A planar UWB antenna with signal rejection capability in the 4-6 GHz band

Abstract

The design of a compact planar antenna featuring ultra wideband performance and simultaneous signal rejection in the 4-6 GHz band, assigned for IEEE802.11a and HIPERLAN/2, is presented. The design is demonstrated assuming RT6010LM substrate with a relative dielectric constant of 10.2 and thickness of 0.64 mm. The presented results show that the designed antenna of 27 mm 20 mm dimensions has a bandwidth from 2.7 GHz to more than 10 GHz excluding the rejection band. The antenna features near omnidirectional characteristics and good radiation efficiency. Index Terms-Planar antenna, slot antenna, ultra wideband (UWB) antenna.

Low-Profile Directional Ultra-Wideband Antenna for See-Through-Wall Imaging Applications

“…This antenna is denoted as reference antenna 1. The optimal value of s should not be larger than the thickness of the substrate h [31]. The Duroid5880 substrate with dielectric constant of 2.2 and thickness of 1.575 mm is used in this project.…”

“…The frequency band of the designed UWB antenna is from 4.2 GHz to 8.5 GHz which covers the UWB band of OfCom, UK. The slot aperture depends on the lowest frequency of operation (f 1 = 4.2 GHz) approximately [31]:…”

“…In [26], a directional UWB array has been realized by using four pairs of leaf-shaped bowtie elements and a flat aluminium plate as a reflector. Recently, various planar monopoles have been reported [27][28][29][30][31]. In [32], a compact UWB UHF array antenna has been developed for through wall radar by using the printed elliptical monopole antenna.…”

Ultra Wideband CPW-Fed Aperture Antenna With Wlan Band Rejection

“…The antenna dimensions, defined in Table 1, are set in order to meet frequency bandwidth requirements. Considering a substrate of permittivity ε r , and thickness h, one can derive a preliminary value of aperture radius with respect to the following equations [2,20] Figure 1. Antenna layout.…”

“…One approach is to perturb the radiating element shape [9][10][11]. Other approaches suggest including stubs [12], slots [13][14][15][16][17][18][19][20], or SRR resonators [21][22][23] to the radiating element. Lee et al [24] have chosen to perturb matching impedance and create an open circuit at the undesired frequency.…”