The invention discloses a circular plate antenna crossed
magnetic field microwave electron cyclotron resonance ion propeller, and belongs to the technical field of
microsatellite electric propulsion.
Microwave energy is fed by adopting a circular plate antenna, the
microwave power density of the antenna is decreased, antenna arcing is inhibited, the
cut-off
power density is increased, the transverse
microwave electric field intensity of a
resonance region is increased, the breakdown power is reduced, the
plasma generation efficiency is improved, and meanwhile the
plasma radial uniformity is improved. A closed permanent
magnet steel column body is composed of circular-arc-shaped
magnet steel blocks and forms a crossed
magnetic field with an end face annular
magnetic field, therefore, ions are effectively constrained and driven through the radial and axial
magnetic gradient force, and the
ion generation efficiency is improved. Meanwhile,
charged particle leakage at a weak magnetic fieldin a
magnet steel clearance is reduced through the closed magnetic field. Under optimized
resonance region distribution, an
electron cyclotron resonance region on the front end face can be covered byadopting a thin aluminum plate, local strong
discharge of the region is inhibited, the
plasma generation efficiency is improved, and the performance of the
propeller is further improved.