Invention Grant
- Patent Title: Phase locked loop (PLL) based frequency sweep generator
- Patent Title (中): 基于锁相环（PLL）的频率扫描发生器
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Application No.: US13229449Application Date: 2011-09-09
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Publication No.: US08638139B2Publication Date: 2014-01-28
- Inventor: Michael Keaveney , Patrick Walsh
- Applicant: Michael Keaveney , Patrick Walsh
- Applicant Address: US MA Norwood
- Assignee: Analog Devices, Inc.
- Current Assignee: Analog Devices, Inc.
- Current Assignee Address: US MA Norwood
- Agency: Knobbe Martens Olson & Bear LLP
- Main IPC: H03L7/06
- IPC: H03L7/06
Abstract:
A phase locked loop (PLL) based frequency sweep generator and methods for performing a frequency sweep are disclosed. In one implementation, the frequency sweep generator includes a circuit configured to generate a signal having a saw-tooth wave frequency ramp. The saw-tooth wave frequency ramp includes a rising portion and a resetting portion. The resetting portion has a shorter duration than the rising portion and includes a plurality of steps for decrementing the frequency of the signal.
Public/Granted literature
- US20120062297A1 PHASE LOCKED LOOP (PLL) BASED FREQUENCY SWEEP GENERATOR Public/Granted day:2012-03-15
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