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US 9,813,033 B2Granted
System and method for inductor isolation
AssigneeInnophase, Inc.
InventorsNicolo Testi, Yang Xu
Life of this patent
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Abstract
An inductor isolation apparatus and method to reduce interaction between inductors on an integrated circuit.
Claims20
An apparatus comprising:
- an integrated circuit device comprising at least two frequency selective circuits, where each frequency selective circuit comprises at least one inductor element;
- and
- a plurality of metallization walls, wherein each metallization wall encloses a respective inductor element of the at least one inductor element and reduces mutual coupling between the inductor elements of the at least two frequency selective circuits.
A method comprising:
- adjusting the gain of a variable gain amplifier stage;
- adjusting a resonant frequency and a quality factor Q of a tunable bandpass filter connected as a load to the variable gain amplifier stage, wherein the bandpass filter includes an inductor that is surrounded by a metallization wall, a cross-coupled transistor pair, and at least one cross-coupled compensation transistor pair;
- and,
- biasing the at least one cross-coupled compensation transistor pair in a subthreshold region.
1 more element
A method comprising:
- adjusting, to a first frequency, a resonant frequency of a first low noise amplifier stage having a first variable gain amplifier stage and a first tunable bandpass filter, wherein the first tunable bandpass filter comprises a first inductor surrounded by a first metallization wall;
- adjusting, to a second frequency offset from the first frequency, a resonant frequency of a second low noise amplifier stage having a second variable gain amplifier stage and a second tunable bandpass filter, wherein the second tunable bandpass filter comprises a second inductor surrounded by a second metallization wall;
- and
- biasing cross-coupled compensation transistor pairs in each of the first tunable bandpass filter and second tunable bandpass filter in a sub-threshold region to provide a compensation transconductance in the presence of large signals.
1 more element
Dependencies are inferred from the claim text.