Switchable inductor network for wideband circuits
First Claim
1. An apparatus comprising:
- a switchable inductor network comprising;
a first coil including an inner coil and an outer coil, the first coil including a first connection point and a second connection point, the first coil disposed along at least one axis at a first position;
a second coil including a first inductive segment and a second inductive segment, the first inductive segment connected to the first connection point of the first coil, and the second inductive segment connected to the second connection point of the first coil;
the second coil disposed along the at least one axis at a second position, the second position different from the first position; and
a switch connected between the first inductive segment of the second coil and the second inductive segment of the second coil, the switch configured to change, in response to a control signal, an inductance of the switchable inductor network by selectively coupling the first inductive segment of the second coil to the second inductive segment of the second coil to thereby connect the second coil across a portion of the first coil.
1 Assignment
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Accused Products
Abstract
The present disclosure describes aspects of a switchable inductor network for wideband circuits. In some aspects, the switchable inductor network provides selectable inductance. The switchable inductor network includes a first coil and a second coil that includes a first inductive segment and a second inductive segment. Connection points of the second coil connect the second coil across a portion of the first coil. The switchable inductor network also includes a switch connected between the first inductive segment and the second inductive segment of the second coil. The switch is configured to change the selectable inductance of the switchable inductor network by selectively coupling the first inductive segment to the second inductive segment of the second coil in response to a control signal.
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Citations
36 Claims
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1. An apparatus comprising:
a switchable inductor network comprising; a first coil including an inner coil and an outer coil, the first coil including a first connection point and a second connection point, the first coil disposed along at least one axis at a first position; a second coil including a first inductive segment and a second inductive segment, the first inductive segment connected to the first connection point of the first coil, and the second inductive segment connected to the second connection point of the first coil;
the second coil disposed along the at least one axis at a second position, the second position different from the first position; anda switch connected between the first inductive segment of the second coil and the second inductive segment of the second coil, the switch configured to change, in response to a control signal, an inductance of the switchable inductor network by selectively coupling the first inductive segment of the second coil to the second inductive segment of the second coil to thereby connect the second coil across a portion of the first coil. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A switchable inductor network, the switchable inductor network comprising:
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a first coil including an inner coil and an outer coil, the first coil including a first connection point and a second connection point, the first coil disposed along at least one axis at a first position; a second coil including a first inductive segment and a second inductive segment, the first inductive segment connected to the first connection point of the first coil, and the second inductive segment connected to the second connection point of the first coil;
the second coil disposed along the at least one axis at a second position, the second position different from the first position; andmeans for selecting an inductance of the switchable inductor network in response to a control signal by selectively coupling the first inductive segment of the second coil to the second inductive segment of the second coil to thereby connect the second coil across a portion of the first coil. - View Dependent Claims (21, 22, 23, 24, 25, 26)
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27. A method for operating a switchable inductor network, the method comprising:
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propagating a current through a first coil including an inner coil and an outer coil, the first coil including a first connection point and a second connection point, the first coil disposed along at least one axis at a first position; activating, responsive to a control signal, a switch to selectively couple a first inductive segment of a second coil to a second inductive segment of the second coil, the first inductive segment connected to the first connection point of the first coil, and the second inductive segment connected to the second connection point of the first coil;
the second coil disposed along the at least one axis at a second position, the second position different from the first position; andbased on the activating, propagating another current through the first coil and the second coil via the first connection point and the second connection point connecting the second coil across a portion of the first coil. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34)
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35. A voltage-controlled oscillator (VCO) circuit including a switchable inductor network, the switchable inductor network comprising:
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a first coil having terminals coupled to a resonant tank circuit of the VCO, the first coil including an inner coil and an outer coil, the first coil including a first connection point and a second connection point, the first coil disposed along at least one axis at a first position; a second coil including a first inductive segment and a second inductive segment, the first inductive segment connected to the first connection point of the first coil, and the second inductive segment connected to the second connection point of the first coil;
the second coil disposed along the at least one axis at a second position, the second position different from the first position; anda switch connected between the first inductive segment of the second coil and the second inductive segment of the second coil, the switch configured to selectively have a closed-state or an open-state, an inductance of the second coil being included in an inductance value of the switchable inductor network in the closed-state in which the second coil is connected across a portion of the first coil, and the inductance of the second coil being excluded from the inductance value of the switchable inductor network in the open-state. - View Dependent Claims (36)
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Specification