A novel type of microstrip antenna is proposed for compact wideband wireless applications. The composed six unit cells left-handed metamaterial (LHM) and a dipole element. directly connected to three LHM cells, which are arranged in 2 times 3 array form. In this aspect, the regarded as loaded antenna. matched with stepped impedance transformer rectangular slot truncated ground plane. coupled LH resonances simultaneous excitation different sections result into broad bandwidth. has maximum...

A flexible transparent wideband four-element MIMO antenna with a connected ground plane is proposed numerical computation and experimental measurement studies. The optical transparency obtained using conductive oxide material AgHT-4 Melinex substrate. radiating elements are in the form of circular stub-loaded C-shaped resonators, which positioned carefully structured substrate an interconnected partial L-shaped resonator, attaining overall size 0.33λ × 0.48λ at lowest operating frequency....

Abstract A transparent flexible co‐planar waveguide fed patch antenna using polyethylene terephthalate substrate is presented. The wideband high gain having an overall dimension of 0.48λ × 0.64λ at the center frequency 4.28 GHz fabricated a sheet made up Silver Tin Oxide (AgHT‐8). performance proposed compared with four other nontransparent nonflexible and semitransparent antennas. For engineered design, geometry feeding mechanism are kept constant whereas materials varied. Simulations...

A dual-port transparent multiple-input multiple-output (MIMO) antenna resonating at sub-6 GHz 5G band is proposed by using patch/ground material as conductive oxide (AgHT-8) and a Plexiglas substrate. Two identical circular-shaped radiating elements fed microstrip feedline are designed the finite element method (FEM) based high-frequency structure simulator (HFSS) software. The effect of isolation mechanism discussed two cases. In case 1, horizontally positioned oriented in similar direction...

An ultrathin dual-layer flexible metamaterial absorber with triple-band for RF energy harvesting applications has been reported in this article. The sub-wavelength unit cell of the proposed is composed six distinct concentric annular having outer circumference ring and octagonal inner circumference. metallic resonators are constructed from copper foil self-adhesive tape which affixed on neoprene rubber sheet terminated by metal ground plate. prototype compact thickness less than 0.037λ0 size...

Abstract A dual‐band optically transparent antenna based on a slotted interconnected ring resonator as an efficient radiating element is proposed. The compact and partial ground plane are structured plexiglass substrate with Silver Tin Oxide conducting material. radiation disadvantage of OTAs due to the low conductivity conductive oxides has been overcome gain improvement technique 2 × 1 array design. overall sizes proposed single two antennas λ /2.5 /1.19 /2.08 at lower resonance frequency...

RF-based wireless energy harvesting (WEH) and power transfer (WPT) are gaining attention due to their capability of powering various sensors devices. A low-power device can be fed wirelessly by capturing ambient RF through a WEH system. In the case high-power device, WPT system provide required amount using intentional sources.

In this article, a 2.45-GHz band microwave sensor (MWS) design is introduced to be utilized for the dielectric constant determination of ethanol–water solutions. The MWS composed two symmetrically positioned, directly coupled interconnected split-ring resonators with circular ring-shaped detection area in middle region, into which small amount solution dropped. fabricated prototype has total component size <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML"...

This article proposes the design, fabrication and measurement of a triple-rings complementary split-ring resonator (CSRR) microwave sensor for semi-solid material detection. The CSRR was developed based on configuration with curve-feed designed together, utilizing high-frequency structure simulator (HFSS) studio. triple rings resonates at 2.5 GHz, performs in transmission mode, senses shift frequency. Six cases sample under tests (SUTs) were simulated measured. These SUTs are Air (without...

In this paper, we present the design of a compact and highly sensitive microwave sensor based on metamaterial complementary split-ring resonator (CSRR), for liquid characterization at frequencies. The consists two-port microstrip-fed rectangular patch resonating structure printed 20 × 28 mm2 Roger RO3035 substrate with thickness 0.75 mm, relative permittivity 3.5, loss tangent 0.0015. A CSRR is etched ground plane purpose miniaturization. investigated sample put in capillary glass tube lying...

This paper presents a novel frequency reconfigurable antenna design for sub-6 GHz applications, featuring unique combination of elements and control mechanisms. The is composed an outer split-ring resonator loaded with inner spiral resonator, which can be adjusted through the remote PIN diode or Single Pole Double Throw (SPDT) switches. compact antenna, measuring 22 × 16 1.6 mm3, operates in broadband, tri-band mode depending on ON/OFF states reconfigurability achieved using two BAR64−02V...

A negative refractive index material loaded patch antenna is proposed for ultra wideband applications. The operation has been achieved by creating a defected ground plane with CNC shaped split ring resonator. resonator also exhibits 90-deg electrical tilt. Two additional slots are engineered in the further bandwidth enhancement. −10 dB an order of 57.89% peak gain 5.37 dBi at 5.5 GHz resonant frequency. Measured results demonstrate good agreement simulated results.

A compact dual-band bioimplantable antenna with novel resonator geometry is designed for wireless biotelemetry applications in MICS and ISM bands.The radiating element based on an Lshaped transmission line fed anti-spiral structure, which loaded the spiral at end to increase effective electrical length.The effect of geometric parameters return loss discussed inclusion three layered lossy human model numerical calculations.The footprint size optimized 15  1.92 mm 3 , having total surface...

An engineered novel tunable dual-band metamaterial antenna based on stacked split ring resonator (SRR) array is presented. The μ-negative SRR present at two sublayers of microstrip patch substrate adds tuning capability to the with marginal trade-off between gain and cross-polarization. If size element considerably smaller than resonance wavelength, ideally lesser λ/10, would support resonating mode antenna. Compact embedded in radiator facilitate intended allocated spectrum L5- S-band...

Abstract This article proposes an electrically small, probe-fed Ultra-Wideband (UWB) monopole antenna on a slotted truncated ground plane for breast cancer detection. The physical footprint of the proposed element is 33 mm × 35 0.5 mm. designed low-cost FR4 Epoxy substrate with thickness has electrical size 0.33λ 0.35λ 0.005λ at lowest frequency operation; radiator offers impedance bandwidth 8.34 GHz, which implies fractional 115.5%. A compact dual-polarized topology two orthogonally placed...

This paper proposes a microstrip antenna with novel slot resonator for compact RF energy harvesting modules operating at 2.4 GHz. The has the overall size of λ0/3 × electrically small radiator λ0/11 λ0/15 Both measurement and simulation results show proposed to be utilized in DC power supply modern low wireless networks. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:1404–1408,

ABSTARCT In this article, a compact, metamaterial‐inspired band‐pass filter is introduced for the passband frequencies between 3.9 and 4.54 GHz with physical size of main filtering section as compact λ o /11 ×λ /14. The design operation principles are verified numerical experimental results. measured simulated results show good agreement. proposed additionally modeled lumped circuit elements equivalent model to confirm principle. This in comparison conventional stepped impedance or coupled...

This article proposes a novel rectenna design based on modified Hilbert fractal shaped microstrip antenna and Villard voltage doubler rectifying circuit for RF energy harvesting applications operating at Global System Mobile Communications (GSM) 900 MHz band. The is numerically optimized fabricated Rogers RO4003 substrate of thickness 1.52 mm with compact overall physical sizes 80 × 82 (λ0/4.16 λ0/4.06). Various geometric parameters component values the proposed system are in order to...

In this paper, a novel machine learning assisted microwave sensor is introduced for the dielectric parameter characterization of ethanol liquid samples with different ingredient concentrations. The proposed designed structural geometry two intercoupled spiral resonators on Rogers RO4003 substrate in band stop filter configuration. fabricated prototype has overall physical size 15 mm x 20 1.8 GHz frequency band. quantitative sensing performance numerically analyzed and experimentally verified...

This article introduces a novel, ultrawideband (UWB) planar monopole antenna printed on Roger RT/5880 substrate in compact size for small Internet of Things (IoT) applications. The total electrical dimensions the proposed UWB are 0.19 λo × 0.215 0.0196 with overall physical sizes 15 mm 17 1.548 at lower resonance frequency 3.8 GHz. is fed through linearly tapered microstrip line partially structured ground plane to achieve optimum impedance matching operation. has an operation bandwidth 9.53...

Antenna systems with more complicated geometries have been created as a result of evolving technology and rising performance standards in the industry. The geometric complexity modern antennas makes it difficult for circuit theory tools or parametric studies to produce adequate findings, making designers create designs they want. Even though full‐wave electromagnetic (EM) modeling are widely utilized today, computationally expensive local optimization alone. In order speed up stages...

In this paper, a dual broadband antenna is proposed for WLAN communication modules supported by the IEEE 802.11 ac/b/g/n standard. The design based on two interspaced electrically small split-ring resonators, each of which directly fed through stepped impedance microstrip line with an optimized electromagnetic coupling distance in between. band operates lower frequency from 2.3 GHz up to 3 2.65 center (26.4 % bandwidth) and higher 4.7 6 5.35 (24.3% bandwidth). radiating section...