Millimeter wave radio frequency phase shifter
AssigneeKyocera AVX Components (San Diego), Inc.
InventorsSever Cercelaru, Olivier Pajona
Life of this patent
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Abstract
A millimeter wave RF phase shifter includes an input and an output. The RF phase shifter further includes a transmission line coupled to the input. The transmission line can include a plurality of taps. The RF phase shifter can further include a plurality of switching devices. Each switching device can be coupled between the output and a corresponding tap of the plurality of taps. The RF phase shifter can include a control device operatively coupled to the plurality of switching devices. The control device can be configured to control operation of the plurality of switching devices to selectively couple one of the plurality of taps to the output to control a phase shift of a RF signal propagating on the transmission line.
Claims19
A millimeter wave radio frequency (RF) phase shifter, comprising:
- an input;
- an output;
- a transmission line coupled to the input, the transmission line having a plurality of taps;
- a first plurality of switching devices;
- wherein each of the first plurality of switching devices comprises a first terminal coupled to the input, a second terminal coupled to a power supply, and a third terminal coupled to ground;
- a second plurality of switching devices, each of the second plurality of switching devices coupled between the output and a corresponding switching device of the first plurality of switching devices;
- and
- wherein each of the second plurality of switching devices comprises a first terminal coupled to ground, a second terminal coupled to a power supply, and a third terminal coupled to ground;
- and
- a control device operatively coupled to the plurality of first switching devices and the plurality of second switching devices, the control device configured to control operation of the plurality of first switching devices and the plurality of second switching devices to selectively couple one of the plurality of taps to the output to adjust an electrical length of the transmission line to control a phase shift of a RF signal propagating on the transmission line.
A phased array antenna system, comprising:
- a plurality of antenna elements;
- and
- a plurality of millimeter wave radio frequency (RF) phase shifters, each of the plurality of millimeter wave RF phase shifter comprising:
- an input couplable to the RF source;
- an output couplable to a corresponding antenna element of the plurality of antenna elements;
- a transmission line coupled to the input, the transmission line having a plurality of taps;
- a first plurality of switching devices;
- wherein each of the first plurality of switching devices comprises a first terminal coupled to the input, a second terminal coupled to a power supply, and a third terminal coupled to ground;
- a second plurality of switching devices, each of the second plurality of switching devices coupled between the output and a corresponding switching device of the first plurality of switching devices;
- wherein each of the second plurality of switching devices comprises a first terminal coupled to ground, a second terminal coupled to a power supply, and a third terminal coupled to ground;
- and
- a control device operatively coupled to the plurality of first switching devices and the plurality of second switching devices, the control device configured to control operation of the plurality of first switching devices and the plurality of second switching devices to selectively couple one of the plurality of taps to the output to adjust an electrical length of the transmission line to control a phase shift of a RF signal propagating on the transmission line.
Dependencies are inferred from the claim text.