Design and comparative analysis of circuit theory model‐based slot‐loaded printed rectangular monopole antenna for UWB applications with notch band

Abstract

In this paper, a slotted printed rectangular monopole antenna (SPRMA) is proposed that covers the entire UWB (ultra-wideband) except for WiMAX and . In the first stage, a rectangular monopole antenna is designed, which covers the entire UWB frequency. Then, a T-slot is inserted in the radiating patch to have the rejection of the band containing WiMAX and WLAN (802.11/a-n). The notch characteristics of the proposed antenna are observed from 3.0 to 3.65 GHz and 4.5 to 6.65 GHz respectively. Measured peak gain of 3.28 dBi has been observed at 4.25 GHz frequency. To show the validation of antenna, mathematical analysis using circuit theory has been alsogiven in the paper. The prototype has been also tested inside the anechoic chamber to give the validation in real-time environment. Several other reported antenna structures have also the same notch band in UWB with different notching methods. The proposed structure's radiation properties are compared with other reported structures proving the compactness of the proposed structure.

On the design and analysis of a miniaturized ultra‐wideband (UWB) antenna using quatrefoil‐shaped nonuniform meta‐surfaces for body‐centric communications

“…Also, except De et al, 7 the proposed antenna offers higher bandwidth than all the antennas given in the table and higher bandwidth with dual mode operation than the previous studies 5,29,40,50 . The proposed antenna also provides better gain than previous literature 5,7–9,11–13,17,18,34,38,46,50 . Better efficiency is also achieved when compared to other studies 5,7,12,18,38,40,46 .…”

“…It is understood from Table 5 that the proposed antenna is smaller in size (length  width) than the antennas in literature 7,8,12,13,18,29,40,50 and lesser in thickness than. 5,7,9,11,13,17,18,29,34,38,40 This lesser thickness of the antenna results in reduced overall volume. Also, except De et al, 7 the proposed antenna offers higher bandwidth than all the antennas given in the table and higher bandwidth with dual mode operation than the previous studies.…”

“…It is understood from Table 5 that the proposed antenna is smaller in size (length × width) than the antennas in literature 7,8,12,13,18,29,40,50 and lesser in thickness than 5,7,9,11,13,17,18,29,34,38,40 . This lesser thickness of the antenna results in reduced overall volume.…”

“…The antenna 16 deploys CPW method to achieve UWB and completely backed with a reflector for obtaining directional pattern in the entire UWB band. An UWB antenna with rectangular patch providing notched bands characteristics is observed in Yadav et al 17 The antenna provides notched bands with lesser UWB bandwidth but good gain. Circuit theory-based analysis was done for the results in Yadav et al 17 A simple UWB monopole antenna in Kumar et al 18 provides good bandwidth and peak gain.…”

“…An UWB antenna with rectangular patch providing notched bands characteristics is observed in Yadav et al 17 The antenna provides notched bands with lesser UWB bandwidth but good gain. Circuit theory-based analysis was done for the results in Yadav et al 17 A simple UWB monopole antenna in Kumar et al 18 provides good bandwidth and peak gain. But the antenna's group delay remains high (>0.9 ns).…”