An antenna structure (300, 500) comprising: a multi-layer printed circuit board having first and second inner layers separated by a first material region and third and fourth outer layers separated from the first and second inner layers respectively by second and third material regions; a first set of conductive elements (305, 505, 310, 510, 315, 515) that form a first portion of the antenna structure, being formed on the first inner layer and comprising a first radiator arm (305, 505), a first shorting arm (310, 510) and a feeder arm (315, 515); a second set of conductive elements (306, 506, 311, 511) that form a second portion of the antenna structure, being formed in parallel to the first set of conductive elements (305, 505, 310, 510, 315, 515) on the second inner layer, and comprising a second radiator arm (306, 506) and a second shorting arm (311, 511), the first set of conductive elements and the second set of conductive elements being configured to act as an inverted f antenna, wherein the first radiator arm (305, 505) and the second radiator arm (306, 506) are connected together using a plurality of vias (330a-n, 530a-n) and wherein the first shorting arm (310, 510) and the second shorting arm (311, 511) are connected together using a second plurality of vias (330a-n, 530a-n); a first conductive ground plane (325, 525) that is formed on the first layer of the multi-layer printed circuit board; and a second conductive ground plane (326, 526) that is formed in parallel with the first conductive ground plane (325, 525) on the second layer of the multi-layer printed circuit board, the second conductive ground plane (326, 526) and the first conductive ground plane (325, 525) being connected together using conductive vias (325a-n, 535an). a multi-layer printed circuit board having first and second inner layers separated by a first material region and third and fourth outer layers separated from the first and second inner layers respectively by second and third material regions; a first set of conductive elements (305, 505, 310, 510, 315, 515) that form a first portion of the antenna structure, being formed on the first inner layer and comprising a first radiator arm (305, 505), a first shorting arm (310, 510) and a feeder arm (315, 515); a second set of conductive elements (306, 506, 311, 511) that form a second portion of the antenna structure, being formed in parallel to the first set of conductive elements (305, 505, 310, 510, 315, 515) on the second inner layer, and comprising a second radiator arm (306, 506) and a second shorting arm (311, 511), the first set of conductive elements and the second set of conductive elements being configured to act as an inverted f antenna, wherein the first radiator arm (305, 505) and the second radiator arm (306, 506) are connected together using a plurality of vias (330a-n, 530a-n) and wherein the first shorting arm (310, 510) and the second shorting arm (311, 511) are connected together using a second plurality of vias (330a-n, 530a-n); a first conductive ground plane (325, 525) that is formed on the first layer of the multi-layer printed circuit board; and a second conductive ground plane (326, 526) that is formed in parallel with the first conductive ground plane (325, 525) on the second layer of the multi-layer printed circuit board, the second conductive ground plane (326, 526) and the first conductive ground plane (325, 525) being connected together using conductive vias (325a-n, 535an).