Abstract: An antenna, including a first dipole having a first polarization, the first dipole including a first pair of dipole arms, a second dipole having a second polarization, the second dipole including a second pair of dipole arms, at least one dipole arm of the first pair of dipole arms being located with respect to at least one dipole arm of the second pair of dipole arms so as to form at least one isolation slot therebetween, currents along the at least one isolation slot being operative to at least partially cancel mutual coupling between the first dipole and the second dipole, and a feed arrangement for feeding the first and second dipoles.

Abstract: An antenna, including a broadband vertically polarized monopole radiating element, a reflector having a projection in a first plane generally perpendicular to a vertical axis of the monopole radiating element, a plurality of horizontally polarized radiating elements arranged generally concentrically with respect to the monopole radiating element, each one of the horizontally polarized radiating elements having a projection in a second plane generally perpendicular to the vertical axis, the second plane being offset from the first plane in a direction along the vertical axis and a feed arrangement for feeding the monopole and horizontally polarized radiating elements.

Abstract: An antenna, including a first dipole having a first polarization, the first dipole including a first pair of dipole arms, a second dipole having a second polarization, the second dipole including a second pair of dipole arms, at least one dipole arm of the first pair of dipole arms being located with respect to at least one dipole arm of the second pair of dipole arms so as to form at least one isolation slot therebetween, currents along the at least one isolation slot being operative to at least partially cancel mutual coupling between the first dipole and the second dipole, and a feed arrangement for feeding the first and second dipoles.

Abstract: An antenna, including a broadband vertically polarized monopole radiating element, a reflector having a projection in a first plane generally perpendicular to a vertical axis of the monopole radiating element, a plurality of horizontally polarized radiating elements arranged generally concentrically with respect to the monopole radiating element, each one of the horizontally polarized radiating elements having a projection in a second plane generally perpendicular to the vertical axis, the second plane being offset from the first plane in a direction along the vertical axis and a feed arrangement for feeding the monopole and horizontally polarized radiating elements.

Abstract: A method of manufacturing antennas including forming at least one conductive antenna array pattern having an antenna feed network on at least a first relatively flexible substrate and adhering the at least one flexible substrate to at least one first surface of at least one relatively rigid substrate.

Abstract: A retractable antenna including an outer elongate telescopic element extending along an elongate axis, an inner elongate telescopic element which is slidable along the elongate axis with respect to the outer elongate telescopic element from a fully retracted position to a fully extended position; and an extended position retaining spring fixedly positioned with respect to the outer elongate telescopic element for frictional extended position retaining engagement with the inner elongate telescopic element when the inner elongate telescopic element is in the fully extended position but not when the inner elongate telescopic element is generally in a retracted position.

Abstract: A retractable antenna including an outer elongate telescopic element extending along an elongate axis, an inner elongate telescopic element which is slidable along the elongate axis with respect to the outer elongate telescopic element from a fully retracted position to a fully extended position; and an extended position retaining spring fixedly positioned with respect to the outer elongate telescopic element for frictional extended position retaining engagement with the inner elongate telescopic element when the inner elongate telescopic element is in the fully extended position but not when the inner elongate telescopic element is generally in a retracted position.

Abstract: A retractable antenna including an outer elongate telescopic element extending along an elongate axis, an inner elongate telescopic element which is slidable along the elongate axis with respect to the outer elongate telescopic element from a fully retracted position to a fully extended position; and an extended position retaining spring fixedly positioned with respect to the outer elongate telescopic element for frictional extended position retaining engagement with the inner elongate telescopic element when the inner elongate telescopic element is in the fully extended position but not when the inner elongate telescopic element is generally in a retracted position.

Abstract: A connection mechanism for snap-fitting an antenna into a hole in a receptacle, the receptacle typically being part of a 2-way mobile communication device. A latch, preferably mounted on a sleeve, including a stem and a latch head, extends around a circumference of the antenna. The latch is inwardly depressible to insert the antenna through the hole and is able to return to a non-depressed position to retain the antenna against the second end.