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US 2022/0415789 A1Published application
Differential tuned inductor devices and methods thereof
AssigneeIntrinsix Corporation
InventorsKathiravan KRISHNAMURTHI, Finbarr MCGRATH
Life of this patent
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Abstract
A differential tuned inductor and a multilayer tunable transformer for an integrated circuit device for microwave and RF applications are disclosed. The tunable inductor can be used in differential artificial delay lines to achieve delay tuning while preserving impedance matching. The tunable transformer can also be used for mixer drives to achieve wider operational performance.
Claims20
A tunable series differential inductor section device comprising:
- a first series two port spiral coil wound with a number of turns;
- a second series two port spiral coil coupled to the first series two port spiral coil, wherein the second series two port spiral coil is wound with respect to the first series two port spiral coil with an outer turn of the second series two port spiral coil positioned proximal to an inner turn of the first series two port spiral coil such that the inner turn of second series two port spiral coil ends closer to the outer turn of the first series two port spiral coil;
- and
- a tertiary pair of coils wound vertically below the first and second series two port spiral coils such that the tertiary pair of coils are coupled evenly to the first and second series two port spiral coils, wherein the tertiary pair of coils are connected to a switch having a first switch position to electrically open the tertiary pair of coils and a second switch position to electrically close the tertiary pair of coils to reduce differential inductance of the coupled first and second series two port spiral coils;
- and
- a tap provided in the tertiary pair of coils to bias the switch.
3 more elements
A method of making tunable series differential inductor section device comprising:
- providing a first series two port spiral coil wound with a number of turns;
- coupling a second series two port spiral coil coupled to the first series two port spiral coil, wherein the second series two port spiral coil is wound with respect to the first series two port spiral coil with an outer turn of the second series two port spiral coil positioned proximal to an inner turn of the first series two port spiral coil such that the inner turn of second series two port spiral coil ends closer to the outer turn of the first series two port spiral coil;
- and
- providing a tertiary pair of coils wound vertically below the first and second series two port spiral coils such that the tertiary pair of coils are coupled evenly to the first and second series two port spiral coils, wherein the tertiary pair of coils are connected to a switch having a first switch position to electrically open the tertiary pair of coils and a second switch position to electrically close the tertiary pair of coils to reduce differential inductance of the coupled first and second series two port spiral coils;
- and
- providing a tap in the tertiary pair of coils to bias the switch.
3 more elements
An electronically tunable transformer circuit device comprising:
- a first layer comprising two pairs of magnetically coupled inductors each comprising a primary inductor and a secondary inductor, wherein terminals of the primary inductors and the secondary conductors are connected together to provide a five-port configuration;
- a tap located at a mid-point of a connection between the two primary inductors;
- and
- a second layer located beneath the first layer, the second layer comprising a pair of tertiary coils having switches configured to open and close the pair of tertiary coils to effect tuning of the transformer.
1 more element
Dependencies are inferred from the claim text.