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US 9,559,663 B2Granted
Electronically variable analog delay line
AssigneeTektronix, Inc.
InventorDaniel G. Knierim
Life of this patent
Estimating the term…
Abstract
An electronically variable analog delay line including at least one segment with an electronically variable inductance. The at least one segment includes a signal path, a ground return path, and a plurality of switches configured to vary the inductance of the segment.
Claims11
An electronically variable analog delay line, comprising:
- at least one segment with an electronically variable inductance, the at least one segment including:
- a signal path;
- a ground return path;
- and
- one or more switches configured to vary the inductance of the segment;
- wherein the at least one segment includes a short-delay mode and a long-delay mode, and the at least one segment is configured to delay a signal in the signal delay path a first delay amount in the short-delay mode and a second delay amount in the long-delay mode;
- and
- wherein the one or more switches includes three switches, two of the switches connected to ground at the ends of the ground return path, and the other of the switches connected to ground at the center of the ground return path.
5 more elements
A method for delaying a signal on an electronically variable analog delay line, comprising:
- switching between a short-delay mode and a long-delay mode;
- sending a signal on a signal path;
- adding capacitance to the signal path when in the long-delay mode to delay the signal by a first amount;
- and
- grounding a ground return path via turning on a first switch located at one end of the ground return path and a second switch located at the other end of the ground return path when in the short-delay mode to delay the signal by a second amount;
- wherein adding capacitance to the signal path when in the long-delay mode further includes turning on a center switch of the ground return path and turning off the first switch and the second switch of the ground return path.
3 more elements
Dependencies are inferred from the claim text.