Multiband-Notched UWB Antenna Using Folded Slots in the Feeding Structure (original) (raw)

Planar Ultrawideband Monopole Antenna with Tri-Notch Band Characteristics

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 modi¯ed 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{3.7GHz) and WLAN band (5.15{5.875GHz). In order to realize notch band at X-band downlink satellite communication band (7.1{7.76GHz) 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 10.9GHz having return loss less than 10dB 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 e®ects 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 £ 25mm 2 .

A Compact UWB Printed Monopole Antenna with Triple-Band Notched Characteristics

2015

─ A compact triple band-notched printed monopole antenna for ultra-wideband (UWB) application is presented. By inserting two triangular-shaped notches in both sides of the ground plane of microstrip feed line, additional resonances are excited and the bandwidth is increased up to 160%. Three sharp notched frequency bands at 3.8 GHz, 5.5 GHz, and 7.5 GHz are achieved by embedding a pair of rectangularshaped slits in the ground plane and two pairs of modified bow-shaped slits in the patch. This novel monopole antenna has ultra-wide frequency bandwidth for input impedance, compact size (24 mm × 20 mm), low cost fabrication and Omnidirectional H-plane radiation pattern which makes it suitable for ultra-wideband applications. The measured results reveal that the presented triple band-notched monopole antenna is a promising candidate for UWB communication systems to avoid interference with WiMax band (3.3-3.7 GHz), some C-band (3.7-4.2 GHz), WLAN (5.155.825 GHz) bands and some C-band sate...

A compact UWB monopole antenna with penta band notched characteristics

TELKOMNIKA Telecommunication Computing Electronics and Control, 2020

A modified rectangular monopole ultra-wideband (UWB) antenna with penta notched frequency bands is presented. An inverted U shaped and slanted U-shaped on the radiating patch are inserted to achieve WiMAX and ARN bands rejection respectively, two mirrored summation Σ-shaped and four mirrored 5-shaped slots are inserted on the partial ground to achieve WLAN and X-band bands rejection respectively, finally rectangular shaped slot with partially open on the feed is inserted to achieve ITU-8 band rejection. The proposed antenna which was simulated has a compact size 30×35×1.6 m3. It is operated with impedance bandwidth 2.8-10.6 GHz at |S11| < −10 dB, that supported UWB bandwidth with filtering the five narrowbands that avoid the possible interference with them. The simulated resonant frequency for notched filters received 3.55, 4.55, 5.53, 7.45, 8.16 GHZ, for WiMAX, ARN, WLAN, X-Band, ITU-8 respectively. The proposed antenna is suitable for wireless communication such as mobile communication and internet of everything (IoE). Throughout this paper, CST-EM software package was used for the design implementation. Surface current distributions for all notched filters were investigated and shown that it is concentrated around the feeding point and the inserted notched slots proving that there is no radiation to the space due to maximum stored electromagnetic energy around each investigated notch slot, proving that the slots play a role of a quarter wavelength transformer which generates for each notched band, maximum gain, and radiation pattern are also investigated.

Design of a Triple Band-notched UWB Planar Monopole Antenna

Journal of Microwaves, Optoelectronics and Electromagnetic Applications, 2015

In this paper, a novel design of a compact planar ultra wide band (UWB) monopole antenna with triple band notched characteristics has been presented. The antenna has a unique shape and has been fed through a 50 Ω microstrip feedline. The strength of the antenna lies in three band notched properties for WiMax system at 3.3-3.7 GHz, WLAN IEEE 802.11a at 5.15-5.85 GHz and X band satellite communication at 7.25-8.395 GHz. The notched bands have been achieved by incorporating an inverted Uslot etched on the radiator patch, an inverted C-slot also on the radiator patch and a U-slot on the microstrip feed line. In order to achieve FCC defined impedance bandwidth of 7.5 GHz, a rectangular cut in the ground plane has been introduced along with staircase structure in the bottom edge of the radiator. The proposed antenna is having a compact size of 30 X 30 X 1.6 mm 3 and exhibits a large bandwidth from 2.8 GHz to 10.7 GHz. The antenna has been successfully simulated and fabricated. The radiation pattern is omni-directional in H-plane and the E-plane exhibits dipole like radiation pattern. The gain of the antenna is stable across the whole operating frequency band except at three notched bands.

Planar UWB monopole antenna with dual band-notched characteristics for UWB applications

Microwave and Optical Technology Letters, 2012

A simple and compact circular ultra-wideband (UWB) planar monopole antenna with dual band-notched characteristics is presented. By inserting a pair of two slots in the ground plane as well as adding a pair of arc-shaped parasitic strips around the radiating element, two notched frequency bands in the WiMAX/WLAN are achieved. Experimental results show a VSWR<2 bandwidth of 7.6 GHz for nondefected antenna and two highly rejected bands in the frequency region of 3.3-3.7GHz and 5-6GHz. V

A TRIPLE BAND-NOTCHED PLANAR MONOPOLE ANTENNA FOR ULTRAWIDE BAND APPLICATIONS

This article presents the compact planar antenna with 3.5/5.5/8.2 GHz triple band-notched characteristics. The antenna consists of an octagon shape patch with 50 X transmission line. By etching two C-shaped slots in the patch and adding pair of L-shaped resonator coupled to the radiating patch, band-rejected filtering properties in the WiMAX/WLAN/ITU bands are achieved. The proposed ultrawide band (UWB) antenna is optimized to operate in the frequency band from 3 to 11 GHz for VSWR < 2. Measured results confirm that the antenna is suitable for UWB applications because of its compact size and high performance.

Band-notched ultra-wideband circular-disk monopole antenna with an arc-shaped slot

Microwave and Optical Technology Letters, 2005

By embedding a simple arc-shaped slot in a circulardisk monopole antenna, an ultra-wideband (UWB, 3.1-10.6 GHz) operation with a controlled notched frequency band can be obtained. The arc-shaped slot is placed close to the boundary of the circulardisk monopole and has a length of about one-half wavelength of the desired notched frequency. The proposed slotted circular-disk monopole antenna showing UWB operation with a notched frequency band for rejecting the 5.8-GHz WLAN band is demonstrated. The effects of the dimensions of the arc-shaped slot on the notched frequency band are also analyzed.

Novel modified monopole antenna with band-notch characteristic for UWB application

IEICE Electronics Express, 2010

A novel modified printed monopole antenna with variable frequency band-notch characteristic for ultra-wideband (UWB) applications is presented. The proposed antenna consists of a truncated ground plane and a radiating patch with two tapered steps. To generate a notch band at 5-6 GHz with good level of band-notch a new T-shaped parasitic element placed on the back layer of the substrate along with a simple circular slot etched on the patch is implemented. The proposed antenna has a compact size of 14 × 20 mm 2 , a measured impedance bandwidth of 3.05 to 14.7 GHz for VSWR < 2 and exhibits an omni-directional H-plane radiation pattern throughout the UWB frequency range.

A Band-notched Ultra-wideband Compact Planar Monopole Antenna With U-shaped Parasitic Element

Procedia Computer Science, 2016

In this paper, we propose a compact ultra-wideband (UWB) planar monopole antenna with integrated band-notch filtering. The proposed antenna is composed of a rectangular radiating patch, partial ground plane and U-shaped parasitic element on the bottom plane of the antenna symmetrical to the radiating patch. The dimensions of parasitic element have been optimized to achieve band-notch filtering, in order to avoid IEEE 802.11a interference in the frequency range 5.15 to 5.825 GHz. The proposed antenna is compact (19x16x1.6 mm) and also achieves VSWR ≤ 2 for frequency ranging from 3 to 10.3 GHz except for the band-notched frequency. High Frequency Structure Simulator has been used to simulate the proposed antenna and analyze its performance in terms of resonating frequency, VSWR, gain and radiation pattern. Dominant factors affecting the centre frequency and bandwidth of the notched-band are also investigated.