Phase shifter, phased-array antenna, and radar
AssigneeMurata Manufacturing Co., Ltd.
InventorsNobumasa Kitamori, Toshiro Hiratsuka
Life of this patent
Estimating the term…
Abstract
A phase shifter includes upper and lower conductive plates, and a dielectric strip sandwiched between the conductive plates, and a plurality of slots formed in the upper conductive plate, thereby forming a dielectric line. A rotator is positioned at either side of the dielectric strip so that the distance from the rotator to the dielectric strip varies as the rotator rotates. As the rotator rotates, the phase constant of the dielectric line progressively changes in the direction of electromagnetic propagation. The rotation of the rotator causes a change in feed phase with respect to the slots as the rotator rotates, thereby performing beam scanning.
Claims18
A phase shifter comprising:
- a substantially planar dielectric plate;
- a conductive strip formed on the dielectric plate;
- and
- a rotator at least partially including a conductor and a dielectric, said rotator being positioned in proximity to said conductive strip so as to rotate.
A phase shifter comprising:
- two substantially planar conductive plates;
- a dielectric strip sandwiched between the two conductive plates;
- and
- a rotator at least partially including at least one of a conductor and a dielectric, said rotator being positioned at at least one side of said dielectric strip so as to rotate.
A phased-array antenna comprising:
- a substantially planar dielectric plate;
- a conductive strip formed on the dielectric plate;
- and
- a rotator at least partially including a conductor and a dielectric, said rotator being positioned in proximity to said conductive strip so as to rotate;
- further comprising a ground electrode formed on the dielectric plate;
- and
- a plurality of slots formed in the ground electrode, through which electromagnetic waves are emitted.
A phased-array antenna comprising:
- a substantially planar dielectric plate;
- a conductive strip formed on the dielectric plate;
- and
- a rotator at least partially including a conductor and a dielectric, said rotator being positioned in proximity to said conductive strip so as to rotate;
- further comprising microstrip antenna patches formed on the dielectric plate.
A phased-array antenna comprising:
- two substantially planar conductive plates;
- a dielectric strip sandwiched between the two conductive plates;
- and
- a rotator at least partially including at least one of a conductor and a dielectric, said rotator being positioned at at least one side of said dielectric strip so as to rotate;
- further comprising a plurality of slots formed in at least one of the conductive plates.
A radar comprising:
- a phased-array antenna, the phased-array antenna comprising a substantially planar dielectric plate;
- a conductive strip formed on the dielectric plate;
- and
- a rotator at least partially including a conductor and a dielectric, said rotator being positioned in proximity to said conductive strip so as to rotate;
- further comprising a ground electrode formed on the dielectric plate;
- and
- a plurality of slots formed in the ground electrode, through which electromagnetic waves are emitted;
- and
- further comprising a transceiver unit using the phased-array antenna for transmission and reception.
A radar comprising:
- a phased-array antenna, the phased-array antenna comprising a substantially planar dielectric plate;
- a conductive strip formed on the dielectric plate;
- and
- a rotator at least partially including a conductor and a dielectric, said rotator being positioned in proximity to said conductive strip so as to rotate;
- further comprising microstrip antenna patches formed on the dielectric plate;
- and
- further comprising a transceiver unit using the phased-array antenna for transmission and reception.
A radar comprising:
- a phased-array antenna, the phased-array antenna comprising two substantially planar conductive plates;
- a dielectric strip sandwiched between the two conductive plates;
- and
- a rotator at least partially including at least one of a conductor and a dielectric, said rotator being positioned at at least one side of said dielectric strip so as to rotate;
- further comprising a plurality of slots formed in at least one of the conductive plates;
- and
- further comprising a transceiver unit using the phased-array antenna for transmission and reception.
Dependencies are inferred from the claim text.