A 2.45 GHz transparent antenna for wearable smart glasses

We propose a single-band, optically transparent monopole antenna intended for integration within glasses based smart wearable devices. The proposed antenna is designed to operate at 2.45 GHz to enable Wireless Local Area Network (WLAN) and Bluetooth connectivity. The antenna pattern is deposited on a glass substrate with 26.5 mm×25 mm dimensions utilizing an Indium Tin Oxide (ITO) solution. The glass pyrexsubstrate (a thickness of 3 mm with a dielectric constant of 46) was applied with a single layer of ITO by means of a magnetron sputtering technique. The sputtered film's properties are as follows: a thickness of approximately 460 nm, a sheet resistance (resistivity) of 10.4 Ω/ □, and an average optical transmission in the visible spectrum (400–750 nm) of around 81%. Utilizing a photolithography process, the pattern was transferred onto the coated glass substrate using a photosensitive film and etched in a solution of HCl, HNO 3 , and de-ionized (DI) water. To conclude, the proposed compact and transparent design along with the radiation characteristics suggests that it would be a reasonable candidate for integration within smart wearable glasses.