Clock generation circuitry
AssigneeSocionext Inc.
InventorsIan Juso Dedic, David Timothy Enright
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Abstract
There is disclosed herein clock generation circuitry, in particular rotary travelling wave oscillator circuitry. Such circuitry comprises a pair of signal lines connected together to form a closed loop and arranged such that they define at least one transition section where both said lines in a first portion of the pair cross from one lateral side of both said lines in a second portion of the pair to the other lateral side of both said lines in the second portion of the pair.
Claims18
Rotary travelling wave oscillator circuitry, comprising a pair of signal lines connected together to form a closed loop and arranged such that they define at least one transition section where both said lines in a first portion of the pair cross from one lateral side of both said lines in a second portion of the pair to the other lateral side of both said lines in the second portion of the pair,
- wherein:
- the pair of signal lines both follow a continuous path which crosses itself at the transition section;
- the path defines a figure-of-eight shape;
- and
- the transition section is at the crossover section of the figure-of-eight shape.
Rotary travelling wave oscillator circuitry, comprising a pair of signal lines connected together to form a closed loop and arranged such that they define at least one transition section where both said lines in a first portion of the pair cross from one lateral side of both said lines in a second portion of the pair to the other lateral side of both said lines in the second portion of the pair,
- wherein the pair of signal lines are configured in a balanced arrangement such that a travelling wave travelling around the closed loop would spend equal amounts of time either side of the transition section.
Rotary travelling wave oscillator circuitry, comprising a pair of signal lines connected together to form a closed loop and arranged such that they define at least one transition section where both said lines in a first portion of the pair cross from one lateral side of both said lines in a second portion of the pair to the other lateral side of both said lines in the second portion of the pair,
- wherein the pair of signal lines are configured in a symmetrical arrangement such that a set of relative phases 0°, 90°, 180° and 270° of a travelling wave travelling around the closed loop would occur at a corresponding set of virtual points along the signal lines which fall on a straight virtual line.
Dependencies are inferred from the claim text.