A non-reciprocal microwave network is provided that includes an in-line ferromagnetic element with adjoining polarizing adapters to achieve directivity via a multi-mode interaction at or near the ferrite to act as new class of 4-port circulator or 2-port isolator, with standard waveguide inputs for assembly in larger networks.

A non-reciprocal microwave network is provided that includes an in-line ferromagnetic element [1010] with adjoining polarizing adapters [1002, 1004, 1006, 1008] to achieve directivity via a multi-mode interaction at or near the ferrite to act as new class of 4-port circulator or 2-port isolator, with standard waveguide inputs for assembly in larger networks.

A Co.sub.2Z hexaferrite composition is provided containing molybdenum and one or both of barium and strontium, having the formula (Ba.sub.2Sr.sub.(3-Z)Co.sub.(2+X))Mo.sub.xFe.sub.(y-2x)O.sub.41 where x=0.01 to 0.20; y=20 to 24; and z=0 to 3. The composition can exhibit high permeabilities and equal or substantially equal values of permeability and permittivity while retaining low magnetic and dielectric loss tangents and loss factors. The composition is suitable for high frequency applications such as ultrahigh frequency and microwave antennas and other devices.

A Co.sub.2Z hexaferrite composition is provided containing molybdenum and one or both of barium and strontium, having the formula (Ba.sub.2Sr.sub.(3-Z)Co.sub.(2+X))Mo.sub.xFe.sub.(y-2x)O.sub.41 where x=0.01 to 0.20; y=20 to 24; and z=0 to 3. The composition can exhibit high permeabilities and equal or substantially equal values of permeability and permittivity while retaining low magnetic and dielectric loss tangents and loss factors. The composition is suitable for high frequency applications such as ultrahigh frequency and microwave antennas and other devices.

Techniques are disclosed for systems and methods to provide a magnetic materials additive manufacturing system (MMAMS) configured to form compact magnetic structures and/or devices. A MMAMS includes a controller and one or more dispensers configured to dispense magnetic material matrix in a high resolution pattern in order to form the compact magnetic structures and/or devices. The MMAMS receives a magnetic device design including a magnetic structure to be formed from a magnetic material matrix, where the magnetic material matrix is configured to be used in the MMAMS. The MMAMS receives magnetic material matrix and dispenses the magnetic material matrix to form the magnetic structure.

Techniques are disclosed for systems and methods to provide a magnetic materials additive manufacturing system (MMAMS) configured to form compact magnetic structures and/or devices. A MMAMS includes a controller and one or more dispensers configured to dispense magnetic material matrix in a high resolution pattern in order to form the compact magnetic structures and/or devices. The MMAMS receives a magnetic device design including a magnetic structure to be formed from a magnetic material matrix, where the magnetic material matrix is configured to be used in the MMAMS. The MMAMS receives magnetic material matrix and dispenses the magnetic material matrix to form the magnetic structure.

A rectangular waveguide device is provided. The rectangular waveguide device comprising: a first broad wall; a second broad wall parallel to the first broad wall; a first narrow wall perpendicular to and connected to the first broad wall and the second broad wall; a second narrow wall parallel to the first narrow wall and connected to the first broad wall and the second broad wall; and at least one slot in the first broad wall.

A rectangular waveguide device is provided. The rectangular waveguide device comprising: a first broad wall; a second broad wall parallel to the first broad wall; a first narrow wall perpendicular to and connected to the first broad wall and the second broad wall; a second narrow wall parallel to the first narrow wall and connected to the first broad wall and the second broad wall; and at least one slot in the first broad wall.

An energy harvester system includes an aircraft power cable carrying an alternating current and an energy harvester. The energy harvester includes a ferromagnetic ring encircling the aircraft power cable and configured so that the alternating current in the aircraft power cable generates magnetic flux in the ferromagnetic ring and an inductive coil wrapped around at least a portion of the ferromagnetic ring to generate a voltage from the magnetic flux in the ferromagnetic ring.

A rectangular waveguide device is provided. The rectangular waveguide device comprising: a first broad wall; a second broad wall parallel to the first broad wall; a first narrow wall perpendicular to and connected to the first broad wall and the second broad wall; a second narrow wall parallel to the first narrow wall and connected to the first broad wall and the second broad wall; and at least one slot in the first broad wall.