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US 12,224,472 B2Granted
Digital phase shifter
AssigneeFujikura Ltd.
InventorYusuke Uemichi
Life of this patent
Estimating the term…
Abstract
A connecting portion includes a first connection line configured to connect a signal line of a first digital phase shift circuit and a signal line of a second digital phase shift circuit, second connection lines configured to connect inner lines of the first digital phase shift circuit and inner lines of the second digital phase shift circuit, ground layers disposed above and below the first connection line and the second connection lines, and first via holes configured to connect at least the second connection lines and the ground layers.
Claims9
A digital phase shifter comprising:
- a first digital phase shift circuit group in which digital phase shift circuits are cascade-connected;
- a second digital phase shift circuit group in which digital phase shift circuits are cascade-connected;
- and
- a bend type connecting portion configured to connect a first digital phase shift circuit located at an end of the first digital phase shift circuit group and a second digital phase shift circuit located at an end of the second digital phase shift circuit group,
- wherein each of the digital phase shift circuits in the first digital phase shift circuit group and the digital phase shift circuits in the second digital phase shift circuit group includes at least a signal line, a pair of inner lines provided on both sides of the signal line, a pair of outer lines provided on outer sides of the inner lines, a first ground conductor connected to one ends of the inner lines and one ends of the outer lines, a second ground conductor connected to the other ends of the outer lines, a pair of electronic switches provided between the other ends of the inner lines and the second ground conductor, and a capacitor electrically connected between at least the signal line and at least one of the first ground conductor and the second ground conductor,
- each of the digital phase shift circuits in the first digital phase shift circuit group and the digital phase shift circuits in the second digital phase shift circuit group is a circuit set to a low delay mode in which a return current flows through the inner lines or a high delay mode in which a return current flows through the outer lines, and
- the connecting portion includes:
- a first connection line configured to connect the signal line of the first digital phase shift circuit and the signal line of the second digital phase shift circuit;
- second connection lines configured to connect the inner lines of the first digital phase shift circuit and the inner lines of the second digital phase shift circuit;
- ground layers disposed above and below the first connection line and the second connection lines;
- and
- first via holes configured to connect at least the second connection lines and the ground layers.
9 more elements
Dependencies are inferred from the claim text.