Transparent and Flexible Antenna for Wearable Glasses Applications

Self Cite

A transparent dual‐band monopole (Inverted‐F) antenna using a micro‐metal mesh film (μ‐MMF) designed on the rear glass of an automobile (Hyundai K5) is presented. This design allows the optically transparent antenna to be installed in a wider space, thus overcoming the space limitation typically posed by roof‐mounted shark‐fin antennas. It can also reasonably solve the problem of low reception sensitivity and radiation interference from antennas operating in other service bands. The antenna is a combination of two simple monopoles operating in the frequency modulation (FM) (88–108 MHz) and the digital media broadcasting (DMB) (174–216 MHz) service bands. Measured reflection coefficients (S11) of the transparent antenna using μ‐MMF are under −6 dB (VSWR 3:1) in both the bands, and the radiation pattern shows directive patterns to the outward direction from the car; the average peak gains in the XY plane are 1.1 dB in the FM service band and 8.8 dB in the DMB service band.

Section: Configuration Of Transparent Antennamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Transparent dual‐band monopole antenna using a μ‐metal mesh on the rear glass of an automobile for frequency modulation/digital media broadcasting service receiving

Lee

Lee²,

Kim³

et al. 2018

Self Cite

“…A monopole antenna made up of Kapton polyimide substrate and conductive indium tin oxide resonating at 2.48 GHz which is flexible and transparent in nature is proposed in Reference . An antenna fabricated using physical vapor deposition method using IZTO/Ag/IZTO working at 2.4 to 2.5 GHz is presented for flexible wearable glasses application . A CPW fed transparent and flexible antenna made up of AgHT and PET operating from 23 to 29.5 GHz is proposed for 5G wireless communications .…”

Section: Introductionmentioning

confidence: 99%

“…An antenna fabricated using physical vapor deposition method using IZTO/Ag/IZTO working at 2.4 to 2.5 GHz is presented for flexible wearable glasses application. 19 A CPW fed transparent and flexible antenna made up of AgHT and PET operating from 23 to 29.5 GHz is proposed for 5G wireless communications. 20 An ITO and flexible glass-based transparent antenna working at 5.8 GHz frequency is proposed for WLAN applications.…”

Section: Introductionmentioning

confidence: 99%

Flexible CPW fed transparent antenna for WLAN and sub‐6 GHz 5G applications

Desai

Upadhyaya

Patel

et al. 2020

A transparent flexible co‐planar waveguide fed patch antenna using polyethylene terephthalate substrate is presented. The wideband high gain antenna having an overall dimension of 0.48λ × 0.64λ at the center frequency of 4.28 GHz is fabricated using a transparent sheet made up of Silver Tin Oxide (AgHT‐8). The performance of the proposed antenna is compared with four other nontransparent nonflexible and semitransparent flexible antennas. For the engineered design, patch geometry and feeding mechanism are kept constant whereas the substrate and patch materials are varied. Simulations are carried out using finite element method‐based full wave high‐frequency structure simulator after which the antennas are fabricated and tested. The proposed flexible transparent antenna has bandwidth in order of 40%, ranging from 3.89 to 5.9 GHz, with a notable gain over 3 dBi and efficiency greater than 80% for the entire frequency band. The bending conditions are also tested for the flexible transparent antenna which showed decent performance for sub‐6 GHz 5G and WLAN applications.

“…As an important candidate for biomedical data transmission, wearable antennas are widely researched, either in rigid or flexible forms . To provide accurate measurement as well as better comfort to the human body, many wearable devices are designed with curved surfaces for body attachment, such as glasses, wristbands and smartwatches . Therefore, flexible antennas instead of rigid ones are preferred due to their light weight and conformal property.…”

Section: Introductionmentioning

confidence: 99%

A flexible UWB inverted‐F antenna for wearable application

Wang

Chang

et al. 2017

A novel flexible antenna is proposed for communication with implanted devices in this letter. Polyimide is adopted as flexible substrate for conformal property. Based on inverted‐F structure, bow‐tie shaped structure is introduced on the top layer to achieve wideband performance. Besides, top and bottom layers are connected with a metal wall, which not only helps with miniaturization, but also leads to single‐sided fabrication requirement. Furthermore, the communication link with implanted antenna is estimated. Finally, the proposed flexible antenna is measured both in the air and around wrist in conformal form, showing good agreement with simulation results.