Invention Grant
- Patent Title: Phase continuity technique for frequency synthesis
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Application No.: US15270444Application Date: 2016-09-20
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Publication No.: US09893875B2Publication Date: 2018-02-13
- Inventor: Marco Zanuso , Mohammad Elbadry , Tsai-Pi Hung , Ravi Sridhara , Francesco Gatta , Jingcheng Zhuang
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Qualcomm Incorporated/Seyfarth Shaw LLP
- Main IPC: H03D3/24
- IPC: H03D3/24 ; H04L7/033 ; H04L29/06 ; H04L5/14 ; H03L7/14 ; H03L7/197 ; H04W84/04

Abstract:
A phase discontinuity mitigation implementation within a phased lock loop (PLL) improves throughput of a radio access technology. The throughput is improved by maintaining a phase of the PLL while powering off some devices of the PLL, such as a local oscillator (LO) frequency divider. In one instance, when the PLL is powered down, one or more portions of a delta sigma modulator for the PLL are clocked with a reference clock for the PLL. This implementation maintains phase continuity when the first phase lock loop turns back on.
Public/Granted literature
- US20170338940A1 PHASE CONTINUITY TECHNIQUE FOR FREQUENCY SYNTHESIS Public/Granted day:2017-11-23
Information query
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