A fully integrated solution providing scan-beam capability with a single antenna is presented in this paper for the first time. The proposed system includes reconfigurable rectangular spiral set of micro electro mechanical (MEMS) switches, which are monolithically and packaged onto same substrate. based on single-arm antenna, capable changing its radiation pattern using radio frequency-MEMS (RF-MEMS) switches. RF-MEMS switches conventional microwave substrate printed circuit board (/spl...

This paper aims to design, fabricate, and analyze transparent flexible monopole antennas for an application in wearable glasses. A multilayer electrode film composed of 100-nm-thick indium-zinc-tin oxide (IZTO)/Ag/IZTO (IAI), a type conducting electrodes, is selected as the conductors ground planes The average transparency proposed measured be 81.1% visible wavelength, electrical conductivity 2 000 S/m. are fabricated with physical vapor deposition process high vacuum. Moreover,...

This communication presents the design, fabrication, and measurement of transparent antennas with metal mesh (MM) for wireless applications such as smart windows, mobile devices, Internet Things. The MM was proposed a electrode high conductivity in electrical performance, proper transparency optical low fabrication cost compared to traditional thin film electrode. To analyze performance antenna fabricated by MM, were designed operate 2.4-2.5 GHz WLAN band (802.11b). conductive patch using...

This paper presents a magnetic resonance wireless power transfer (WPT) system that uses three coils, planar receiver and operates at 6.78 MHz,. Effective is ensured by establishing an impedance matching condition for this WPT system. A metamaterial (MTM) array having dimensions of 20 cm X 30 also positioned near the load coil to concentrate field enhance efficiency. The result maximal improvement 27% in efficiency distance 50 cm. impact ground plane on examined. By utilizing MTM array,...

This letter presents transparent microstrip patch antennas made of two types conductive films, which are multilayer film (MLF; IZTO/Ag/IZTO) and metal-mesh (MMF; Cu). The sheet resistance levels the MLF MMF 2.52 0.18 Ω/□. transparencies over 80% 60% at a 550-nm wavelength, respectively. design dimensions follow conventional simple antenna. A acryl substrate is used for proposed antennas. parts also copper sheets (CS; case 1) performance comparison to (case 2) 3). resonance frequency band...

Reconfigurable beam steering using a microstrip patch antenna with U-slot is proposed for wearable fabric applications. The was manufactured on substrate and designed to steer the directions at operation frequency of 6.0 GHz. U-shaped slot proximity-coupled feeding technique are applied design antenna. By configuring two artificial switches between feed patch, given three (S0, S1, S2). maximum steerable in <i xmlns:mml="http://www.w3.org/1998/Math/MathML"...

A compact frequency-reconfigurable multipleinput-multiple-output (MIMO) antenna on a laptop is proposed for multiband LTE services. Each MIMO consists of two planar inverted-F (PIFA) elements, using T-shaped dc line and p-i-n diodes (D1 D2), in conjunction with the proximity-coupled feed structure. By effectively minimizing its dimension interference performance, designed to fit within The covers 17/13 bands (704-787 MHz, VSWR <; 3) at State 1 D2: ON state), 20/7 (791-862 2500-2690 2 OFF...

The objective of this letter is to design a radiation-pattern reconfigurable antenna that operates at the Medical Device Radio communications Service band (MedRadio band: 401–406 MHz) for medical implants. By spiraling monopole, an miniaturization accomplished. Two artificial switches are employed perform property. proposed has dimensions <formula formulatype="inline" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex...

The design of an external antenna for digital television (TV) has become more challenging because its relatively large size is not conformal to and esthetically preferred commercial use. This article presents a feasibility study on transparent antennas ultrahigh definition (UHD) TV applications in Korea (470-771 MHz). proposed are patch dipole types, representing directional omnidirectional radiation, respectively. Both use metal mesh film with optical transparency above 70% low sheet...

This letter introduces a novel transparent single-layer frequency-selective surface (FSS) design on conventional window glass, which aimed at achieving signal selectivity for 5G millimeter-wave communication (n257; 26.5–29.5 GHz). The unit cell of the FSS layer features structure formed by square loops and spirals, using small-width metal lines (200 250 μm). Additionally, new approach is presented to enhance transmission characteristics integrating dielectric slab while maintaining good...

A compact internal antenna that is composed of a coupled loop with two branch lines presented. The proposed operates at wide frequency bands (698 ~ 960 MHz/1710 2690 MHz) to cover octabands LTE 700/GSM 850/GSM 900/DCS 1800/PCS 1900/WCDMA 2100/LTE 2300/LTE 2500 for the 4G mobile handset. designed and fabricated on support (polyester; ε <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">r</sub> =3.2) limited volume, i.e., 7×11×46 mm <sup...

In this letter, we propose a broadband reconfigurable antenna for aircraft communication that covers the VHF/UHF/L-bands (30-300/300-400/960-1220 MHz). The proposed structure is modified biconical unipole antenna. frequency-reconfigurable using p-i-n diode switch. on state, operates as V-type traveling and 30-300 960-1150 MHz. off 300-400 1150-1220 maximum power dissipation of 18 W. has VSWR <; 2.5 all bands. Antenna gain less than 1.8 dBi at 30-400 MHz 960-1220

In this letter, a reconfigurable radiation pattern antenna for multiple-input-multiple-output (MIMO) applications on mobile devices is proposed. The operating frequency band of the 5.15-5.35 GHz wireless local area network (WLAN) 802.11a service. Each composed loop-and-dipole structure, as well two switches pattern, to generate beam in three different directions. proposed designed have an orthogonally directional with high isolation and low-correlation coefficient MIMO environment.

This letter presents a radiation-pattern-reconfigurable antenna for Fitbit Flex wristband, which provides health information about the human body. The advantages of this are improvements in performance and controlling beam directions compared to existing Flex. We proposed placement an on upper side wristband as monopole antenna. antennas by several factors. Total radiation power (TRP) total isotropic sensitivity (TIS) measured, specific absorption rate (SAR) result is simulated. show improvement when

ABSTRACT This article presents an antenna with the characteristics of flexibility and transparency for use in laptop computers. The operating frequency band is 5.18–5.32 GHz, wireless local area network 802.11a service. proposed was fabricated on a polyamide substrate, conducting material consisted multilayer film (IZTO/Ag/IZTO). In addition, we designed measured two antennas electrodes (IZTO/Ag/IZTO Ag) to compare evaluate their performance transparency. Moreover, applied this application...

Abstract Convex and concave channel structures are formed due to the increase in number of layers 3D NAND flash, along with limitations technology etch holes channel. The program, interference, retention characteristics convex investigated. program interference improved structure concentrated E-field word line. dispersed E-field. In addition, various space materials considered confirm cell according dielectric constant, it was found that these when air is used.

A compact ultrawideband (UWB) antenna with a band-notch function is proposed for laptop applications. The realized by half-wavelength parasitic element printed on the rear side of substrate. impedance bandwidth (VSWR < 2) 3.1 ~ 11.4 GHz (114%) notched frequency from 5.05 to 5.90 GHz. has fairly good omnidirectional pattern, and average gain -3.0 -1.2 dBi over UWB band except band. performance confirmed simulation measurement results.

A frequency-reconfigurable antenna for a mobile phone with small volume is proposed. The proposed consists of planar inverted F-antenna (PIFA) 4×36×5 mm3 and monopole embedded in the same space. two antennas are excited by separate feeds common ground plane. switch used PIFA operation. can cover either LTE (698–806 MHz) or GSM900 (880–960 depending on state switch. PCS1900 (1.85–1.99 GHz) m-WiMAX (3.4–3.8 WLAN 802.11a (5.15–5.35 gain range −1.99–0.61 dBi over 700 MHz–2 GHz bands 2.39–4.62...

A multilayer thin film antenna for mobile devices is proposed. The proposed consists of a (indium–zinc–tin oxide) IZTO/Ag/IZTO film, which fabricated on polyimide substrate (ε r = 3.5) and copper layer. centre frequency the 1260 MHz. geometry made up coupled loop two branches. was using DC pulse sputter instrument. measured simulated results are given. peak gain 1.66 dBi. transparency 86%. advantages high transparency, low resistivity flexibility.

This article presents a compact, planar, and circularly polarized array antenna operating in the W-band (84.5–110 GHz), with all its prototypes fabricated using low-cost, traditional, microwave printed circuit board composed of Rogers RT/duroid 5880 (ε&lt;sub&gt;r&lt;/sub&gt; = 2.2, tanδ 0.009). The final design that was measured 4 × having an overall size 9 mm 20 0.254 used series feeding to reduce sidelobes. Measurements patch showed approximately 6.9% 3-dB axial ratio bandwidth along 15.2...

A compact two-channel MIMO antenna for mobile handheld devices is proposed. The consists of two folded monopoles with a connecting line facing to the feed point and orthogonally arranged at edge ground plane. This provides polarisation pattern diversities excellent isolation characteristic (< −25 dB fo). proposed designed 2.4–2.5 GHz, WLAN (802.11n) service band. apparent diversity gain in required bandwidth 9.95 dB.

The quad-band antenna, which is composed of two compact dual-band antennas, presented for portable media player (PMP) applications. antenna the broadcasting dual band (DVB-H UHF: 470-862 MHz; L: 1452-1492 MHz) a planar inverted-F (PIFA) with self-complementary structure (SCS) broadband performance. measured operation bandwidth (VSWR <; 4) 500 MHz (370-870 at UHF and 220 (1300-1520 L band. two-channel WLAN multiple-input-multiple-output (MIMO) high isolation performance telecommunication...

This letter presents the comparison of performance planar textile resonators (PTRs) with various forms conductive patterns. The materials pattern included copper sheet and wires three different thicknesses. PTRs thin were found to be flexible stable for wearable applications. To verify in MR-WPT, a symmetrical four-coil system was measured. study considered normal standard condition without any modification physical. results showed that wires, especially 1.0 mm thickness, had highest...

In this letter, the effect of human body in a magnetic resonance wireless power transfer (MR-WPT) system for wearable and implantable devices is studied. To implement experiment, muscle-mimicking liquid configured with parameters similar to those body. The transmitter part located outside (in air), receiver implanted liquid. proposed 3-coil MR-WPT system, which operates at 6.78 MHz shows effectively higher efficiencies compared 4-coil near distance predicted position pacemaker. results...