Isolator/circulator having propeller resonator loaded with a plurality of symmetric magnetic walls

A circulator having a microstripline/Stripline comprising:

• a resonator including a plurality of symmetric propellers, which are capable of transmitting signals in a single direction;
• slot formation units formed between the propellers to allow magnetic walls to be symmetrically generated and each including a plurality of slots, said plurality of slots vary in size;
• transfer tracks for bandwidth expansion formed at a side of each of the propellers within the range of the distance (the circumscribed radius of the resonator) between the center of the resonator and the outermost edge of the propeller;
• and
• ports formed at the ends of the transfer tracks.

A stripline isolator comprising:

• an upper ferrite substrate;
• a lower ferrite substrate;
• a stripline interpolated between the upper and lower ferrite substrates;
• an upper case for a ground electrode located over the upper ferrite substrate and having through holes, into which a plurality of screws can be inserted, the upper case, in which an upper permanent magnet is installed;
• a lower case for the ground electrode located under the lower ferrite substrate and having grooves, into which the plurality of screws can be fit, the lower case, in which a lower permanent magnet is installed;
• an upper and lower cover for protecting a magnetic field;
• side covers for constituting a closed circuit;
• SMA connectors for connecting the stripline to an external circuit;
• and
• a load resistor,
• wherein the stripline comprises a resonator including a plurality of symmetric propellers, which are capable of transmitting signals in a single direction, slot formation units formed between the propellers to allow magnetic walls to be symmetrically generated and each including a plurality of slots, said plurality of slots vary in size, transfer tracks for bandwidth expansion formed at a side of each of the propellers within the range of the distance (the circumscribed radius of the resonator) between the center of the resonator and the outermost edge of the propeller, and ports formed at the ends of the transfer tracks, a step difference as much as the thickness of the upper and lower ferrite substrates and the stripline exists in the lower case so that the upper and lower cases can be fit into each other to be in gear with each other, a groove, in which the load resistor will be installed, is prepared in the lower case, and the upper and lower cover simultaneously covers the upper and lower sides of the upper and lower cases assembled together without the need of additional assembling screws.

A stripline circulator comprising:

• an upper ferrite substrate;
• a lower ferrite substrate;
• a stripline interpolated between the upper and lower ferrite substrates;
• an upper case for a ground electrode located over the upper ferrite substrate and having through holes, into which a plurality of screws can be inserted, the upper case, in which an upper permanent magnet is installed;
• a lower case for the ground electrode located under the lower ferrite substrate and having grooves, into which the plurality of screws can be fit, the lower case, in which a lower permanent magnet is installed;
• an upper and lower cover for protecting a magnetic field;
• side covers for constituting a closed circuit;
• and
• SMA connectors for connecting the stripline to an external circuit,
• wherein the stripline comprises a resonator including a plurality of symmetric propellers, which are capable of transmitting signals in a single direction, slot formation units formed between the propellers to allow magnetic walls to be symmetrically generated and each including a plurality of slots, said plurality of slots vary in size, transfer tracks for bandwidth expansion formed at a side of each of the propellers within the range of the distance (the circumscribed radius of the resonator) between the center of the resonator and the outermost edge of the propeller, and ports formed at the ends of the transfer tracks, a step difference as much as the thickness of the upper and lower ferrite substrates and the stripline exists in the lower case so that the upper and lower cases can be fit into each other to be in gear with each other, and the upper and lower cover simultaneously covers the upper and lower sides of the upper and lower cases assembled together without the need of additional assembling screws.

A microstripline isolator comprising:

• a ferrite substrate;
• a microstripline prepared on the ferrite substrate;
• an upper case for a ground electrode located over the ferrite substrate and having through holes, into which a plurality of screws can be inserted, the upper case, in which an upper permanent magnet is installed;
• a lower case for the ground electrode located under the ferrite substrate and having grooves, into which the plurality of screws can be fit, the lower case, in which a lower permanent magnet is installed;
• an upper and lower cover for protecting a magnetic field;
• side covers for constituting a closed circuit;
• SMA connectors for connecting the microstripline to an external circuit;
• and
• a load resistor,
• wherein the microstripline comprises a resonator including a plurality of symmetric propellers, which are capable of transmitting signals in a single direction, slot formation units formed between the propellers to allow magnetic walls to be symmetrically generated and each including a plurality of slots, said plurality of slots vary in size, transfer tracks for bandwidth expansion formed at a side of each of the propellers within the range of the distance (the circumscribed radius of the resonator) between the center of the resonator and the outermost edge of the propeller, and ports formed at the ends of the transfer tracks, a step difference as much as the thickness of the ferrite substrate and the microstripline exists in the lower case so that the upper and lower cases can be fit into each other to be in gear with each other, a groove, in which the load resistor will be installed, is prepared in the lower case, and the upper and lower cover simultaneously covers the upper and lower sides of the upper and lower cases assembled together without the need of additional assembling screws.

A microstripline circulator comprising:

• a ferrite substrate;
• a microstripline prepared on the ferrite substrate;
• an upper case for a ground electrode located over the ferrite substrate and having through holes, into which a plurality of screws can be inserted, the upper case, in which an upper permanent magnet is installed;
• a lower case for the ground electrode located under the ferrite substrate and having grooves, into which the plurality of screws can be fit, the lower case, in which a lower permanent magnet is installed;
• an upper and lower cover for protecting a magnetic field;
• side covers for constituting a closed circuit;
• and
• SMA connectors for connecting the microstripline to an external circuit;
• wherein the microstripline comprises a resonator including a plurality of symmetric propellers, which are capable of transmitting signals in a single direction, slot formation units formed between the propellers to allow magnetic walls to be symmetrically generated and each including a plurality of slots, said plurality of slots vary in size, transfer tracks for bandwidth expansion formed at a side of each of the propellers within the range of the distance (the circumscribed radius of the resonator) between the center of the resonator and the outermost edge of the propeller, and ports formed at the ends of the transfer tracks, a step difference as much as the thickness of the ferrite substrate and the microstripline exists in the lower case so that the upper and lower cases can be fit into each other to be in gear with each other, and the upper and lower cover simultaneously covers the upper and lower sides of the upper and lower cases assembled together without the need of additional assembling screws.