Abstract:
A method is provided for absorbing microwave energy comprising circulating energy- absorptive fluid along a path which rotates relative to an axis of propagation of the microwaves in a waveguide. Alternatively or in addition, the method comprises directing microwaves into a flow of water or other liquid which is not substantially greater in depth than the skin depth of the liquid at the frequency of the microwaves.
Abstract:
A method is provided for absorbing microwave energy comprising circulating energy- absorptive fluid along a path which rotates relative to an axis of propagation of the microwaves in a waveguide. Alternatively or in addition, the method comprises directing microwaves into a flow of water or other liquid which is not substantially greater in depth than the skin depth of the liquid at the frequency of the microwaves.
Abstract:
A radio frequency load (100) for absorbing a radio frequency wave having a frequency in a predetermined frequency band and a wavelength λ comprises a waveguide (110;210) with a portion having an opening (112) for said radio frequency wave. In addition, the radio frequency load (100) comprises at least one metal rod (120) provided in said waveguide (110; 210), said at least one metal rod (120) having a length of one-half of said wavelength λ to damp said radio frequency wave.
Abstract:
A microwave load is produced with a relatively absorbent metal cylinder closed at its ends by reflecting shutters. It is disclosed that the load walls lead to a dispersion, cylindrical in shape, by microwave reflection to be dissipated and therefore a negative absorption. Said dispersion avoids all stress cracking or melting related to electromagnetic energy concentrations.