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US 10,832,848 B2Granted
Low DC resistance and high RF resistance power amplifier choke inductor
AssigneeQUALCOMM Incorporated
InventorsDaeik Daniel Kim, Bonhoon Koo, Babak Nejati
Life of this patent
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Abstract
A multi-layer spiral inductive array includes a first multi-layer spiral inductor with a second layer matching a spiral pattern of a first layer. The multi-layer spiral inductive array also includes a second multi-layer spiral inductor with a third layer matching a spiral pattern of a fourth layer. The second multi-layer spiral inductor is coupled in series with the first multi-layer spiral inductor.
Claims19
A multi-layer spiral inductive array, comprising:
- a first multi-layer spiral inductor having a second layer matching a spiral pattern of a first layer, the first multi-layer spiral inductor comprising a bridge coupling a stack of vias to a center portion of the first multi-layer spiral inductor, a first end of the bridge coupled to the stack of vias and a second end of the bridge coupled to the center portion;
- and
- a second multi-layer spiral inductor having a third layer matching a spiral pattern of a fourth layer, the second multi-layer spiral inductor coupled in series with the first multi-layer spiral inductor, an outermost trace of a second outer layer of the first multi-layer spiral inductor coupled to an outermost trace of an outer layer of the second multi-layer spiral inductor.
A method of fabricating a multi-layer spiral inductive array, comprising:
- fabricating a first multi-layer spiral inductor having a second layer matching a spiral pattern of a first layer, the first multi-layer spiral inductor comprising a bridge coupling a stack of vias to a center portion of the first multi-layer spiral inductor, a first end of the bridge coupled to the stack of vias and a second end of the bridge coupled to the center portion;
- and
- fabricating a second multi-layer spiral inductor having a third layer matching a spiral pattern of a fourth layer, the second multi-layer spiral inductor coupled in series to the first multi-layer spiral inductor, an outermost trace of a second outer layer of the first multi-layer spiral inductor coupled to an outermost trace of an outer layer of the second multi-layer spiral inductor.
An apparatus for inductance, comprising:
- a first means for providing inductance having a second layer matching a spiral pattern of a first layer, the first means for providing inductance comprising a bridge coupling a stack of vias to a center portion of the means for providing inductance, a first end of the bridge coupled to the stack of vias and a second end of the bridge coupled to the center portion;
- and
- a second means for providing inductance having a third layer matching a spiral pattern of a fourth layer, the second means for providing inductance coupled in series with the first means for providing inductance, an outermost trace of a second outer layer of the first means for providing inductance coupled to an outermost trace of an outer layer of the second means for providing inductance.
Dependencies are inferred from the claim text.