Abstract: A single or multiple band quarter wave resonator antenna assembly for a communications device including a resonator element as a substrate element having disposed thereupon at least a pair of conductor trace elements. The conductor trace elements are disposed upon opposite sides of the substrate element and are operatively coupled to the communications device. The antenna assembly further including a separate conductive member having an approximate ¼ wavelength or greater dimension, which may be defined as the internal printed wiring board ground plane of the communications device.

Abstract: A dual frequency wideband antenna assembly for use in a wireless communication device. The antenna assembly includes a first radiating element having two substantially collateral arms with a dielectric member therebetween and a second radiating element having two substantially collateral arms also with a dielectric member therebetween. A conducting element operatively connects the first and second radiating elements to each other in an adjacent and substantially coplanar relation. The assembly is spaced a predetermined distance from the ground plane of a printed wiring board and is operatively connected thereto at several predetermined locations by several components. One component, a capacitor, operatively couples one of the arms of the first radiating element to a ground plane while other components, namely a feed element and a grounding element operatively connect one of the arms and a portion of the second radiating element, respectively, to the ground plane.

Abstract: A dual frequency wideband antenna assembly for use in a wireless communication device. The antenna assembly having a first resonator element disposed away from the ground plane element, said first resonator element being operatively coupled at a first location to the ground plane and being operatively coupled at a second location to the RF signal port; a second resonator element disposed away from the ground plane. The first and second resonator elements are coupled via a bridge conductor and a capacitive tuning network. The capacitive tuning network may include a discrete capacitor or an adjustable capacitor which varies in response to a signal.

Abstract: An antenna assembly for a wireless communication device. The antenna assembly is mountable onto a printed wiring board (PWB) and consists of first and second conducting elements. The first conducting element is capacitively coupled via a matchable shunt and operatively connected to a ground plane of the PWB, while the second conducting element is operatively connected to the ground plane of the PWB at two locations. The first and second conducting elements are operatively connected to each other by a tunable bridge capacitor and together form two orthogonal magnetic dipole elements. The antenna assembly provides substantially circular hemispherical polarization over a wide range of amplitudes by virtue of the geometry and orientation of the two magnetic dipole elements which are fed with equal amplitude, but in-phase quadrature. The matchable shunt acts as an impedance transformer to yield a low voltage standing wave ratio (VSWR) of less than two-to-one at the operating frequency.

Abstract: A multiband antenna operates in at least a first frequency band and a second frequency band, a higher frequency band. A dipole has a first conductive leg and a second conductive leg and may be directly fed between the first and second legs. At least a portion of the first leg of the dipole has a meander configuration. The first leg has an electrical length of about one-quarter wavelength, or an odd multiple thereof, in the first frequency band and the second leg has an electrical length of about one-quarter wavelength, or an odd multiple thereof, or more in the first frequency band. A non-driven parasitically-excited conductive element is closely spaced to the first dipole leg and is electrically connected to the second dipole leg. The parasitic element has an electrical length of about one-quarter wavelength, or an odd multiple thereof, in the second frequency band.

Abstract: A printed antenna comprises an elongate first dipole half element provided on one side of a dielectric substrate. The first dipole half element is end-fed via a microstrip transmission line. A second dipole half element is provided on the opposite side of the dielectric substrate. The second dipole includes first and second elongate elements disposed one on each side of the longitudinal axis of the first dipole half element as viewed through the substrate. The first and second elements are a quarter of a wavelength long and are parallel to the first dipole half element. A ground plane on the second side of the substrate is coupled to the first and second elongate elements at a distance from a free end of the first dipole half element corresponding substantially to a quarter wavelength of the frequency of interest.

Abstract: A system and method for rating the performance of competing antennas under various environmental conditions is herein disclosed. The present invention provides a method to statistically characterize antenna performance, relating actual operating conditions to the likelihood of completing a reliable wireless communication link within a desired confidence level. The invention provides a system and method to predict antenna performance based upon actual usage condition factors, such as power needed for transmitting, and radiation absorption by a user, relative to the angle of orientation between the antenna under test and a corresponding antenna on the opposite side of a wireless communication link.

Abstract: An antenna assembly for transmitting a radio signal from a radio signal transmitting-device includes an antenna unit comprised of a dipole driven antenna member for transmitting a radio signal from the radio signal transmitting device. A radiation shielding member shields a user from a portion of the radio signal transmitted by the driven antenna member. The antenna unit may be pivotally mounted so that it is disposable at selectable positions relative to the shielding member. The dipole driven antenna member may include a first and a second segment made from a metal foil. The radiation reflector directs a portion of the radio signal away from the user toward an open transmission area, so as to extend a transmission range of the antenna assembly. At least some of the RF signal that is emitted from the driven antenna member toward the user is blocked by the radiation shielding member.

Abstract: An asymmetric dipole antenna assembly is provided for wireless communications devices, and includes separate upper and lower conductor traces and a low impedance feedpoint at the junction of the conductor traces. The upper conductor trace may include a matching network and may be printed on a planar printed circuit board mounted proximate the top of the a hand-held wireless transceiver. The upper conducting trace provides ¼ wave resonance over a desired frequency range and a 50 ohm input impedance for the antenna. The lower conductor trace may be provided by the ground trace of the wireless device circuitry, requiring only a minimum effective trace length of ¼ wavelength at the lowest frequency of operation. Polarization of the antenna is determined by the orientation of the longest dimension of the lower conductor.

Abstract: An antenna assembly achieving improved directionality and signal strength using a configured conductive radiator disposed in relationship with the ground plane element of a wireless communication device. The configured conductive radiator includes an elongate slot aperture and surfaces directed toward the ground plane element. The antenna assembly further includes a dielectric element for communicatively coupling the conductive radiator and the ground plane member. Preferably, the dielectric element may be disposed between a portion of the radiator element and the ground plane member, thus forming a compact, directional antenna system.

Abstract: An antenna assembly for a hand-held radio transceiver, examples of which include a cellular telephone and PCS device. A multiple element antenna assembly is utilized to provide improved performance characteristics. The antenna assembly may include a conductive radiation director element and a support member for maintaining the director element in deployed and undeployed orientations. The antenna assembly may be selectively attached to a base portion of an active antenna element of a transceiver or may be pivotally secured to the transceiver.

Abstract: A multi-element radio antenna assembly is described. The antenna assembly includes a ground plane element having an array of conductor elements disposed thereon. A pair of LC trap structures provide dual band resonance for cellular telephone and PCS device bandwidth ranges. Additional performance may be achieved with parasitic reflector and director elements. The multi-element directional antenna finds particular applicability for in-vehicle use.

Abstract: For a wireless telecommunication device, such as a cellular telephone or PCS device, a combined battery pack assembly and antenna assembly for selective detachment therewith. The combined assembly is removably attached to the phoneset member of the wireless communication device. The combined assembly is intended to be selectively removed and subsequently re-attached to the phoneset member. The antenna assembly may be positioned on the removable assembly near the upper portion thereof, and away from user contact during intended operation.