A dual-band antenna for off- and on-body communications in the 2.45- 5.8-GHz Industrial, Scientific, Medical bands is presented. The two radiation characteristics, i.e., patch-like off-body link monopole-like link, are achieved by utilizing inherently generated TM <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">11</sub> xmlns:xlink="http://www.w3.org/1999/xlink">02</sub> modes of a circular patch antenna. shorting pin arc-shaped slots employed...

A new flexible ultrawideband (UWB) antenna is presented for wearable applications in the 3.7-10.3 GHz band, which highly tolerant to human body loading and physical deformation. The exhibits a footprint of 80 mm × 67 based on simple microstrip structure with two modified arc-shaped patches as main radiator. full ground plane maintained opposite side substrate suppress from underlying biological tissues back radiation directed toward body. For enhanced flexibility robustness, proposed...

The market for wearable electronic devices is experiencing significant growth and increasing potential the future. Researchers worldwide are actively working to improve these devices, particularly in developing electronics with balanced functionality wearability commercialization. Electrospinning, a technology that creates nano/microfiber-based membranes high surface area, porosity, favorable mechanical properties human vitro vivo applications using broad range of materials, proving be...

A new approach to realize robust, flexible, and electronically tunable wearable antennas is presented. Conductive fabric used form the conducting parts of antenna on a polydimethylsiloxane (PDMS) substrate. Then lumped (active passive) elements, required for electronic tuning RF choking, are fully encapsulated with additional layers PDMS. As concept demonstration, frequency-reconfigurable has been designed fabricated. The details prototype manufacturing process described. Two UWB human...

The paper presents the design and fabrication of a low-cost easy-to-fabricate laser-induced graphene sensor together with its implementation for multi-sensing applications. Laser-irradiation commercial polymer film was applied photo-thermal generation graphene. patterned in an interdigitated shape transferred onto Kapton sticky tape to form electrodes capacitive sensor. functionality validated by employing them electrochemical strain-sensing scenarios. Impedance spectroscopy investigate...

A simple conformal ultrawideband (UWB) antenna with monopole-like radiation patterns is proposed in this communication. To achieve the wide bandwidth, two rings are arranged concentrically around main annular-ring circular patch antenna, which rectangular slots added. The has generated by combining four propagation modes of TM <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">01</sub> , xmlns:xlink="http://www.w3.org/1999/xlink">02</sub>...

In this paper, a novel tunable graphene-based bandstop filter/antenna-sensor is presented. This structure an integrated module that can be used to combine filtering and high-gain radiation performance. The initial design of the unit cell consists four U-shaped stubs loaded, resembling arms ring sensing layer in substrate. reflection transmission spectra are obtained for various graphene's chemical potentials refractive index (Ns) range 1.3–1.6 THz. proposed exhibits attributes both dual-band...

In this paper, we present a new approach to realize flexible transparent strain sensors. It combines the use of conductive fabric with polydimethylsiloxane (PDMS) through simple and straightforward layer-by-layer assembly process. The is used electrodes while PDMS utilized as both substrate encapsulation layers. As concept demonstration, an interdigital capacitive sensor designed fabricated using proposed approach. then characterized in terms its transparency electro-mechanical nature. This...

We present our study on polydimethylsiloxane (PDMS)-embedded conductive fabric, which we propose as a simple yet effective solution to the challenging issue of poor PDMS-metal adhesion, allowing for relatively easy realization robust flexible antennas wearable applications. The method combines use fabric radiator with PDMS, acts substrate and protective encapsulation simultaneously. For first time, holistic mechanical electrical properties proposed combination materials is presented...

In this paper, a detailed investigation of the realization conformal wearable transparent antennas by integrating conductive mesh with polymer has been presented. The proposed method is much simpler and more cost-effective than existing methods antennas, prototype fabricated from selected composite materials flexible robust in bending operations other antennas. mechanical, electrical, optical characteristics material have investigated to analyze its suitability for antenna realization. For...

Reconfigurable antennas have gained tremendous interest owing to their multifunctional capabilities while adhering minimalistic space requirements in ever-shrinking electronics platforms and devices. A stark increase demand for flexible conformal modern emerging unobtrusive space-limited electronic systems has led the development of reconfigurable era. Flexible rely on non-conventional materials realization approaches, thus, despite mature knowledge available rigid antennas, conventional...

A conformal antenna with electronically tuning capability of its radiation pattern between broadside and monopole-like patterns is proposed. The based on a proximity-fed circular patch, loaded ring patch four rectangular slots. design planar without any use rigid shorting posts or complex feeding network. reconfigurability achieved by activating deactivating the slots using p-i-n diodes to switch TM <sub xmlns:mml="http://www.w3.org/1998/Math/MathML"...

Optically transparent electronic devices have attracted enormous interests in recent years. The development of electronics emerges a lot new industrial applications variety fields, such as displays, glasses, solar panels, satellite communications, terrestrial integrated circuits, and sensors where optical transparency is required for unobtrusive placement on the surface. Over last couple years, there been notable advancements wireless due to emerge materials fabrication technologies. Among...

A novel design of boresight and conical pattern reconfigurable antenna with the capability 360° polarization scanning is presented in this paper. At mode, produces a continuously over azimuth plane, which provides adaptive-polarization reception between transmitter receiver. The analyzed terms electric field an explanation generation TM11 TM02 resonant modes, innovative method designing antennas for WLAN applications. proposed validated by good agreement simulation experimental results...

In this letter, we present experimental investigations on washing durability of a polydimethylsiloxane (PDMS)-conductive fabric composite to validate its applicability for the realization flexible wearable antennas that can withstand multiple cycles. For purpose, designed an ultrahigh-frequency (UHF) radio frequency identification (RFID) passive tag antenna and fabricated several prototypes using such materials combination. Understanding challenge having robust integration lumped electronic...

A conformal, planar, and low-profile ultrawideband antenna with monopole-like radiation band-notched characteristics is presented. circular patch shorted to the ground combined two rectangular slots concentric rings, achieve an ultrawide bandwidth from 3.8 8.3 GHz a single rejection band 5 6 GHz. The features, generated by combining TM <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">01</sub> xmlns:xlink="http://www.w3.org/1999/xlink">02</sub>...

A method to realize low-cost, optically transparent, flexible, and unidirectional antennas is presented in this article. The key the making a flexible transparent reflector made using new method-injection of pure water into cavity that out polydimethylsiloxane (PDMS) polymer integrating with dipole conducting mesh. This simple inexpensive. Hence, it useful for large-scale production robust, low-cost as well RF/microwave components wearable body-area networks other such systems require...

A narrowband dual-band bandpass filter (BPF) with independently tunable passbands is presented through a systematic design approach. size-efficient coupling system proposed the capability of being integrated additional resonators without increasing size circuit. Two flag-shaped along two stepped-impedance are to firstly enhance quality response filter, and secondly add an independent adjustability feature filter. The dual passband centered at 4.42 GHz 7.2 GHz, respectively, narrow 2.12%...

This paper presents a circularly polarized flexible and transparent circular patch antenna suitable for body-worn wireless-communications. Circular polarization is highly beneficial in wearable wireless communications, where antennas, as key component of the RF front-end, operate dynamic environments, such human body. The demonstrated realized with flexible, robust conductive-fabric-polymer composite. performance explored flexible-transparent also compared its non-transparent counterpart...

This study introduces a small dual-band implantable antenna designed for wireless capsule endoscopy (WCE). operates in the Wireless Medical Telemetry Service (WMTS) 1.4 GHz as well Industrial, Scientific, and (ISM) 2.45 bands. The achieves miniaturization by employing open-ended slots, shorting pins, arc-shaped slots on radiating patch. final structure has compact size of <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math...