Compact LTE/WWAN antenna with reduced ground effects for tablet/laptop applications

Abstract

A compact uniplanar antenna design for tablet/laptop applications is proposed. The main design principle of this antenna is the use of coupling-feed mechanism. The proposed antenna is composed of a T-shaped feeding strip, parasitic shorted strip, and a step tuning stub. With a small size of 50 mm × 15 mm × 0.8 mm, the proposed antenna is able to excite dual wideband operation that can cover the entire LTE/WWAN operations 698–960 MHz and 1710–2690 MHz. Furthermore, the proposed antenna also exhibits reduced ground effects, in which reducing the ground size of proposed antenna will not affect the antenna's performances.