Invention Grant
US09485084B2 Linearity of phase interpolators by combining current coding and size coding
有权
通过组合当前编码和大小编码来实现相位内插器的线性度
- Patent Title: Linearity of phase interpolators by combining current coding and size coding
- Patent Title (中): 通过组合当前编码和大小编码来实现相位内插器的线性度
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Application No.: US14300127Application Date: 2014-06-09
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Publication No.: US09485084B2Publication Date: 2016-11-01
- Inventor: Li Sun , Zhi Zhu , Xiaohua Kong , Kenneth Luis Arcudia , Zhiqin Chen
- Applicant: Qualcomm Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Procopio, Cory, Hargreaves & Savitch LLC
- Main IPC: H04L7/033
- IPC: H04L7/033 ; H03L7/099 ; H03K5/135 ; H03K5/00

Abstract:
A phase interpolator, including: a first portion including a first plurality of branches and a plurality of tail current sources, each branch including a differential pair of transistors, source terminals of the differential pair of transistors connect to form a source node, wherein each tail current source couples to one of the source nodes, and wherein the differential pair of transistors and the corresponding tail current source are configured in a current coding scheme; a second portion including a second plurality of branches and a fixed current source coupled to the second plurality of branches, each branch of the second plurality of branches including a second plurality of differential pairs of transistors and a plurality of switches configured in a size coding scheme; wherein the first portion and the second portion are coupled to each other and to a pair of load resistors.
Public/Granted literature
- US20150358148A1 Linearity of Phase Interpolators by Combining Current Coding and Size Coding Public/Granted day:2015-12-10
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