A 9.8-11.5-GHz quadrature ring oscillator for optical receivers

This paper describes a quadrature ring oscillator that is tunable from 9.8 to 11.5 GHz in a 30-GHz f/sub T/ BiCMOS technology. The ring oscillator can be used in advanced data clock recovery architectures in optical receivers. The circuit implementation of the oscillator uses transistors as active i...

Full description

Saved in:
Bibliographic Details
Published in:IEEE journal of solid-state circuits 2002-03, Vol.37 (3), p.438-442
Main Authors: van der Tang, J.D., Kasperkovitz, D., van Roermund, A.
Format: Article
Language:English
Subjects:
BiCMOS integrated circuits
Carrier to noise ratios
Circuit noise
Circuits
Clocks
Evolution
Flip-flops
Isolation technology
Optical buffering
Optical receivers
Oscillators
Quadratures
Receivers
Ring oscillators
Transistors
Tunable circuits and devices
Voltage
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This paper describes a quadrature ring oscillator that is tunable from 9.8 to 11.5 GHz in a 30-GHz f/sub T/ BiCMOS technology. The ring oscillator can be used in advanced data clock recovery architectures in optical receivers. The circuit implementation of the oscillator uses transistors as active inductances. Isolation between the oscillator and cascaded circuits, such as buffers and flip-flops, is improved by utilizing the active inductances in a cascode configuration. Carrier to noise ratios better than 94 dBc/Hz at 2-MHz offset are measured with 75-mW dissipation and 2.7-V supply voltage. The evolution in two-stage ring oscillator topologies, leading to the realized design, is discussed in detail on the circuit level.
ISSN:0018-9200
1558-173X
DOI:10.1109/4.987097