ANTENNA STRUCTURES AND ISOLATION CHAMBERS OF A MULTI-RADIO, MULTI-CHANNEL (MRMC) MESH NETWORK DEVICE

    公开(公告)号:US20190020713A1

    公开(公告)日:2019-01-17

    申请号:US15650038

    申请日:2017-07-14

    Abstract: An electronic device includes a metal housing having a height greater than a width, four sides that form an inner chamber in a center thereof. Four sidewalls extend from a first back wall form a first chamber located at a first of the four sides. Four sidewalls extend from a second back wall form a second chamber located at a second of the four sides. A first antenna is disposed in the first chamber. A second antenna is disposed in the second chamber. A circuit board is disposed within the inner chamber and oriented longitudinally from a bottom of the inner chamber. A first radio is disposed on the circuit board and coupled to the first antenna. A second radio is disposed on the circuit board and coupled to the second antenna, such that the second antenna is electrically isolated from the first antenna.

    Bi-directional radio frequency front-end (RFFE)

    公开(公告)号:US09991914B1

    公开(公告)日:2018-06-05

    申请号:US15595538

    申请日:2017-05-15

    CPC classification number: H04B1/0475 H04B1/0092 H04W52/52 H04W84/18

    Abstract: Technology for a bi-directional radio frequency front-end (RFFE) architecture with high selectivity performance is described. One RFFE has a first mixer that receives a LO signal from the LO circuit and a transmit (TX) signal, having a first frequency, from a transmitter and produces a down-converted TX signal for channel bandwidth filtering, the TX signal having a second frequency that is lower than the first frequency. A programmable filter circuit, in response to a selection signal, filters the down-converted TX signal according to a selected channel bandwidth. The second mixer receives the LO signal from the LO circuit and a channel-filtered TX signal from the programmable filter circuit and produces an up-converted TX signal having the first frequency. The power amplifier amplifies the up-converted TX signal to produce an output TX signal to cause an antenna to radiate electromagnetic energy in the selected channel bandwidth.

    Co-located, multi-element antenna structure

    公开(公告)号:US09786994B1

    公开(公告)日:2017-10-10

    申请号:US14221136

    申请日:2014-03-20

    Abstract: Antenna structures and methods of operating the same of an electronic device are described. One apparatus includes a first radio frequency (RF) feed, a second RF feed and an antenna structure. The antenna structure includes a ground plane, a first antenna element coupled to the first RF feed, a second antenna element coupled to the second RF feed and coupled to the ground plane at a first grounding point located at a distal end of the second antenna element. The first antenna element operates as a first directly-fed element and the second antenna element operates as a first parasitic ground element when RF signals in a first frequency range are applied to the first RF feed. The second antenna element operates as a second directly-fed element when RF signals in a second frequency range are applied to the second RF feed, the second frequency range being higher than the first frequency range. The first antenna element is grounded by the RF short circuit when the RF signals in the second frequency range are applied to the second RF feed.

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