Investigation of A Novel Dual Band‐Notched UWB Antenna by the Equivalent Circuit Model and Time Domain Characteristics

Abstract

In this article, a dual band‐notched ultrawideband (UWB) antenna is investigated by the equivalent circuit model and time domain characteristics. Transmission line model and L‐C resonant circuit model of the antenna are presented. Transfer function and pulse waveforms are also studied to evaluate the proposed antenna. Experimental results show that the proposed antenna meets the requirement of wide working bandwidth of 3.1–10.6 GHz with voltage‐standing wave ratio <2, while avoiding the interference from WiMAX and 5‐GHz wireless local area network. Radiation patterns and antenna gain study show that the stable radiation characteristics at different frequencies are obtained. The proposed antenna has a compact size, good radiation characteristics, and UWB behaviors to satisfy the requirement of the current UWB wireless communications systems. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2993–3000, 2013

A Compact Dual Band-Notched Circular Ring Printed Monopole Antenna for Super wideband Applications

“…Moreover, it is also observed that the received signal amplitude is higher when two identical antennas are placed face-to-face (200 mV) with respect to side-by-side (100 mV) orientation. Overall ringing distortion is better than the existing UWB antennas in the literature [20]. To authenticate the similarity between received pulse S 2 (t) and transmitted or excited pulse S 1 (t) of the proposed antenna, the fidelity factor is calculated which is given as follows…”

Novel dual band‐notched UWB antenna with T‐shaped slot and CSRR structure

“…An equivalent distributed element circuit can be used to study the performance of UWB antenna . In Figure (a) the T‐shape slots and the CSRRs can be seen as two series stub in a transmission line.…”

“…Thus, the radiation is very low at these two notched frequencies and dual band-notched is achieved. An equivalent distributed element circuit can be used to study the performance of UWB antenna [12][13][14]. In Figure 3(a) the T-shape slots and the CSRRs can be seen as two series stub [13] in a transmission line.…”

Design and analysis of multiband notched pitcher-shaped UWB antenna

“…Lot of techniques have been reported in the literature to achieve band notched characteristics in the range of UWB at different standard narrow bands. Some of them used half wavelength slots/slits on the main radiating patch of different shapes , open ended quarter wavelength slots/slits or stubs on main radiating element or on ground plane , parasitic elements near radiating patch or feed line , and segmented patch . Some new concepts are also mentioned which utilize metamaterial like structures and EBG structures .…”

“…The mechanism of band notched characteristics in UWB antennas can be explained using conceptual lumped RLC equivalent circuit analysis as proposed in literature . The conceptual equivalent RLC resonant circuit diagrams are based on the resonances occurred at the notched bands.…”