STUDY OF ELLPITICAL SLOT UWB ANTENNAS WITH A 5.0--6.0 GHz BAND-NOTCH CAPABILITY

Abstract

Abstract-Two microstrip fed ultra-wideband (UWB) antennas with different band rejection techniques are presented in this paper. The designed antennas consist of a defected ground plane with an elliptical slot and two different radiator shapes. The first design is composed of a half circular ring radiator element while the second one uses a crescent shaped radiator. The radiators are fed by a 50 Ω microstrip line with a tapered microstrip transition to ensure good impedance matching. The calculated impedance bandwidth of the proposed antenna ranges from 3 GHz to 14 GHz with relatively stable radiation patterns. To achieve band-notch characteristic in the 5.0-6.0 GHz WLAN frequency band, two different techniques have been implemented. The first technique uses a C-shaped slot etched in the ground plane while the other one uses another C-shaped slot in the feed line.

Design of half elliptical ring monopole antennas with elliptical slot in ground plane for future UWB applications

“…The proposed antenna is considered a good candidate for UWB applications. [2][3][4][5][6][7][8][9][10]. However, there are several narrowband communication systems operating below 10 GHz such as wireless local area network (WLAN) systems operating at 5.15À5.825-GHz frequency band that may cause interference with the working UWB systems.…”

A Tri-Band-Notched Uwb Planar Monopole Antenna Using DGS and Semi Arc-Shaped Slot for Wimax/Wlan/X-Band Rejection

“…The proposed antenna shows good notched band, compact size, and good gain characteristics at the notched frequency. [5] 26 × 30 × 1.6 UWB with dual band-notched 2.5-3.7 [6] 25 × 26 × 1 UWB with single band-notched 3-4 [9] 35 × 35 × 1.6 UWB with triple band-notched 2-3.5 [11] 22 × 22 × 1 UWB with single band-notched 2.5-4 [12] 32 × 35 × 1 UWB with dual band-notched 2.5-6 [13] 40 × 40 × 1.6 UWB with dual band-notched Not defined [15] 19 × 38 × 1.5 UWB with single band-notched 3-5 [20] 22 × 24 × 1.6 UWB with dual band-notched 2-3.5…”

“…Various UWB antenna structures with band rejected characteristics have been developed, e.g., a planar UWB monopole antenna with triple band-notched characteristics based on a hook-shaped defected ground structure (DGS) and semi-octagon-shaped resonant ring of the antenna [4], π-shaped slot [14], elliptical slot UWB antenna with a half circular ring radiator element [15], a tri-notched band antenna by etching two semicircular round shape slots in radiating patch, and a pair of rotated V-shape slots are etched on the ground plane [16], parasitic strips [17], and arc-shaped parasitic strips or slots and slits for single or dual band-notched characteristics [12,13,18,20]. Other resonator forms, such as elliptic single complementary split-ring resonators and rectangular split-ring resonators etched in microstrip-fed UWB antenna [9,10], open-looped resonator structure etched in a UWB antenna [5], folded strips, T-shaped stubs, capacitive-load strips [6,11], and dual band-notch UWB antenna with single tri-arm resonator [22], have been applied for band-notching purposes.…”

A compact printed triangular monopole antenna for ultrawideband applications

“…In this communication, a novel printed triangular monopole antenna (PTMA) with enhanced bandwidth is proposed for UWB applications. The proposed antenna structure has wide bandwidth and is small in size compared to the antenna dimensions reported in . The impedance bandwidth of the proposed triangular monopole antenna is greatly improved by introducing a transition between the microstrip feed line and the printed triangular patch with the round‐corner ground plane.…”

“…Oraizi and Hedayati carried out a combination of GiusepePeano and Sierpinski Carpet fractals shaped for wideband impedance matching. As is well known, UWB antennas with various shapes such as cone shaped , triangular shaped , circular shaped , fork shaped , elliptical shaped , and inverted‐F shaped were reported in literature. However, small size and wide bandwidth is essentially required for UWB applications.…”