Novel Design of Compact UWB Dielectric Resonator Antenna With Dual-Band-Rejection Characteristics for WiMAX/WLAN Bands

Abstract

A novel compact dual band-notched dielectric resonator antenna (DRA) for ultrawideband (UWB) applications is proposed. Here, the bandwidth enhancement and the first band notch is realized by embedding a stub that is located to the hollow center of a U-shaped feedline simultaneously. By etching an inverted T-shaped parasitic strip at the back plane of an antenna that is surrounded by a dielectric resonator (DR), the second band rejection is created. By cutting a slot at the proper position on the ground plane, the width of the second band notch is controlled. The proposed antenna size is mm or about at 3.1 GHz. The measurement results demonstrate that the proposed DRA provides acceptable radiation performances such as an ultra-wide impedance bandwidth of around 122% with two sufficient band rejections in the frequency bands of 3.22-4.06 and 4.84-5.96 GHz, high radiation efficiency, and nearly constant gain.Index Terms-Band-notched, compact, dielectric resonator antenna (DRA), ultrawideband (UWB) antenna.

Bandwidth-Enhanced Double-Slot Tsa With Y-Shaped Corrugated Edges

“…In recent years, with the rapid development of wireless communication systems, broadband and high gain have become two important factors in the design of UWB antennas [1][2][3]. Tapered slot antenna (TSA) is one of the best antennas used in ultra-wideband technology, which was first proposed by Hines et al in 1953 [4], and it is widely used in radio astronomy, ground penetrating radar, ultrawideband communication, ultra-wideband imaging and other fields [5][6][7].…”

Design of Planar Dielectric Resonator Antenna Array at 28 GHz

“…DR has primarily been used in microwave circuits. It is made up from high permittivity ranging from 8 -100 [9][10][11][12][13]. With several attractive advantages such as exhibit low loss and can produce wide bandwidth, DR will help to maintain the antenna performance and efficiency even at millimeterwave frequency [14].…”

A wideband frequency reconfigurable rectangular dielectric resonator antenna

“…DRAs experience very low loss, therefore they ensure higher efficiency without conductor loss. Additionally, unlike dipole or microstrip antennas that suffer from narrow bandwidths, DRAs have fairly wide bandwidths [2][3].…”

“…ANTENNA CONFIGURATION AND DESIGN Fig. 1 shows the configuration of the proposed antenna, which is consist of a rectangular DR excited by the U-shaped microstrip feed line, and a Taconic substrate with dimensions of 40 × 45 × 1.5748 mm 3 . The dielectric resonator has a dielectric constant of r = 15 with thickness of h = 3 mm.…”