Planar Antenna for LTE/GSM/UMTS Operation in a Tablet Computer

Owing to the recent introduction of the long term evolution (LTE) operation for mobile broadband services, the mobile devices such as the smartphones, laptop computers and tablet computers are expected to meet the required bandwidths of the LTE/GSM/UMTS bands for wireless wide area network (WWAN) application. Therefore, the internal antenna embedded in these mobile devices should provide two wide operating bands of at least 698–960 and 1710–2690 MHz to cover three LTE bands (LTE700/2300/2500 in the 698–787/2300–2400/2500–2690 MHz bands) and five GSM/UMTS bands (GSM850/900/1800/1900/UMTS in the 824–894/880–960/1710–1880/1850–1990/1920–2170 MHz bands).

Proposed System: To design a small-size planar antenna with multi-band, LTE/GSM/UMTS operation in the tablet computer and to reduce more than 30% antenna size.