Abstract: A method for tuning an antenna comprising determining an operating frequency band of the antenna, and adjusting a capacitance of a tunable load according to the operating frequency band, wherein the tunable load is electromagnetically coupled to the antenna via a parasitic arm, and wherein the operating frequency band depends on the capacitance.

Abstract: A mobile node (MN) comprising an antenna comprising a proximate end, a distal end, and a midpoint, a first feed coupled to the antenna between the proximate end and the midpoint, a second feed coupled to the antenna between the distal end and the midpoint, a first switch configured to toggle between coupling the first feed to a main feed and coupling the second feed to the main feed, and a controller configured to control the toggling of the first switch.

Abstract: A radiator for wireless communication applications is disclosed. The radiator comprises a first conductor formed along an axis, wherein the first conductor is substantially elongated. The radiator also has a second conductor and a third conductor extending substantially outwardly and centrally from the first conductor. The second conductor and the third conductor are substantially extended from opposite sides of the first conductor and substantially perpendicular to the first conductor The radiator further has a feeding point formed substantially at the centre of the first conductor and at least one radiating element connected to each of the second conductor and the third conductor More specifically, the second conductor, the third conductor and the at least one radiating element connected to each of the second conductor and the third conductor are substantially symmetrical about a plane, the axis being coincident with and extending along the plane.