Invention Grant
- Patent Title: Selective variable attenuation circuitry and associated methods
- Patent Title (中): 选择性可变衰减电路及相关方法
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Application No.: US13466735Application Date: 2012-05-08
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Publication No.: US09054672B2Publication Date: 2015-06-09
- Inventor: Michael S. Johnson
- Applicant: Michael S. Johnson
- Applicant Address: US TX Austin
- Assignee: Silicon Laboratories Inc.
- Current Assignee: Silicon Laboratories Inc.
- Current Assignee Address: US TX Austin
- Agency: Egan, Peterman & Enders LLP.
- Main IPC: H01P1/22
- IPC: H01P1/22 ; H03H7/24

Abstract:
Variable capacitive attenuation circuitry and associated methods are disclosed that may be implemented to employ a plurality of multi-purpose capacitors that may be selectably coupled together in different configurations to form a capacitive divider having different respective attenuation properties. In a particular embodiment, each of the capacitors of the disclosed capacitive attenuation circuitry may be selectably coupled to an RF reference as either a shunt capacitor or coupled in series between an RF signal input and an attenuated RF signal output as a series capacitor, thus forming a capacitive divider having selected attenuation properties. The disclosed variable capacitive attenuation circuitry may be advantageously utilized to attenuate an input RF signal and to provide a resulting attenuated RF output signal, for example, in the front end of RF receiver circuitry.
Public/Granted literature
- US20130300523A1 SELECTIVE VARIABLE ATTENUATION CIRCUITRY AND ASSOCIATED METHODS Public/Granted day:2013-11-14
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