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![Pipeline surface‐mounted tag antenna. A, Stamped antenna and B, with drone reader [Color figure can be viewed at wileyonlinelibrary.com]](publication/342017851/figure/fig1/AS:11431281176427742@1690165186269/Pipeline-surface-mounted-tag-antenna-A-Stamped-antenna-and-B-with-drone-reader-Color.png)
Pipeline surface‐mounted tag antenna. A, Stamped antenna and B, with drone reader [Color figure can be viewed at wileyonlinelibrary.com]
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The paper reports the bandwidth enhancement of a microstrip slot antenna for on‐metal RFID applications. Microstrip patch with a single conductive layer as wideband and conformal antenna is investigated. The proposed bandwidth enhancement is based on stepped‐impedance slot resonator integrated with an inset‐fed microstrip patch. Slots of different...
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The findings offer a bandwidth microstrip antenna enabling wireless technology. In its most basic form, a microstrip antenna of the patch antenna on one side of the dielectric has a flat surface but at the other end. The patches are typically made from a material like copper and can accept any amount. The primary heater is a square area. The benefi...
This work proposes a novel frequency-reconfigurable circular patch antenna incorporated with a rectangular slot and a narrow slot capable of producing constant dipole-like radiation patterns. The antenna compactness is achieved with the integration of the rectangular slot defected ground structure (DGS) on the ground. The proposed antenna is able t...
Citations
... Step-impedance resonators (SIRs) have been reported being employed in antenna designs for UWB frequency response [14], realizing dual-band/tri-band/broadband operations [15,16], and for antenna bandwidth enhancement [17]. ...
... As compared with the uniform impedance resonator (UIR), the SIR has demonstrated superior control over the spurious response. A symmetrical SIR slot-shaped element was employed to boost the impedance bandwidth for a newly designed antenna [17]. This antenna has been based on a microstrip patch with a single conductive layer as a wideband and conformal antenna. ...
... With the intention of analyzing the SIRs, the equivalent lumped element circuit of SIR at a resonant frequency is depicted in Figure 4 [17]. In this paper, a stair-step outline based on symmetrical and asymmetrical SIRs has been adopted to construct the first antenna. ...
In this study, two new printed slot antennas have been simulated and fabricated using a single layer of FR4 substrate for modern wireless applications. The first printed slot antenna with etched stair-step topology in the ground plane is proposed to achieve the single-band operation. This topology is based on two components of asymmetrical step-impedance resonator (SIR) and one component of symmetrical SIR. The first designed printed slot antenna satisfies the requirements of WLAN applications at 5.75 GHz. The second printed slot antenna is a developed version of the first one with one inserted component of symmetrical SIR and one asymmetrical SIR component to be operated as a multiband antenna applicable for WiMAX, WLAN, and X-band downlink satellite systems at 3.5, 5.75, and 7.75 GHz, respectively. The proposed antennas have small sizes, and competitive electrical specifications than many reported SIR and non-SIR antennas in the literature.
... The array of sensors is serially connected to two linearly polarized conformal and wideband antennae [36]. The bandwidth must be sufficient enough to accommodate the sensors' resonance (and make additional allowance for responses upon exposure) variance [54,55]. The antennae are connected to the sensors at both extreme ends and arranged orthogonally to each other to mitigate crosstalk. ...
... The array of sensors is serially connected to two linearly polarized conformal and wideband antennae [36]. The bandwidth must be sufficient enough to accommodate the sensors' resonance (and make additional allowance for responses upon exposure) variance [54,55]. The antennae are connected to the sensors at both extreme ends and arranged orthogonally to each other to mitigate crosstalk. ...
A non-recovery moisture sensor (NMS) based on a planar-microwave resonator for breach integrity is presented. The NMS consists of a microwave ring transducer (MRT), a non-recovery hydrophilic film, and expected to be patterned in the infrastructures transporting the target content. Though PVA and PANI are organic polymers with switchable conductivity, they are incapable of withholding water indefinitely. As PVA conductivity permits switching between p-, n-type semiconductor states, and insulator; a certain concentration of PANI is infused. Because PANI exhibits an extra proton from an acid attached to the nitrogen group, the non-recovery change occurs as it accepts hydronium ions from water, and changes to a more conductive form. The concentration of the acidity results in the degree of permittivity variance. The MRT is configured to see the permittivity variance and convert it into electrical quantities.
Microstrip antennas are a class of planar antennas which have been researched and developed extensively in the last four decades. Due to their numerous advantages such as simple design, possible compact design, and lower cost, microstrip antennas are widely used in different fields of science and technology. As the size of these antennas directly depends on its resonance frequency wavelength, microstrip antenna is a popular choice for ultrahigh-frequency applications. In this chapter, a brief overview on microstrip antenna and its performance and design parameters is provided. A state-of-the-art literature review is also included to have an overall idea of the recent developments in this area and what to expect in the future.
