Tunable diplexers in three-dimensional (3D) integrated circuits (IC) (3DIC) are disclosed. In one embodiment, the tunable diplexer may be formed by providing one of either a varactor or a variable inductor in the diplexer. The variable nature of the varactor or the variable inductor allows a notch in the diplexer to be tuned so as to select a band stop to eliminate harmonics at a desired frequency as well as control the cutoff frequency of the pass band. By stacking the elements of the diplexer into three dimensions, space is conserved and a variety of varactors and inductors are able to be used.

Claims

19 · 4 independent · depth 2

19 granted claims

›1.independentA three-dimensional (3D) integrated circuit (IC) (3DIC), comprising:na first tier comprising at least one inductor, wherein the at least one inductor …+8

›2.↳ 1The 3DIC of claim 1 wherein the at least one varactor comprises a silicon on glass (SOG) varactor.d2

›3.↳ 1The 3DIC of claim 1 wherein the through substrate via inductor comprises a through glass via (TGV) inductor.d2

›4.↳ 1The 3DIC of claim 1 wherein the at least one inductor and the at least one varactor form a low pass (LP) filter within the tunable diplexer.d2

›5.↳ 1The 3DIC of claim 1 further comprising a second varactor positioned in the second tier coupled to a plurality of second inductors in the first tier, t…d2

›6.↳ 1The 3DIC of claim 1 wherein the at least one varactor is configured to adjust a notch frequency of a filter within the tunable diplexer.d2

›7.↳ 1The 3DIC of claim 1 wherein the through substrate via inductor is configured to control a cutoff frequency for a filter within the tunable diplexer.d2

›8.↳ 1The 3DIC of claim 1 integrated into a semiconductor die.d2

›9.↳ 1The 3DIC of claim 1 integrated into a device selected from the group consisting of a set top box, an entertainment unit, a navigation device, a commun…d2

›10.independentA method of forming a tunable diplexer, comprising:nforming an inductor in a first tier of a three-dimensional (3D) integrated circuit (IC) (3DIC) whe…+4

›15.independentA three-dimensional (3D) integrated circuit (IC) (3DIC), comprising:na first tier comprising at least one through substrate via inductor wherein the a…

›16.independentA tunable diplexer integrated circuit (IC), comprising:na first frequency port configured to transceive first signals having a first frequency band;a …+3

Classifications

1 codes

IPC · International Patent Classification

Section H — Electricity

H03H7/46

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Pendency

3.2 y

1,177 days filing → grant

Office actions

non-final + final

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2 RCE

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Kimberly Glenn

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1 priority documents

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Type	Document	Date
related publication	US 20140327496 A1	6 Nov 2014

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