Invention Grant
- Patent Title: Circuit and method for controlling charge injection in radio frequency switches
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Application No.: US16921790Application Date: 2020-07-06
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Publication No.: US11196414B2Publication Date: 2021-12-07
- Inventor: Alexander Dribinsky , Tae Youn Kim , Dylan J. Kelly , Christopher N. Brindle
- Applicant: pSemi Corporation
- Applicant Address: US CA San Diego
- Assignee: pSemi Corporation
- Current Assignee: pSemi Corporation
- Current Assignee Address: US CA San Diego
- Agency: Haynes and Boone, LLP
- Main IPC: H03K17/16
- IPC: H03K17/16 ; H03K17/10 ; H03K17/284 ; H03K17/687 ; H03K17/689 ; H03K17/04 ; H03K17/06 ; H03K17/08

Abstract:
A circuit and method for controlling charge injection in a circuit are disclosed. In one embodiment, the circuit and method are employed in a semiconductor-on-insulator (SOI) Radio Frequency (RF) switch. In one embodiment, an SOI RF switch comprises a plurality of switching transistors coupled in series, referred to as “stacked” transistors, and implemented as a monolithic integrated circuit on an SOI substrate. Charge injection control elements are coupled to receive injected charge from resistively-isolated nodes located between the switching transistors, and to convey the injected charge to at least one node that is not resistively-isolated. In one embodiment, the charge injection control elements comprise resistors. In another embodiment, the charge injection control elements comprise transistors. A method for controlling charge injection in a switch circuit is disclosed whereby injected charge is generated at resistively-isolated nodes between series coupled switching transistors, and the injected charge is conveyed to at least one node of the switch circuit that is not resistively-isolated.
Public/Granted literature
- US20210152170A1 CIRCUIT AND METHOD FOR CONTROLLING CHARGE INJECTION IN RADIO FREQUENCY SWITCHES Public/Granted day:2021-05-20
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