Electronic circuitry
AssigneeAnalog Devices, Inc.
InventorJohn Wood
Life of this patent
Estimating the term…
Abstract
Electronic circuitry comprising operational circuits of active switching type requiring timing signals, and conductive means for distributing said timing signals to the operational circuits, wherein the timing signal distribution means includes a signal path that has different phases of a drive signal are supplied via active means at different positions about the signal path where that path exhibits endless electro-magnetic continuity without signal phase inversion or has interconnections with another signal path having different substantially unidirectional signal flow where there is no endless electromagnetic continuity between those signal paths and generally has non-linear associated circuit means where the signal path is of a transmission line nature.
Claims19
An apparatus comprising:
- a first rotary traveling wave oscillator that includes a first differential transmission line connected in a loop with at least one cross-over, and a first plurality of regeneration elements for sustaining a traveling wave on the first differential transmission line;
- and
- a second rotary traveling wave oscillator that includes a second differential transmission line connected in a loop with at least one cross-over, and a second plurality of regeneration elements for sustaining a traveling wave on the second differential transmission line,
- wherein the first and second traveling wave oscillators are configured to operate in frequency and phase synchrony.
A method of clock signal generation, the method comprising:
- generating a first traveling wave using a first rotary traveling wave oscillator, wherein the first rotary traveling wave oscillator includes a first differential transmission line connected in a loop with at least one cross-over and a first plurality of regeneration elements for sustaining a traveling wave on the first differential transmission line;
- generating a second traveling wave using a second rotary traveling wave oscillator, wherein the second rotary traveling wave oscillator includes a second differential transmission line connected in a loop with at least one cross-over and a second plurality of regeneration elements for sustaining a traveling wave on the second differential transmission line;
- and
- synchronizing the first and second rotary traveling wave oscillators in frequency and phase.
Dependencies are inferred from the claim text.