A compact internal antenna for LTE/WWAN mobile phone applications

Abstract

A compact multiband internal antenna is proposed for LTE/WWAN mobile phone application. The structure of proposed antenna is composed of a coupling feed L‐shaped monopole and a grounded meandered branch. The coupling feed L‐shaped monopole excites a widely operating band to cover the frequency range of 1750∼2525 MHz for the DCS/PCS/UMTS/LTE/WLAN operation. The grounded meandered branch excites the low frequency operation band to cover the frequency range of 675∼985 MHz for the LTE700/GSM operation. The antenna occupies a small volume of 4 × 14 × 45 mm3 only. The measured result of the 6 dB return loss meets for each operating band. Moreover, the antenna gain and efficiency are measured in good performances. The measured radiation patterns are similar to general monopole antenna. The characteristics of the proposed antenna make it attractive for slim mobile phone applications. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:1834–1838, 2016

Design of CPW Antenna for Future Wireless Application

“…To meet the LTE communication the combined type (Low wide-band antenna and high wide-band antenna) were preferable [9]. The meandered structure used to achieve the LTE lower band and coupling feed enhances the impedance matching [5]. The data exchanging capabilities and higher data transmission rate were improved by utilizing MIMO antenna [9].Folded Lshaped antenna with driving strip as well as short strip coupled together with matching circuit were desirable to achieve LTE communication bands [10] Coplanar Waveguide fed is used for most of the antenna design for many applications [18].…”