A Wide-band Reference-less Bidirectional Continuous-Rate Frequency Detector

被引：0

作者：

Pham Manh Ha ^{[1
]}

Nguyen Huu Tho ^{[2
]}

Hoang Hong Hanh ^{[2
]}

Quang Nguyen-The ^{[2
]}

机构：

[1] Vietnam Telecommun Author, 115 Tran Duy Hung, Hanoi, Vietnam

[2] Le Quy Don Tech Univ, Dept Commun Engn, 236 Hoang Quoc Viet, Hanoi, Vietnam

来源：

PROCEEDINGS OF 2019 3RD INTERNATIONAL CONFERENCE ON RECENT ADVANCES IN SIGNAL PROCESSING, TELECOMMUNICATIONS & COMPUTING (SIGTELCOM 2019) | 2019年

关键词：

Bidirectional frequency detector; reference-less; wide-band; continuous-rate; clock and data recovery; CLOCK;

D O I：

10.1109/sigtelcom.2019.8696267

中图分类号：

TP301 [理论、方法];

学科分类号：

081202 ;

摘要：

This paper presents a wide-band half-rate frequency locked loop (FLL) circuit in 180 nm CMOS process. The bidirectional FLL includes a coarse frequency detector (CFD) and a fine frequency detector (FFD) to automatically detect a change in input data rate, acquires the new frequency without the need for an external reference clock or any programming. A modified CFD is proposed to reduce the frequency acquisition time. The simulation shows the FLL achieves wide lock range of 400Mb/s-to-2.6Gb/s and frequency acquisition time of 1.73 mu s.

引用

页码：25 / 29

页数：5

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