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Methods and apparatuses for use in tuning reactance in a circuit device

  • US 9,806,694 B2
  • Filed: 10/14/2015
  • Issued: 10/31/2017
  • Est. Priority Date: 02/28/2008
  • Status: Active Grant
First Claim
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1. A tunable inductor, comprising:

  • a first RF terminal;

    a second RF terminal;

    a plurality of inductive elements connected therebetween, wherein each inductive element is an inductor or a portion thereof;

    a plurality of switches coupled with the plurality of inductive elements, wherein each switch of the plurality of switches is configured to receive a control signal, and wherein the control signal controls inductance applied between the first RF terminal and the second RF terminal by turning on or off switches in the plurality of switches; and

    at least one bypass switch comprising a plurality of series connected switches, wherein the at least one bypass switch is connected to a bypass node within the tunable inductor via a first terminal of the at least one bypass switch and to the second RF terminal via a second terminal of the at least one bypass switch, the at least one bypass switch being configured to selectively exclude, via a first mode of operation of the at least one bypass switch, and to include, via a second mode of operation of the at least one bypass switch, at least two inductive elements of the plurality of inductive elements and corresponding connected switches of the plurality of the series connected switches in a conduction path between the first RF terminal and the second RF terminal,wherein at least one inductive element in the plurality of inductive elements is coupled with at least two switches from among the plurality of switches, the at least two switches being serially connected therebetween.

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