Novel laser-induced integrated thin-film antenna technologies applied to WWAN/LTE compact multi-layer mobile phone antenna designs

This article present a compact and internal multilayer thin-film WWAN/LTE mobile phone antenna design implemented by novel LITA (Laser-Induced Integrated Thin-Film Antenna) technologies jointly developed by ITRI and ACON in Taiwan. Through the proposed LITA technologies, metal layouts of antennas can be formed on the internal surface of a mobile phone casing successfully with conformal, thin-film type, multi-layer and highly integrating characteristics. Compared to the well-known LDS (Laser Direct Structuring) technologies, the proposed LITA technologies have advantages for achieving more flexibility on substrate choosing and multilayer thin-film antenna layouts implementation in practical applications. The constructed prototype is analyzed and discussed in this paper.