Synthesis and design of a wideband reconfigurable filtering slot antenna (FSA) is presented in this letter. This achieved by using an open/short-ended interdigital E-shaped resonator through two integrated PIN diodes within its structure. A rectangular with M-shaped radiating stub excited the via inset coupling The also performs filter last stage, structure can be acted as admittance inverter. circuit model analyzed, synthesis process discussed curves formulation. FSA designed at center...

An offset quad-element, two-port, high-gain, and multiband multiple-input multiple-output (MIMO) planar antenna based on a log-periodic dipole array (LPDA) for Ku/K-band wireless communications is proposed, in this paper. A single element has been designed starting from Carrel's theory then optimized with 50-Ω microstrip feed-line two orthogonal branches that results mainly broadside radiation pattern improves diversity parameters. For experimental confirmation, the structure printed an...

This paper proposes a reconfigurable multiband extended U-slot antenna with polarization diversity for wireless applications. The is able to switch among linear (LP) and left-hand (LH) right-hand (RH) circular polarizations (CPs) 2.4-/5.8-GHz local area network (WLAN) systems. composed of an patch modified ground plane two p-i-n diodes the slots at ON- OFF-states. are appropriately positioned change length slot arms, which alters antenna's frequency operate in four states. simulated measured...

ABSTRACT This article presents a very compact coplanar waveguide‐fed planar monopole antenna for ultrawideband (UWB) applications. The consists of palmate leaf‐shaped radiator with modified shaped ground plane on the same side substrate. measured impedance bandwidth proposed is from 3.08 to over 14 GHz ratio about 4.6:1 VSWR ≤ 2. Experimental results show that has stably omnidirectional H‐plane radiation patterns low cross‐polarization level and average peak gain 3 dBi across UWB. dimensions...

This paper introduces a wideband rectenna that can scavenge ambient wireless power to range of frequency band from 0.91 GHz 2.55 efficiently. The proposed is based on 2 × fractal monopole antenna array with omnidirectional radiation patterns and high gains 5 8.3 dBi at the desired bands. An improved two-branch impedance matching technique presented which designed enhance rectifier circuit performance relatively low input ranging −25 dBm 10 dBm. Also, full-wave suitably improve RF-to-DC...

A reconfigurable filtering slot antenna (filtesnna) for Wi‐Fi/LTE mobile systems is proposed. The filtesnna based on integrating a switchable bandpass filter inside the feeding line of structure. This design achieved by using an open/short‐ended inter‐digital E‐shaped patch via two integrated pin diodes within its proposed has small size 0.25λ 0 × 0.1λ (λ free‐space wavelength at 2.1 GHz). designed centre frequencies 2.1/2.4 GHz with measured 10 dB return loss impedance bandwidths from 2.03...

In this paper, a parametric study of conventional Uniplanar Compact Photonic Band Gap (UC-PBG) structures, with different dimensions, is investigated. The studied structure operates as an Artificial Magnetic Conductor (AMC) in which the performance mainly characterized by resonant frequency and bandwidth. Simulation numerical analysis have been carried out using CST Microwave Studio software, based on Finite Difference Time Domain (FDTD), Ansoft HFSS Element Method (FEM). Results show that...

In this paper, an ultra-wideband (UWB) planar monopole antenna with impedance bandwidth from 2.83 to 11.56 GHz and dual band-notched characteristics is presented. The consists of a small rectangular ground plane, bat-shaped radiating patch, 50- Ω microstrip line. notched bands are realized by introducing two different types structures. half-wavelength spiral-slots etched on the patch obtain band in 5.15 5.925 for WLAN, HIPERLAN, DSRC systems. Based single UWB antenna, second etching folded...

In this paper, a switchable antenna with capability to operate in ultrawideband (UWB) frequency from 3 10.7 GHz two notch bands of 3.3–3.7 and 3.7–4.2 GHz, is presented for cognitive radio (CR) multiband orthogonal frequency-division multiplexing (MB-OFDM) applications. The proposed has simple structure compact size 17 × 24 mm 2 . the UWB characteristics obtained using circular radiator patch an embedded T-slot on rectangular parasitic element that attached patch. reconfigurability also...

This paper presents a reconfigurable loop antenna with monopole-fed using embedded RF PIN based switches and shorted parasitic elements for GPS applications.The can independently reconfigure multiple polarizations switchable radiation pattern.Four switched metallic patches are used as to provide reconfiguration capability acting driven loop.The edge of the is by posts.The connected/disconnected switching, therewith changing configuration monopole, turn changes in current distribution over...

A novel planar switchable antenna with a band-notched and multi-resonance performance is proposed. In order to generate single characteristics, parasitic element attaching two stubs applied. Furthermore, achieve function, only one PIN diode used across semicircular radiator patch the element. When biased forwardly, transforms circular patch, an additional resonance excited at notch frequency. Additionally, by L- T-shaped cutting rectangular slit on radiating new resonances are excited, hence...

Abstract This manuscript presents a rectenna with high impedance asymmetric antenna array for ambient wireless energy harvesting at the 2.45 GHz frequency band. It is fulfilled without using any matching networks, which demonstrations significant benefits over available rectennas as function of layout and cost wide range input power level load impedance. A prototype has been designed, fabricated, tested. The configuration etched on single layer, commercial, low‐cost FR4 substrate. Simulation...

This paper introduces a wideband circularly polarized rectenna that can harvest efficiently ambient wireless power with bandwidth from 1.7 to 2.6 GHz in both wide operating and output load ranges. The is based on high gain slot microstip receiving antenna array rectifier branch-line coupler appropriately improve the RF-dc conversion efficiency at level input range, working frequency impedance range. circular polarization obtained using by corner perturbation square radiation patch has for...

A microstrip antenna with reconfigurable Dumbbell-shaped defected ground plane (DGS) is designed and simulated. In the proposed structure, in order to generate frequency diversity at 1.8GHz 1.9GHz, a DGS p-i-n diode etched on plane. The simulated results by HFSS CST softwares show effectiveness of configuration.

In this paper, multi-reconfiguration capabilities of a planar monopole antenna with two switchable capacitively loaded loops (CLLs), as near field resonant parasitic elements, are introduced.The idea is to apply the CLLs not only minimize dimensions antenna, but also present multiple resonances, which can be satisfactorily chosen by applying switches placed across six gaps CLLs.By changing switched states, it feasible obtain different reconfigurations such frequency agility (from 1.5 2.9...

This paper presents an ultrawideband (UWB) antenna with switchable band-notch for cognitive radio applications. The proposed has a simple structure and compact size of 18 × mm2. designed consists rectangular radiation patch rectangular-shaped element (p) etched on it. Also two parasitic elements (g1, g2) are embedded the ground plane that is very critical to achieve in wireless local-area network (WLAN) band. One ideal switch (SW) inserted between plane. function can be changed by tuning...

In this paper, a reconfigurable antenna with capability to operate in the ultrawideband (UWB) mode from 2.85 14.4 GHz switchable notch bands of 3. GHz, is presented.The proposed has simple configuration and compact size 17 × 14 mm 2 .To make band-notches, three methods (methods slot antenna, parasitic patches backplane structure) are used.To achieve reconfigurability, PIN diodes placed on antenna.A diode inserted over L-shaped element rectangular patch, another one between two elements...

A novel frequency reconfigurable slot antenna for suitable switchable radiations at WLAN and a tri-band Bluetooth, WiMAX upper applications is designed fabricated.Switchable responses are achieved by implementation of PIN diode within the ground plane.The structure consists square radiation patch with an E-shaped slot, modified plane inverted T-shaped strip that acts as parasitic stub two parallel slots protruded which connected to diode.The presented has compact size 20 × mm 2 while...