Invention Grant
- Patent Title: Tunable inductors
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Application No.: US16775384Application Date: 2020-01-29
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Publication No.: US10763782B1Publication Date: 2020-09-01
- Inventor: Kun-Hin To , David Gareth Morgan , Jay Paul John , James Albert Kirchgessner
- Applicant: NXP USA, Inc.
- Applicant Address: US TX Austin
- Assignee: NXP USA, INC.
- Current Assignee: NXP USA, INC.
- Current Assignee Address: US TX Austin
- Main IPC: H03B5/18
- IPC: H03B5/18 ; H01F5/00 ; H03B5/08 ; H03B9/14 ; H03B5/20

Abstract:
A technique for tuning a ladder-shaped inductor that achieves a finer tuning resolution by severing one or more shorts, skipping the severing of one or more shorts, and severing one or more subsequent shorts within the ladder-shaped inductor. This technique can be applied to a voltage-controlled oscillator using a differential or single-ended ladder-shaped inductor as part of the resonant circuit. Within an oscillator, such a technique provides for a more precise modulation of the effective inductance of the ladder-shaped inductor, which enables an improved tuning resolution of the operating frequency of the oscillator.
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