Exh Corporation

Other

Severn Trent Water Purification, Inc.

Per Olov Risman

Jeremy Philip Meier

Nikola Petrovic

Dennis Downie

Magnus Otterskog

Gerald Dornblaser

A new and comparatively small type of open-ended microwave applicators has been disclosed. They are for example suitable for transmission into and reception from contacting objects such as protruding human bodyparts for inhomogeneity detection by tomographic methods. The applicators according to the invention are of the dielectric-filled open-ended ridged rectangular TEtype, with an insert filling the ridge and having a higher permittivity than the surrounding space. The shape of the insert can be as a frustrum pyramid towards the opening. The overall design promotes narrow beamwidths and minimizes nearfields and surface wave excitation.

Microwave antenna applicator

Methods and systems are provided for enhancing the ultraviolet output of a water disinfection apparatus by: (i) maintaining the source of the UV radiation at a stable operating temperature and, (ii) facilitating an efficient transfer of microwave energy to the source of the UV radiation.

Method and system for achieving optimal UV water disinfection

A new type of microwave applicator has been disclosed. The applicator according to an embodiment of the invention makes use of an evanescent main power-transferring mode. This evanescent mode is complemented by a second mode, which is a propagating mode that has the purpose of providing a counter-directed magnetic field in the y-direction at the horizontal, y-directed applicator wall opening. The effect of the cooperation of the two applicator modes is that the field pattern extends over a significant distance below the applicator opening, such that a load placed below the applicator opening is heated by a field pattern of the mode combination.

Microwave heating applicator

A rectangular microwave applicator operating at a predetermined frequency and comprising a microwave enclosure forming a cavity having first and second transverse dimensions and a longitudinal dimension n the direction of propagation of microwave energy, wherein said dimensions are such that a main power-transferring Teymn mode with a long vertical wavelength is enhanced, and a significant amplitude of a complementary Teymn mode is created, wherein m, mand n are positive odd integers and mand n are both less or equal to m.

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Härryda, Sweden

Per Olov Risman