This paper discusses an elliptical ultrawideband (UWB) antenna and a dual-band UWB notch antenna. To achieve bandwidth, two corner cuts are etched into the rectangular slot on partial ground plane. An inverted-U-shaped conductor-shaped resonator utilized to characteristics The suggested has overall dimension of 24×32 mm2. gain 4.9 dB, bandwidth 2.5–11 GHz, linear phase response, group delay les...

A dual-band artificial magnetic material and then a dual-band double-negative metamaterial structure based on symmetric spiral resonators are presented. An approximate analytical model is used for the initial design of the proposed structures. The electromagnetic parameters of the proposed metamaterial structure retrieved using an advanced parameter retrieval method based on the causality princ...

A dual-band circularly polarized antenna is presented in this paper. A rectangular patch antenna with gap-feeding structure is firstly designed, and 3-dB axial-ratio bandwidth from 2.35 to 2.48GHz is obtained. A parasitic square ring is placed on the rear of the rectangular patch as a band-notch unit operating around 2.4 GHz. Then an original wide circularly polarized band is split into two ban...

An ultra-wideband (UWB) antenna with dual band-notched characteristics is proposed in this letter. The fabricated prototype of the has a compact size 30 × 24 mm which operates at 3 to 14 GHz and attained notch-bands 3.3 3.7 5.15 5.825 GHz. result shows that compact, easy fabricate provides good radiation patterns time-domain behaviours. simulated measured results displayed agreement over entire...

An ultra-wideband (UWB) printed monopole antenna with dual band-notched characteristics is proposed. Two spiral electromagnetic-bandgap (EBG) structures placed on the front and back side of the substrate are employed to create two notch bands at 5.2 and 5.8 GHz for the lower and upper bands of the wireless local-area network (WLAN), respectively. The notch-frequency can be tuned, and the band w...

This paper presents the design and realization of a compact size multimode frequency reconfigurable antenna. The antenna consists triangular-shaped monopole radiator, originally inspired from rectangular Slots were utilized to notch desired while PIN diodes achieve reconfigurability. can operate in wideband, dual-band, or tri-band mode depending upon state diodes. To validate simulation results...

This paper describes the comparision of a microstrip-fed monopole ultra wideband antenna with and without notch. In case of notch the notch-band characteristics is achieved by Cshaped ring resonator. The paper gives better understanding of antenna parameters such as return loss, VSWR etc., and its variation in performance of antennawith and without notch. Also presents the effect of parameters ...

This paper presents a feed-forward control scheme for rejecting stochastic narrow band disturbances. The effect of this scheme manifests itself as a tunable notch on the sensitivity transfer function frequency response, where the target frequency, width, and depth of the notch can be set by prescribed design parameters. This approach is based on employing least mean square adaptive control that...