Patent ID: 9130267
Filing Date: 2015-09-08
Classification: H01Q

Abstract:
1. A wireless handheld or portable device comprising: an antenna system configured to operate in a first frequency region comprising a first frequency band, the antenna system comprising an antenna structure, a non-active matching and tuning system, and an external input/output (I/O) port; the antenna structure comprising: the radiating element of the antenna structure extending beyond an edge of the ground plane layer, wherein at least a portion of an orthogonal projection of the radiating element on a plane containing the ground plane layer does not overlap the ground plane layer; the non-active matching and tuning system comprising a first I/O port connected to the internal I/O port of the antenna structure, and a second I/O port connected to the external input/output (I/O) port of the antenna system; the antenna structure featuring at the internal I/O port, when disconnected from the non-active matching and tuning system, an input return loss curve having a minimum at a frequency above the first frequency region, said frequency being an intrinsic frequency at the internal I/O port of the antenna structure; the non-active matching and tuning system modifying an impedance of the antenna structure and providing impedance matching to the antenna system to transmit and receive electromagnetic wave signals in the first frequency band; wherein a longest side of a radiator rectangle of the radiating element has a dimension smaller than one twentieth of a free-space operating wavelength corresponding to a lowest frequency of the first frequency region; and wherein a ratio between the intrinsic frequency at the internal I/O port of the antenna structure and the highest frequency of said first frequency region is greater than 2.2.