Invention Grant
- Patent Title: Adjustable capacitor, digitally controlled oscillator, and all-digital phase locked loop
- Patent Title (中): 可调电容，数控振荡器和全数字锁相环
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Application No.: US12630885Application Date: 2009-12-04
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Publication No.: US08106714B2Publication Date: 2012-01-31
- Inventor: Do-hwan Oh , Kyo-Jin Choo , Deog-Kyoon Jeong
- Applicant: Do-hwan Oh , Kyo-Jin Choo , Deog-Kyoon Jeong
- Applicant Address: KR Suwon-si KR Seoul
- Assignee: Samsung Electronics Co., Ltd.,Seoul National University R&DB Foundation
- Current Assignee: Samsung Electronics Co., Ltd.,Seoul National University R&DB Foundation
- Current Assignee Address: KR Suwon-si KR Seoul
- Agency: Sughrue Mion, PLLC
- Priority: KR10-2009-0076788 20090819
- Main IPC: H03L7/02
- IPC: H03L7/02 ; H03B5/12
Abstract:
An adjustable capacitor is provided including a capacitor unit including a plurality of capacitor groups aligned in a matrix format and a switch unit to adjust capacitance by connecting the plurality of capacitor groups in parallel according to a selection signal of a column and row of the matrix. Accordingly, the adjustable capacitor may be realized of a small size but with a high capacitance change rate.
Public/Granted literature
- US20100156550A1 ADJUSTABLE CAPACITOR, DIGITALLY CONTROLLED OSCILLATOR, AND ALL-DIGITAL PHASE LOCKED LOOP Public/Granted day:2010-06-24
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