Abstract: Broadband HF antenna system includes a conductive radiating element in the form of a continuous conductive loop. The conductive loop includes first and second elongated conductor portions. The conductive loop is electrically connected at first and second loop ends to an impedance matching network disposed within a chassis. The first elongated conductor portion is comprised of a whip antenna which functions as a cantilevered spring attached at one end to the rigid chassis. The whip antenna is resiliently maintained in a curved state by a tension force applied by the second elongated conductor portion. A spacing or gap between the first and second elongated conductor portions to establish the loop configuration is maintained exclusive of any spacer or hanger element.

Abstract: Broadband HF antenna system includes a conductive radiating element in the form of a continuous conductive loop. The conductive loop includes first and second elongated conductor portions. The conductive loop is electrically connected at first and second loop ends to an impedance matching network disposed within a chassis. The first elongated conductor portion is comprised of a whip antenna which functions as a cantilevered spring attached at one end to the rigid chassis. The whip antenna is resiliently maintained in a curved state by a tension force applied by the second elongated conductor portion. A spacing or gap between the first and second elongated conductor portions to establish the loop configuration is maintained exclusive of any spacer or hanger element.

Abstract: A wireless communications system may include wireless communications devices configured to communicate with one another on a given channel via a time division based communications protocol. A communication initiation wireless communications device configured to transmit data in an initiator time slot of the given channel. A repeater wireless communications device configured to receive the transmitted data from the communications initiation wireless communications device in the initiator time slot and retransmit the data in a repeater time slot of the given channel. A receiver wireless communications device configured to determine a respective quality metric for data from each of the initiator time slot and the repeater time slot, and use data from the initiator time slot or the repeater time slot based upon the respective quality metrics thereof.

Abstract: Ventilated heat shields and methods are disclosed. The ventilated heat shield can use varying patterns of insulating material with ventilation regions arranged in one or more two-dimensional (2D) and/or three-dimensional (3D) patterns to provide thermal insulation and air channels that allow for dissipation of heat and the inflow of cooling air. The ventilated heat shield can be used in applications where two surfaces are required to be in very close proximity or contact with each other to reduce the transfer of heat from one surface to the other. An example application for the ventilated heat shield is in a vehicle braking system.

Abstract: A wireless communications system may include wireless communications devices configured to communicate with one another on a given channel via a time division based communications protocol. A communication initiation wireless communications device configured to transmit data in an initiator time slot of the given channel. A repeater wireless communications device configured to receive the transmitted data from the communications initiation wireless communications device in the initiator time slot and retransmit the data in a repeater time slot of the given channel. A receiver wireless communications device configured to determine a respective quality metric for data from each of the initiator time slot and the repeater time slot, and use data from the initiator time slot or the repeater time slot based upon the respective quality metrics thereof.

Abstract: A portable whip antenna (100) is used to form a parallel wire transmission line (304) and support for a dipole antenna system (900). The portable whip antenna is formed of an elongated monopole radiating element (306) extending from a feed point (114, 202) comprising an RF connector, which can be connected directly to a portable radio transceiver (200). A first flexible conductor extends parallel to and spaced apart from the elongated monopole radiating element of the whip antenna to form the parallel wire transmission line. A first dipole element (512) is formed from a portion of the first flexible conductor extending from a link member in a first direction transverse to a length of the elongated monopole radiating element. A second dipole radiating element (516) is formed of an elongated length of a second flexible conductor (522) extending in a second direction transverse to the elongated monopole radiating element.

Abstract: A portable whip antenna (100) is used to form a parallel wire transmission line (304) and support for a dipole antenna system (900). The portable whip antenna is formed of an elongated monopole radiating element (306) extending from a feed point (114, 202) comprising an RF connector, which can be connected directly to a portable radio transceiver (200). A first flexible conductor extends parallel to and spaced apart from the elongated monopole radiating element of the whip antenna to form the parallel wire transmission line. A first dipole element (512) is formed from a portion of the first flexible conductor extending from a link member in a first direction transverse to a length of the elongated monopole radiating element. A second dipole radiating element (516) is formed of an elongated length of a second flexible conductor (522) extending in a second direction transverse to the elongated monopole radiating element.

Abstract: Ventilated heat shields and methods are disclosed. The ventilated heat shield can use varying patterns of insulating material with ventilation regions arranged in one or more two-dimensional (2D) and/or three-dimensional (3D) patterns to provide thermal insulation and air channels that allow for dissipation of heat and the inflow of cooling air. The ventilated heat shield can be used in applications where two surfaces are required to be in very close proximity or contact with each other to reduce the transfer of heat from one surface to the other. An example application for the ventilated heat shield is in a vehicle braking system.