Planar Ultrawideband Monopole Antenna With Tri-Notch Band Characteristics

Abstract

Abstract-In this article, a compact ultra-wideband (UWB) planar monopole antenna with the triple notched band is proposed. The antenna consists of a semicircular radiating patch and a modified ground plane with two bevels at upper edge. By etching two round shape slots in radiating patch the notch characteristics are achieved at WiMax band (3.3-3.7 GHz) and WLAN band (5.15-5.875 GHz). In order to realize notch band at X-band downlink satellite communication band (7.1-7.76 GHz) a pair of rotated V-shape slot are etched on the ground plane. The measured operating impedance bandwidth of proposed antenna ranges from 2.9 to 10.9 GHz having return loss less than 10 dB with triple notched bands. The proposed antenna exhibits a nearly omnidirectional radiation pattern in the H-plane, and a dipole-like radiation pattern in the E-plane for the ultra-wideband. The effects of each individual slot on band-notch characteristics are also investigated. The measured gain of the proposed triple band notched antenna is relatively stable across the operating frequency band except notched bands and thereby making the proposed antenna suitable for practical UWB applications. Proposed antenna has a compact size of 27 × 25 mm 2 .

Compact printed high rejection triple band-notch UWB antenna with multiple wireless applications

“…Furthermore, by incorporating an inverted U-slot and an inverted C-slot etched on radiating patch with a U-slot on the microstrip feed line are responsible for tri-band notch characteristics (3.3-3.8, 5.15-5.825, 7.1-7.9 GHz) [30]. Moreover, tri-notch band characteristics is also obtained on semicircular radiating patch and a modified ground plane with two bevels at upper edge by etching two round shape slots in radiating patch and pair of rotated V-shaped slot in ground plane [31]. Uniform omni-directional patterns and stable linear polarizations can be developed by introducing a ground-cooperative radiating structure (GCRS) into the metal ground of a prototype defected hexagonal monopole antenna (HMA) [32].…”

Very Small Dual Band-Notched Rectangular Slot Antenna With Enhanced Impedance Bandwidth

“…In this regard, different strategies with band notched properties have been recently investigated. One general technique is to apply various shaped slots on the radiating patch and ground plane [16][17][18][19][20][21]. Other main methods employ parasitic strips [22][23][24][25][26] and hybrid methods that apply a combination of the mentioned techniques [27].…”

Printed Ultrawideband Monopole Antenna with Four Notch Band

“…By using these techniques, many antennas were designed with a single notched band [6][7][8], dual notched bands [9,10], triple notched bands [11][12][13][14][15][16][17] and four notched bands [18,19]. In case of designing four notched band, it is challenging to control the position of each notched band.…”