characteristics is depicted in Figure 1, its related parameters are indexed in Table 1, and the configuration is detailed analysis has been given in [16]
Simulated and measured result showed that the designed antenna operated at 1.67–47.5 GHz with VSWR below 2, except the triple notched bands at 1.8–2.2 GHz, 4– 57. .R2eGsuHlzts, aanndd D9.i8s–c1u0s.s4ioGnHz for rejecting the advanced wireless services (AWS) and C and X band signals, respectively
Summary
Wireless communication systems have grown at a significant rate. Wireless consoles for future applications are necessary to support distinct services. This increasing demand leads to the requirement for antennas that are able to cover multiple bands for accommodating several communication standards within a single system in consideration of the fact that the frequency spectrum allocated for ultrawideband (UWB) by the Federal Communications Commission (FCC) is from 3.1 to 10.6 GHz. There is a requirement for a competent super wide band (SWB) antenna that should be capable of functioning over the entire ultra-wide band, as assigned by the FCC, and that should cover lower frequency bands. To alleviate the electromagnetic interference effect of an SWB system over the narrowband system and vice-versa, an SWB antenna with a band-notch feature is desirable for coexisting wireless communications
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