Rf signal switching, phase shifting and polarization control
AssigneeInternational Business Machines Corporation
InventorsAlberto Valdes Garcia, Wayne H. Woods, JR., Bodhisatwa Sadhu
Life of this patent
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Abstract
An apparatus includes first and second electronically tunable transmission lines configured to receive a signal pair and provide a selected phase delay difference to the signal pair, a first shunting element connected to the first electronically tunable transmission line and a second shunting element connected to the second electronically tunable transmission line. The first and second shunting elements may each be configured to selectively shunt the electronically tunable transmission line to which they are connected according to one or more shunting control signals. A corresponding method is also disclosed herein.
Claims20
An apparatus comprising:
- first and second electronically tunable transmission lines configured to transmit or receive a signal pair and provide a selected phase delay difference to the signal pair;
- a first shunting element connected to the first electronically tunable transmission line and a second shunting element connected to the second electronically tunable transmission line;
- and
- wherein the first and second shunting elements are each configured to selectively shunt the electronically tunable transmission line to which they are connected according to one or more shunting control signals.
A method comprising:
- providing a signal pair to first and second electronically tunable transmission lines configured to transmit or receive the signal pair and provide a selected phase delay difference to the signal pair;
- providing a first shunting element connected to the first electronically tunable transmission line and a second shunting element connected to the second electronically tunable transmission line;
- providing one or more shunting control signals;
- and
- wherein the first and second shunting elements are each configured to selectively shunt the electronically tunable transmission line to which they are connected according to the one or more shunting control signals.
An apparatus comprising:
- first and second antenna ports;
- first and second electronically tunable transmission lines configured to receive/transmit a signal pair from/to the first and second antenna ports, respectively, and provide a selected phase delay difference to the signal pair;
- a first shunting element connected to the first electronically tunable transmission line and a second shunting element connected to the second electronically tunable transmission line;
- and
- wherein the first and second shunting elements are each configured to selectively shunt the electronically tunable transmission line to which they are connected according to one or more shunting control signals.
Dependencies are inferred from the claim text.