Spiral inductor
First Claim
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1. A spiral inductor, comprising:
- a first spiral conductive trace with at least one turn, wherein the first spiral conductive trace comprises an outer end and an inner end;
a second spiral conductive trace, comprising a first end and a second end, surrounding a portion of the outermost turn of the first spiral conductive trace, wherein the second spiral conductive trace does not extend into a region surrounded by the first spiral conductive trace and no other spiral conductive trace is formed between the first spiral conductive trace and the second spiral conductive trace;
a connector, electrically connecting the inner end and the first end, wherein the first spiral conductive trace, except for the inner end, comprises a substantially uniform width W1, and the inner end comprises a width W2 greater than W1 and wherein the connector comprises the substantially uniform width W2;
a first I/O port, electrically connected to the outer end and extending farther away from the first spiral conductive trace; and
a second I/O port, electrically connected to the second end and extending farther away from the second spiral conductive trace, wherein the first I/O port and the second I/O port are between the inner end and first end.
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Abstract
A spiral inductor is provided. The spiral inductor includes a first spiral conductive trace with at least one turn, a second spiral conductive trace, and a connector. The first spiral conductive trace comprises an outer end and an inner end. The second spiral conductive trace surrounds a portion of the outermost turn of the first spiral conductive trace, and comprises a first end and a second end. The connector electrically connects to the inner end and the first end.
30 Citations
20 Claims
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1. A spiral inductor, comprising:
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a first spiral conductive trace with at least one turn, wherein the first spiral conductive trace comprises an outer end and an inner end; a second spiral conductive trace, comprising a first end and a second end, surrounding a portion of the outermost turn of the first spiral conductive trace, wherein the second spiral conductive trace does not extend into a region surrounded by the first spiral conductive trace and no other spiral conductive trace is formed between the first spiral conductive trace and the second spiral conductive trace; a connector, electrically connecting the inner end and the first end, wherein the first spiral conductive trace, except for the inner end, comprises a substantially uniform width W1, and the inner end comprises a width W2 greater than W1 and wherein the connector comprises the substantially uniform width W2; a first I/O port, electrically connected to the outer end and extending farther away from the first spiral conductive trace; and a second I/O port, electrically connected to the second end and extending farther away from the second spiral conductive trace, wherein the first I/O port and the second I/O port are between the inner end and first end. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A spiral inductor, comprising:
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an insulating layer, disposed overlying a substrate; a first spiral conductive trace, with at least one turn, disposed in the insulating layer, wherein the first spiral conductive trace comprises an outer end and an inner end; a second spiral conductive trace, comprising a first end and a second end, disposed in the insulating layer and surrounding a portion of the outermost turn of the first spiral conductive trace, and the first spiral conductive trace and the second spiral conductive trace belong to one wiring layer, wherein the second spiral conductive trace does not extend into a region surrounded by the first spiral conductive trace and no other spiral conductive trace is formed between the first spiral conductive trace and the second spiral conductive trace; a first conductor, electrically connected to the inner end and protruding from the first spiral conductive trace; a second conductor, electrically connected to the first end and protruding from the second spiral conductive trace in a direction substantially the same as a protruding direction of the first conductor; a connection element, electrically connecting the first conductor and the second conductor, wherein the connection element and the first spiral conductive trace belong to different wiring layers, wherein the first spiral conductive trace, except for the inner end, comprises a substantially uniform width W1, and the inner end comprises a width W2 greater than W1 and wherein the connector element comprises the substantially uniform width W2; a first I/O port, electrically connected to the outer end and extending farther away from the first spiral conductive trace; and a second I/O port, electrically connected to the second end and extending farther away from the second spiral conductive trace, wherein the first I/O port and the second I/O port are between the inner end and first end. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An inductor, comprising:
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a first spiral conductive comprising an outer end and an inner end; a second spiral conductive trace comprising a first end and a second end, the second end surrounding substantially all of the outermost turn of the first spiral conductive trace such that the second spiral conductive trace does not overlap an I/O port connected to the outer end of the first spiral conductive trace, wherein the second spiral conductive trace does not extend into a region surrounded by the first spiral conductive trace; a connector, electrically connecting the inner end and the first end, wherein the first spiral conductive trace, except for the inner end, comprises a substantially uniform width W1, and the inner end comprises a width W2 greater than W1 and wherein the connector comprises the substantially uniform width W2; a first I/O port, electrically connected to the outer end and extending farther away from the first spiral conductive trace; and a second I/O port, electrically connected to the second end and extending farther away from the second spiral conductive trace, wherein the first I/O port and the second I/O port are between the inner end and first end. - View Dependent Claims (19, 20)
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Specification