Ultra-Wideband Small Square Monopole Antenna With Variable Frequency Band-Notch Function

Abstract

In this paper, a novel printed monopole antenna for ultra wideband applications with variable frequency band-notch characteristic is presented. The proposed antenna consists of a stepped square radiating patch with modified W-shaped slot and a ground plane with rectangular sleeve and pair of L-shaped resonator which provides a wide usable fractional bandwidth of more than 130% (3.05-14.3 GHz). By cutting a modified W-shaped slot with variable dimensions on the radiating patch frequency band-stop performance is generated and we can control its characteristics such as band-notch frequency and its bandwidth. The designed antenna has a small size of 12 × 18 mm 2 while showing the band rejection performance in the frequency band of 5.08 to 5.91 GHz.

Band‐notched low profile monopole antenna with enhanced bandwidth by using an inverted T‐shaped parasitic structure and a pair of G‐shaped slots

“…The frequency range for UWB systems between 3.1 and 10.6 GHz will cause interference to the existing wireless communication systems, for example, the wireless local area network (WLAN) for IEEE 802.11a operating in 5.15–5.35 GHz and 5.725–5.825 GHz bands, so the UWB antenna with a band‐stop performance is required. Recently, to generate the frequency band‐notch function, modified planar monopoles have been recently proposed [5–9]. In Refs.…”

“…In Refs. 5–7, different shapes of the slots (i.e., square ring with a pair of T‐shaped strips protruded inside it, W‐shaped and folded trapezoid) are used to obtain the desired band notched characteristics. Single and multiple [8] half‐wavelength U‐shaped slots are embedded in the radiation patch to generate the single and multiple band‐notched functions, respectively.…”

A Compact Uwb Antenna With Dual Band Rejection

“…In a recent publication [8], Yazdanifard et al have demonstrated a new stepped square monopole antenna with W shaped slot and a ground plane with rectangular sleeves and a pair of L-shaped resonator for an ultra wide bandwidth of 130% . In yet another recent publication [9], a square monopole antenna is presented with a pair of T-shaped slot and a ground plane with a pair of rectangular sleeves and T-shaped resonator to provide an ultra wide fractional bandwidth of more than 125% (3.05-13.57 GHz).…”

“…A few good examples of UWB antennas may also be found in [11][12][13][14][15]. However, most of the recently reported papers give the simulated and experimental results of frequency domain characteristics of the UWB/band notched UWB antenna like return loss, VSWR, gain, radiation pattern in E plane and H plane [8][9][10][11][12][13][14][15]. In order to completely characterize a UWB antenna, time domain characteristics are also important like impulse response, signal fidelity etc.…”

Enhanced bandwidth small E‐Shaped monopole antenna for UWB applications with variable frequency band‐notch function

“…Recently, to generate the frequency band-notch function, modified planar monopoles with T-shaped conductor-backed plane [9], U-shaped slots [10], W-shaped slot, and small strip bar [11] are used.…”