This paper presents a novel band-notched elliptical slot antenna for Ultra Wide-Band (UWB) communication, which is printed on a dielectric substrate of RT/duroid 6006 with relative permittivity (er) of 6.0, thickness of 1.27 mm, and fed by an elliptical open ended microstrip line connected to the 50 Ω main line. This antenna is designed to be used in frequency band of 3.1–10.6 GHz. Bandnotched characteristics of antenna to reject the frequency band of 5.15–5.825GHz, which is limited by IEEE 802.11a, is realized by parasitic inverted-U strip attached to the elliptical slot plane. Effects of varying the parameters of parasitic inverted-U strip on performance of proposed antenna have been investigated. The antenna with optimal parameters obtained from parametric study is fabricated and measured. It is observed that the simulation and experimental results have good agreements with each other. 128 Fallahi, Kalteh, and Golparvar Roozbahani

/pdf/a-novel-uwb-elliptical-slot-antenna-with-band-notched-330t5wtcys.pdf

A novel uwb elliptical slot antenna with band-notched characteristics

In this paper, the design method of a quadruple-band rejection ultra-wideband (UWB) antenna with three co-directional complementary split ring resonators (CSRRs) is proposed. Within the design step, individual antennas corresponding to each rejection band is flrst designed, and then a flnalized structure is determined by assembling these individual antennas altogether. The shape of the flnal antenna achieves both the impedance matching of ultra-wideband and the respective resonances at four rejection bands. Here, the mutual coupling among the band rejection elements is minimized, and the placement of the resonators is optimized. The fabricated antenna is compact enough to be integrated into the UWB system, and also the measured results show the validity of the proposed design strategy.

/pdf/design-of-the-ultrawideband-antenna-with-a-quadruple-band-2mg2gcq2fr.pdf

Design of the Ultrawideband Antenna with a Quadruple-Band Rejection Characteristics Using a Combination of the Complementary Split Ring Resonators

In this paper, a new compact circular monopole ultra- wideband antenna with multiple narrow bands notched is proposed, which is implemented by using the existing techniques, such as loading a L-type band-stop filter, inserting a split ring resonator (SRR), and the method we proposed that connecting L branches on the radiation disk Four sharp notches at 24GHz, 35 GHz, 55 GHz, and 76 GHz are achieved separately The measured VSWR shows a good agreement with the simulation results The radiation patterns are obtained from Ansoft HFSS simulations and verified by CST Microwave Studio The results prove that this kind of antenna can be applied in the UWB communication systems to avoid interference with other wireless systems, such as the 24GHz WLAN, 35 GHz WiMax, and 58 GHz WLAN etc The parameters determining the antenna's band notched characteristic are discussed

https://www.jpier.org/PIER/pier84/19.08072801.pdf

A Compact Ultra-Wideband Microstrip Antenna with Multiple Notches

In this paper, we present a new ultra wideband antenna design with band rejection for UWB applications. A CPW-fed circular patch radiates through a circular aperture, which ensures wideband impedance matching and stable omnidirectional pattern over an UWB frequency range, from 3GHz to 10.6GHz. In order to avoid interference

/pdf/ultra-wideband-cpw-fed-aperture-antenna-with-wlan-band-3sdcwm6i18.pdf

Ultra wideband cpw-fed aperture antenna with wlan band rejection

In this paper, the design, simulation, and fabrication of a novel printed circular slot antenna with a band-notched function suitable for UWB application is presented and investigated. The band{notched characteristic is achieved and adjusted by inserting L-shaped branches into the ground plane. Experimental results show that the proposed antenna meets the requirement of wide working bandwidth of 3.1{10.6GHz with return loss < i10dB, while avoiding the interference with the 5-GHz WLAN band. The study of transfer function (amplitude of S21/group delay) and time domain characteristic (fldelity/power spectrum density (PSD)) indicate a band-notched function of the antenna. The proposed antenna has a compact size, good radiation characteristics, ultra wide band-width, and good time-domain behaviors to satisfy the requirement of the current wireless communication systems.

/pdf/study-of-a-novel-wideband-circular-slot-antenna-having-1cm3xr5vzj.pdf

Study of a novel wideband circular slot antenna having frequency band-notched function

An ultra-wideband (UWB) monopole antenna with a band-notch characteristic is presented which needs only two parameters to tune the notch frequency. The proposed monopole antenna is embedded with a crescent slot, whose length is determined by parametric study. By adjusting the slot length, the notched frequency band within the antenna's operating bandwidth can be easily controlled. Also, the time-domain behaviours are discussed and the fidelity factor is calculated.

/pdf/frequency-and-time-domain-characteristic-of-a-novel-notch-14dzkseiu6.pdf

Gholamreza R. Dadashzadeh

Papers

Frequency and Time Domain Characteristic of a Novel Notch Frequency UWB Antenna