Abstract: An internal antenna for wireless devices comprising a ground plane and a planar loop antenna. The shorted loop antenna is provided with a gap and operates at a quarter wavelength. The compact single feed dual or multi band internal antenna is realized either through composite assembly of an active outer and inner radiating elements or by a selective combination of an active outer radiating element and a parasitic inner radiating element. The inner radiating element of the proposed invention is completely encompassed within the outer radiating element. The resonant tuning of the internal antenna is accomplished by means of the matching stub and capacitive loading plates with the matching stubs being entirely internal to the outer radiating element.

Abstract: The present invention provides an internal antenna for wireless devices comprising a ground plane and a planar loop antenna. The shorted loop antenna is provided with a gap and operates at a quarter wavelength. The compact single feed dual or multi band internal antenna is realized either through composite assembly of an active outer and inner radiating elements or by a selective combination of an active outer radiating element and a parasitic inner radiating element. The inner radiating element of the proposed invention is completely encompassed within the outer radiating element. The resonant tuning of the internal antenna is accomplished by means of the matching stub and capacitive loading plates with the matching stubs being entirely internal to the outer radiating element.

Abstract: A multi-band antenna including a retractable antenna and a meander antenna wherein the meander antenna may take several forms. In all of the embodiments, the meander antenna comprises first and second meander radiating elements. In one form of the invention, the closed ends of the loops of the second meander radiating element protrude into the open ends of the loops of the first meander radiating element. In other forms of the invention, active and/or passive elements are positioned between the first and second meander radiating elements. In some forms of the invention, the active or passive elements include stubs which protrude into the open ends of the loops of the first meander radiating element.

Abstract: A multi-band antenna including a retractable antenna and a meander antenna wherein the meander antenna may take several forms. In all of the embodiments, the meander antenna comprises first and second meander radiating elements. In one form of the invention, the closed ends of the loops of the second meander radiating element protrude into the open ends of the loops of the first meander radiating element. In other forms of the invention, active and/or passive elements are positioned between the first and second meander radiating elements. In some forms of the invention, the active or passive elements include stubs which protrude into the open ends of the loops of the first meander radiating element.