Abstract:
A mobile communication device (10,160) with a base portion (114) and a parallel slider portion (112) connected through a slide assembly. A transceiver (132,134) is housed in one of the base portion (114) and the slider portion (112), and an RF antenna (116,118) is housed in the other of the base portion (114) and the slider portion (112). A coiled cable (140,162) has one end connected to the RF antenna (116,118) and its other end connected to the transceiver (132,134) for communicating RF-level signals between the antenna (116,118) and transceiver (132,134).
Abstract:
A mobile wireless communications device may include a plurality of antennas, a plurality of wireless transceivers, and signal processing circuitry. The device may further include a controller for selectively switching the signal processing circuitry to a desired one of the wireless transceivers, and for selectively switching a desired one of the antennas to the desired one of the wireless transceivers. Moreover, the controller may also be for selectively connecting and disconnecting the at least one other one of the antennas to an unused one of the wireless transceivers.
Abstract:
A mobile wireless communications device may include a portable housing, a dielectric substrate carried by the portable housing having a front side facing toward a user and a back side opposite the front side, and a ground plane carried by the dielectric substrate. The device may further include at least one circuit carried by the dielectric substrate, and an antenna carried by the dielectric substrate adjacent an end thereof and electrically connected to the at least one circuit. A ground patch may be adjacent the front side of the dielectric substrate that is electrically connected to the ground plane and spaced apart from and at least partially overlapping the antenna.
Abstract:
Embodiments relate to a system for conducting hearing aid compatibility testing of a mobile communication device (150). The system comprises: a simulated hand (160) for supporting the mobile communication device during the testing; a probe (120); and a processor. The processor is configured to cause the probe to be positioned in a sequence of positions in proximity to the mobile communication device relative to an audio output component of the mobile communication device during the testing and to determine a field strength of a field radiated by the mobile communication device at the sequence of positions based on an output of the probe at each position.
Abstract:
A multiple-element antenna for a multi-band wireless mobile communication device is provided. The multiple-element antenna includes a first antenna element, a second antenna element positioned adjacent the first antenna element, and a parasitic coupler positioned adjacent the first antenna element and the second antenna element. In one embodiment, the first and second antenna elements have respective first and second operating frequency bands, and electromagnetically couple with each other and with the parasitic coupler when the multiple-element antenna is operating in the first or second operating frequency band. The first and second antenna elements are configured to be connected to first and second transceivers in a wireless mobile communication device in an alternate embodiment.
Abstract:
A mobile wireless communications device includes a housing and circuit board carried by the housing and having RF circuitry comprising at least one RF component and plurality of other components mounted on the circuit board. An RF metal shield is secured to the circuit board and surrounds and isolates the at least one RF component and plurality of other components within the RF metal shield. An RF absorber is positioned adjacent an area of the RF component that radiates energy to aid in reducing energy radiated from the RF component into the RF metal shield.
Abstract:
A balanced dipole antenna (100) has a coaxial cable connected between a load or source and the left (101) and right (102) dipole arms to substantially eliminate common mode current and radiative coupling between the coaxial cable and the left and right dipole arms. The connection between the source/load coaxial cable and the left and right dipole arms is a symmetric balun (110) having a center branch that is an extension of the source/load coaxial cable, and left and right stubs. When the stubs are segments of coaxial cable, the outer conductors (105,125) of the left and right stubs of the symmetric balun are respectively coupled to the left and right dipole arms (101,102), and one of the inner conductors (106) of the left and right stubs is connected to the inner conductor of the center branch (116), while the other of the inner conductor (126) of the left and right stubs is connected to the outer conductor of the center branch (115). When the stubs are metallic, the inner conductor of the center branch is electrically connected to one of the left and right dipole arms, while the outer conductor of the center branch is electrically connected to the other of the left and right dipole arms. A sliding bar (108) at the base of the stubs electrically connects the outer conductors (105,125) of the left and right stubs and the center branch (115).
Abstract:
A balanced dipole antenna has a coaxial cable connected between a load or source and the left and right dipole arms to substantially eliminate common mode current and radiative coupling between the coaxial cable and the left and right dipole arms. The connection between the source/load coaxial cable and the left and right dipole arms is a symmetric balun having a center branch that is an extension of the source/load coaxial cable, and left and right stubs. When the stubs are segments of coaxial cable, the outer conductors of the left and right stubs of the symmetric balun are respectively coupled to the left and right dipole arms, and one of the inner conductors of the left and right stubs is connected to the inner conductor of the center branch, while the other of the inner conductor of the left and right stubs is connected to the outer conductor of the center branch. When the stubs are metallic, the inner conductor of the center branch is electrically connected to one of the left and right dipole arms, while the outer conductor of the center branch is electrically connected to the other of the left and right dipole arms. A sliding bar at the base of the stubs electrically connects the outer conductors of the left and right stubs and the center branch.