Invention Grant
- Patent Title: Apparatus and methods for capacitive load reduction in a mobile device
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Application No.: US15372826Application Date: 2016-12-08
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Publication No.: US09859846B2Publication Date: 2018-01-02
- Inventor: Sabah Khesbak
- Applicant: SKYWORKS SOLUTIONS, INC.
- Applicant Address: US MA Woburn
- Assignee: SKYWORKS SOLUTIONS, INC.
- Current Assignee: SKYWORKS SOLUTIONS, INC.
- Current Assignee Address: US MA Woburn
- Agency: Knobbe Martens Olson & Bear LLP
- Main IPC: H03F3/68
- IPC: H03F3/68 ; H03F1/02 ; H03F1/56 ; H03F3/19 ; H03F3/24 ; H03F3/72 ; H03F3/193 ; H03F3/21 ; H03F3/195 ; H03F1/30 ; H03F1/07

Abstract:
Apparatus and methods for capacitive load reduction are disclosed. In one embodiment, a mobile device includes a supply control circuit that controls a voltage of a supply network, a plurality of radio frequency circuits that receive power from the supply network and are selectively enabled by a plurality of enable signals, a plurality of switchable capacitors electrically connected to the supply network, a plurality of field-effect transistors operatively associated with the plurality of switchable capacitors, and a bias control circuit that generates a plurality of control signals that bias the plurality of field-effect transistors based on a state of the plurality of enable signals. Each of the plurality of control signals are operable to selectively bias a corresponding one of the plurality of field-effect transistors in a cutoff mode to provide high impedance or as a dampening resistor to suppress oscillations.
Public/Granted literature
- US20170093340A1 APPARATUS AND METHODS FOR CAPACITIVE LOAD REDUCTION IN A MOBILE DEVICE Public/Granted day:2017-03-30
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