System for establishing communication with a mobile device server
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Abstract
An embodiment of the present invention provides an apparatus, comprising an RF matching network connected to at least one RF input port and at least one RF output port and including one or more voltage or current controlled variable reactive elements; a voltage detector connected to the at least one RF output port via a variable voltage divider to determine the voltage at the at least one RF output port and provide voltage information to a controller that controls a bias driving circuit which provides voltage or current bias to the RF matching network; a variable voltage divider connected to the voltage detector and implemented using a multi-pole RF switch to select one of a plurality of different resistance ratios to improve the dynamic range of the apparatus; and wherein the RF matching network is adapted to maximize RF power transferred from the at least one RF input port to the at least one RF output port by varying the voltage or current to the voltage or current controlled variable reactive elements to maximize the RF voltage at the at least one RF output port.
163 Citations
36 Claims
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1-16. -16. (canceled)
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17. An apparatus, comprising a controller to:
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obtain a voltage at an input or output of an RF matching network, wherein the RF matching network comprises one or more variable reactive elements; and adapt the matching network according to the obtained voltage to increase an RF voltage at the input or output by varying the one or more variable reactive elements, wherein the variable reactive elements comprise at least one of a semiconductor varactor, a micro-electro-mechanical systems (MEMS) varactor, a MEMS switched reactive element, a semiconductor switched reactive element, or a ferroelectric capacitor. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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24. An apparatus, comprising a controller to:
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obtain a voltage using a variable voltage divider, the voltage being obtained at an input or output of an RF matching network, wherein the RF matching network comprises one or more variable reactive elements; and adapt the matching network according to the obtained voltage to increase an RF voltage at the input or output by varying the one or more variable reactive elements. - View Dependent Claims (25, 26, 27, 28, 29, 30)
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31. A system comprising:
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an RF matching circuit configured for coupling to an RF antenna, the RF matching network comprising one or more variable reactive elements; a voltage detector to detect a voltage at an input or output of the RF matching network; and a controller coupled with the RF matching circuit and the voltage detector, the controller being operable to vary the one or more variable reactive elements according to the detected voltage to increase an RF voltage at the input or output. - View Dependent Claims (32, 33, 34, 35, 36)
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Specification