Novel wideband slot antenna having notch-band function for 2.4 GHz WLAN and UWB applications

Abstract

In this paper, the design, simulation, and fabrication of a novel printed rectangular slot antenna with a band-notched function suitable for 2.4 GHz wireless local area network (WLAN) and ultra-wideband (UWB) applications is presented and investigated. Two pairs of slits are introduced into the ground plane to realize band-notched function, by tuning the position, length, and width of which a suitable rejected frequency band can be obtained. To improve the impedance matching, a rectangular cut is also made in the ground plane so that the antenna can cover 2-12 GHz frequency range. According to the measured results, the proposed antenna has a large bandwidth totally satisfying the requirement of 2.4 GHz WLAN and UWB systems, while providing the required band-notch function from 5.1 to 5.9 GHz. The study of transfer function and time-domain characteristics also indicates the band-notched function of the antenna. The radiation patterns display nearly omni-directional performance and the antenna gain is stable except in the rejected frequency band (5.1-5.9 GHz). Moreover, group delays are within 1.5 ns except for the notch band. These features make it a promising candidate for UWB wireless applications. Details of this antenna are described, and the experimental results of the constructed prototype are given.

A compact ultra‐wide band planar antenna with corrugated ladder ground plane for multiple applications

“…A 5.2 GHz notched is achieved in UWB frequency range using a slot‐type split ring resonator . Bandwidth enhancement is achieved by the properly cut curved slot in the rectangular patch and by adjusting the pair of slits in the ground plane . UWB characteristics has been achieved by introducing circular disc patches in the antenna .…”

A novel FGCPW-fed flag-shaped UWB monopole antenna

“…Compact planar UWB antennas with single-and dualnotched bands have also been presented in the literature. In [12], a 5. 15-5.9 GHz band notched UWB slot antenna has been proposed.…”

“…Compact planar UWB antennas with single-and dual-notched bands have also been presented in the literature. In [12], a 5.15–5.9 GHz band notched UWB slot antenna has been proposed. A CPW-fed UWB antenna showing dual band-notched performance has been developed in [13].…”

Broadband MIMO antenna for HiperLAN/2, WLAN, and WiMAX applications with high isolation

“…Some techniques must be applied to increase the isolation between the antenna elements, such as using a defected ground plane [7], inserting a small ground plane between PIFA and the mobile circuit board [8, 9] and maintaining the distance between antenna elements, as the critical parameter affecting the mutual coupling, at least equal to a half wavelength [8–10]. Thus, other techniques to make PIFA broadband such as inserting slots [11] and a parasitic element [12] can be applied. Otherwise, these techniques as well as the use of capacitive load [13] and shaped strip [14] are used to achieve multiband performance [15–17].…”