Crossed field device

摘要

A crossed field device, such as a magnetron or crossed field amplifier, that includes a cathode, an anode, one or more magnetic elements, and one or more extraction elements. In one embodiment, the crossed field device includes an annular cathode and anode that are axially spaced from one another such that the device produces an axial electric (E) field and a radial magnetic (B) field. In another embodiment, the crossed field device includes an oval-shaped cathode and anode that are radially spaced from one another such that the device produces a radial electric (E) field and an axial magnetic (B) field. The crossed field device may produce electromagnetic (EM) emissions having a frequency ranging from megahertz (MHz) to terahertz (THz), and may be used in one of a number of different applications.

主权项

1. A crossed field device for generating electromagnetic (EM) emissions, comprising:
a cathode that geometrically includes an axial direction and a radial direction that is normal to the axial direction, the cathode having an axial end that faces the axial direction; an anode being spaced from the cathode in the axial direction, the anode having a plurality of cavities and an axial end that faces the axial end of the cathode across an AK gap; a magnetic element; and an extraction element conveying the electromagnetic (EM) emissions from the crossed field device to an intended load, wherein the crossed field device is a recirculating device that creates an electric (E) field extending in the axial direction across the AK gap and a magnetic (B) field that extends in the radial direction through the AK gap.