Patent ID: 9608329
Date: 2017-03-28
CPC Classifications: H01Q,H04B

Claim:
1. A multiband antenna device comprising a conductive elongate antenna element configured for electrical connection to a conductive groundplane at a grounding point, and for electrical connection to a radio transmitter/receiver at a feeding point, wherein the antenna element comprises a first portion and a second portion, the first portion is configured to extend in a first direction along a first outside edge of the groundplane, and then in a second direction along a second outside edge of the groundplane, and the second portion of the antenna element is configured to double back next to the first portion in a third, substantially counter-parallel direction back along the second outside edge of the groundplane, and then in a fourth direction along the first outside edge of the groundplane, the second portion of the antenna element terminating with a high impedance portion, the high impedance portion of the antenna element being positioned between the first edge of the ground plane and the first portion of the antenna element, and forming a narrow gap that electromagnetically couples the first and second portions of the antenna element.