Invention Grant
- Patent Title: Analog loop filter systems, apparatus, and methods
- Patent Title (中): 模拟环路滤波系统,装置和方法
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Application No.: US13450709Application Date: 2012-04-19
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Publication No.: US09257997B2Publication Date: 2016-02-09
- Inventor: Eric Vandel
- Applicant: Eric Vandel
- Applicant Address: US CA Camarillo
- Assignee: SEMTECH CORPORATION
- Current Assignee: SEMTECH CORPORATION
- Current Assignee Address: US CA Camarillo
- Agency: Patent Law Group: Atkins and Associates, P.C.
- Agent Robert D. Atkins
- Main IPC: H03L7/06
- IPC: H03L7/06 ; H03L7/081 ; H03L7/099 ; H03H11/48

Abstract:
Described herein is a distributed analog loop filter that can be employed in a phase locked loop or a delay locked loop. A circuit block of the distributed analog loop filter includes at least two parallel equivalent circuit elements. The parallel equivalent circuit elements each have an input line. The input lines for each of the parallel equivalent circuit elements are activated sequentially, one after the other. The parallel equivalent circuit elements have sequentially produced outputs that are also activated sequentially, one after another. The parallel equivalent circuit elements extend the tuning range of distributed analog filter while reducing noise associated with the distributed analog filter.
Public/Granted literature
- US20130278329A1 ANALOG LOOP FILTER SYSTEMS, APPARATUS, AND METHODS Public/Granted day:2013-10-24
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