公开(公告)号：US20180131080A1

公开(公告)日：2018-05-10

申请号：US15572308

申请日：2016-06-03

Applicant: THE SECRETARY OF STATE FOR DEFENCE

Inventor： STEPHEN JOHN BOYES

IPC: H01Q1/27 ,  H01Q3/34 ,  H01Q21/06

CPC classification number: H01Q1/273 ,  H01Q3/34 ,  H01Q21/062 ,  H01Q21/067

Abstract: A body-wearable antenna system is described that comprises at least two antenna elements (2, 4) arranged to be mountable in a substantially equi-spaced distributed array around a user's body. Each antenna element is a directional type antenna and the antenna system is configurable such that when worn the antenna elements operate in phase to deliver a combined, higher gain, omnidirectional performance radiating away from the user's body, compared to one or more conventional body-worn omnidirectional antennas. The antenna system can operate in transmit and receive. Each antenna element may be a planar inverted-F antenna (PIFA) housed in a protective radome (3, 5). Each PIFA may feature at least one slot cut into the radiating top plate or at least one parasitic radiator, or a combination of both, to allow operation within distinct frequency bands and with predetermined impedance bandwidth.