Invention Grant
- Patent Title: Inductor with embedded symmetric resonant circuit
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Application No.: US17823756Application Date: 2022-08-31
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Publication No.: US11978578B2Publication Date: 2024-05-07
- Inventor: Hongrui Wang , Saihua Lin , Abbas Komijani , Sohrab Emami-Neyestanak
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: FLETCHER YODER PC
- Main IPC: H01F27/28
- IPC: H01F27/28 ; H01F5/00 ; H01F17/00 ; H01F38/14 ; H03H7/01 ; H03H7/09 ; H03H7/42 ; H03H1/00

Abstract:
Radio frequency filtering circuitry blocks certain frequencies in an outgoing signal so that the signal may be transmitted over a desired frequency. The radio frequency filtering circuitry includes a first inductor having a first coil and a second inductor coupled to and disposed within the first coil. The second inductor has a second coil and a third coil symmetrical to the second coil. When current is applied to the radio frequency filtering circuitry, the current in the second coil causes a first induced current in the first coil and the current in the third coil causes a second induced current in the first coil, wherein the second induced current is approximately equal in magnitude and opposite in direction to the first induced current. As such, the second induced current may compensate for the first induced current.
Public/Granted literature
- US20220415559A1 INDUCTOR WITH EMBEDDED SYMMETRIC RESONANT CIRCUIT Public/Granted day:2022-12-29
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