Processing

Please wait...

Settings

Settings

1. WO2010076085 - INTEGRATED MILLIMETER WAVE PHASE SHIFTER AND METHOD

Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

CLAIMS

1. A phase shifter, comprising: a hybrid coupler being ground shielded; and reflective terminations being connected to the hybrid coupler such that when the hybrid coupler is connected to the reflective terminations a phase shifter is formed, the reflective terminations each include a parallel LC circuit.

2. The phase shifter as recited in claim 1, wherein the hybrid coupler includes differential coplanar strip lines (CPS) placed one on top of the other using different metal layers so that signal coupling occurs vertically.

3. The phase shifter as recited in claim 2, wherein the differential CPS are formed on a substrate having a major plane surface and the CPS are disposed on the plane surface and are bent in the major plane.

4. The phase shifter as recited in claim 2, wherein planar widths of the CPS that are stacked on top of each other are not identical.

5. The phase shifter as recited in claim 3, further comprising metal strips placed orthogonally with respect to the CPS to provide grounding.

6. The phase shifter as recited in claim 1, further comprising a single-ended implementation of the phase shifter where the hybrid coupler includes coupled lines placed over or under metal strips that are disposed orthogonally to the coupled lines.

7. The phase shifter as recited in claim 1 , wherein the parallel LC circuit includes a varactor and an inductor connected in parallel such that the varactor is controlled to control a phase shift provided by the phase shifter.

8. The phase shifter as recited in claim 1 , wherein phase shifter is configured for operation at millimeter-wave frequencies.

9. A phased array system, comprising: one or more antennae configured to receive/transmit a signal; a phase shifter as claimed in any one of claims 1 to 8 associated with each antennae.

10. A method for phase shifting a received signal, comprising: receiving a signal using one or more antennae; phase shifting the signal by an amount dependent on a phase shifter associated with each antennae, the phase shifter including a hybrid coupler being ground shielded and reflective terminations connected to the hybrid coupler, wherein the reflective terminations include a parallel LC circuit; and combining phase shifted signals received by the one or more antennae to provide spatial selectivity through phase shifted differences.

11. The method as recited in claim 10, wherein the hybrid coupler includes differential coplanar strip lines (CPS) placed one on top of the other using different metal layers so that signal coupling occurs vertically.

12. The method as recited in claim 10, further includes forming the differential CPS on a substrate having a major plane surface where the CPS are disposed on the plane surface and are bent in the major plane.

13. The method as recited in claim 10, wherein planar widths of the CPS that are stacked on top of each other are not identical.

14. The method as recited in claim 11, further comprising placing metal strips orthogonally with respect to the CPS to provide grounding.

15. The method as recited in claim 10, wherein the parallel LC circuit includes a varactor and an inductor connected in parallel and the method further includes controlling the varactor to control a phase shift provided by the phase shifter.

16. A method for phase shifting a transmitted signal, comprising: distributing a signal to one or more antennae; phase shifting the signal by an amount dependent on a phase shifter associated with each antennae, the phase shifter including a hybrid coupler being ground shielded and reflective terminations connected to the hybrid coupler, wherein the reflective terminations include a parallel LC circuit; and transmitting the phase shifted signals from the one or more antennae to provide spatial selectivity through phase shifted differences.

17. The method as recited in claim 16, wherein the hybrid coupler includes differential coplanar strip lines (CPS) placed one on top of the other using different metal layers so that signal coupling occurs vertically.

18. The method as recited in claim 17, further includes forming the differential CPS on a substrate having a major plane surface where the CPS are disposed on the plane surface and are bent in the major plane.