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US 10,964,994 B2Granted
Nonreciprocal circuit element and communication apparatus using the same
AssigneeTDK Corporation
InventorsHidenori Ohata, Yoshinori Matsumaru, Junichi Nakamura
Life of this patent
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Abstract
Disclosed herein is a nonreciprocal circuit element that includes a magnetic rotator, and a permanent magnet that applies a DC magnetic field to the magnetic rotator. The magnetic rotator includes a center conductor, a first ferrite core laminated on the center conductor, and a dielectric provided in a gap formed between the center conductor and the first ferrite core.
Claims14
A nonreciprocal circuit element comprising:
- a magnetic rotator;
- and
- a permanent magnet that applies a DC magnetic field to the magnetic rotator,
- wherein the magnetic rotator includes a center conductor, a first ferrite core laminated on the center conductor, and a dielectric provided in a gap formed between the center conductor and the first ferrite core, and
- wherein a dielectric constant of the dielectric is equal to or higher than a dielectric constant of the first ferrite core.
2 more elements
A nonreciprocal circuit element comprising:
- a magnetic rotator;
- and
- a permanent magnet that applies a DC magnetic field to the magnetic rotator,
- wherein the magnetic rotator includes a center conductor, a first ferrite core laminated on the center conductor, and a dielectric provided in a gap formed between the center conductor and the first ferrite core,
- wherein the magnetic rotator further includes a second ferrite core,
- wherein the center conductor is sandwiched between the first and second ferrite cores,
- wherein the dielectric is further provided in a gap formed between the center conductor and the second ferrite core such that the center conductor and the dielectric are sandwiched between the first and second ferrite cores,
- wherein a lower surface of the center conductor has a portion that contacts the first ferrite core and a portion that does not contact the first ferrite core,
- wherein an upper surface of the center conductor has a portion that contacts the second ferrite core and a portion that does not contact the second ferrite core, and
- wherein the dielectric is interposed between the portion of the lower surface of the center conductor that does not contact the first ferrite core and the first ferrite core and between the portion of the upper surface of the center conductor that does not contact the second ferrite core and the second ferrite core.
7 more elements
A nonreciprocal circuit element comprising:
- a magnetic rotator;
- and
- a permanent magnet that applies a DC magnetic field to the magnetic rotator,
- wherein the magnetic rotator includes a center conductor, a first ferrite core laminated on the center conductor, and a dielectric provided in a gap formed between the center conductor and the first ferrite core,
- wherein the magnetic rotator further includes a second ferrite core,
- wherein the center conductor is sandwiched between the first and second ferrite cores,
- wherein the dielectric is further provided in a gap formed between the center conductor and the second ferrite core such that the center conductor and the dielectric are sandwiched between the first and second ferrite cores,
- wherein the center conductor has a large thickness portion and a small thickness portion,
- wherein the large thickness portion contacts the second ferrite core, and
- wherein the dielectric is interposed between the small thickness portion and the second ferrite core.
7 more elements
Dependencies are inferred from the claim text.