Basic Study on an Antenna Made of a Transparent Conductive Film

A dual‐band optically transparent antenna having two slotted circular rings with partial ground plane is proposed for smart applications. The antenna has circular split ring resonators (SRRs) array which offers negative refractive index properties to the resonator. The antenna is fed using microstrip feed line which is matched at 50 Ω. The conducting patch, partial ground plane and two circular SRRs are made up of transparent conducting thin film AgHT‐8 having transparency of above 80%. Substrate in the form of Plexiglas is used for making the antenna structure completely transparent. Metamaterial is incorporated for achieving acceptable values of antenna gain. The patch design is engineered for antenna operation in IEEE a/b/g/n frequency bands working at 2.4 GHz and 5.5 GHz, respectively. The size of the proposed transparent antenna is 35 × 35 × 1.84 mm3 with measured impedance bandwidth of 13.27% and 5.28% achieved for lower frequency band of 2.4 GHz and the upper frequency band of 5.5 GHz, respectively. The proposed antenna is useful for smart devices communicating over WLAN frequency bands without need of extra board space due to the optical transparency of antenna.

Section: Introductionmentioning

confidence: 99%

Transparent dual band antenna with μ‐negative material loading for smart devices

Desai

Upadhyaya

2018

“…Nessel et al, a NASA engineer revealed wideband, high gain, multilayer Yagi antenna for X band using AgHT‐8. Guan et al designed PIFA and monopole antenna for WLAN applications. Transparent conductive oxide material AgHT‐4 had been used by Katsounaros et al for making UWB antenna followed by designing the transparent antenna for RFID applications .…”

Section: Introductionmentioning

confidence: 99%

Dual band slotted transparent resonator for wireless local area network applications

Desai

Upadhyaya

Palandöken

2018

In this paper, a transparent dual-band antenna having a size of λ/4 × λ/4 mm 2 at the lower resonance frequency of 2.4 GHz is proposed. Antenna operates at the frequency band of 2.47 GHz and 5.32 GHz, respectively. The resonator geometry is in the form of a modified slotted split ring resonator with the extended slot line sections at the split ends. AgHT-8 conductive oxide material is used for the radiating element and ground plane of the antenna. Optically transparent borosilicate glass having a dielectric constant of 7.75 with 2 mm thickness is used as the substrate material to achieve the optical transparency. The impedance bandwidth of the proposed antenna in the lower and higher frequency bands is 8.3% (2.34 GHz-2.54 GHz) and 2. GHz), making the proposed transparent antenna suitable for dual-band WLAN applications. K E Y W O R D SAgHT-8, dual band, glass substrate, transparent conductive oxide, WLAN antennas

“…To get transparency, the previous reported antennas used a rigid glass as a substrate. Recently, to fabricate transparent antennas, transparent indium tin oxide (ITO) and fluorine doped tin oxide (FTO) conductive films are utilized . These films allow transmission of electric currents while provide good optical transparency .…”

Section: Introductionmentioning

confidence: 99%

Inkjet printed transparent and bendable patch antenna based on polydimethylsiloxane and indium tin oxide nanoparticles

Khan

Ali

Bae

et al. 2016

We propose a transparent and bendable inset microstrip patch antenna for 2.4 GHz wearable electronics applications. The proposed antenna is designed in high frequency structure simulator and realized by depositing indium tin oxide nanoparticles as a radiating patch and a ground on the polydimethylsiloxane substrate through Fujifilm Dimatix DMP‐3000 inkjet material printer at ambient conditions. On a flat position, the theoretical gain of the proposed antenna is 5.75 dBi, and its practical reflection coefficient (S11) is −25.9 dB. Under bending down to a diameter of 10 cm, the reflection coefficient is decreased up to 28.5%. It achieves the transparency of 91.5, 88, and 80% at thickness 1, 1.5, and 2 mm, respectively, and its restoration time is not more than 210 ms. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2884–2887, 2016