Invention Grant
- Patent Title: Voltage controlled oscillator and phase locked loop including the same
- Patent Title (中): 压控振荡器和锁相环包括相同的
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Application No.: US14504875Application Date: 2014-10-02
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Publication No.: US09172328B2Publication Date: 2015-10-27
- Inventor: Sang-Hun Lee , Jong-Shin Shin
- Applicant: Samsung Electronics Co., Ltd.
- Applicant Address: KR Gyeonggi-do
- Assignee: SAMSUNG ELECTRONICS CO., LTD.
- Current Assignee: SAMSUNG ELECTRONICS CO., LTD.
- Current Assignee Address: KR Gyeonggi-do
- Agency: Harness, Dickey & Pierce, P.L.C.
- Priority: KR10-2013-0161021 20131223
- Main IPC: H03L7/06
- IPC: H03L7/06 ; H03B7/06 ; H03L7/089 ; H03L7/099
Abstract:
A voltage controlled oscillator (VCO) includes an oscillation frequency signal generation circuit and a transconductance control circuit. The oscillation frequency signal generation circuit has a first transconductance and generates a first oscillation frequency signal and a second oscillation frequency signal based on a voltage control signal and a power supply voltage. The first and second oscillation frequency signals are a pair of differential signals. The oscillation frequency signal generation circuit is configured to output the first oscillation frequency signal from a first output node. The oscillation frequency signal generation circuit is configured to output the second oscillation frequency signal from a second output node. The transconductance control circuit is connected to the first and second output nodes and has a second transconductance. The transconductance control circuit is configured to adjust the second transconductance based on a digital control signal.
Public/Granted literature
- US20150180414A1 VOLTAGE CONTROLLED OSCILLATOR AND PHASE LOCKED LOOP INCLUDING THE SAME Public/Granted day:2015-06-25
Information query
