There remains a desire to improve microwave suppression, especially in continuous microwave heating systems. For example, other ways of suppressing microwave energy from escaping from a microwave system as a product or material is moving through can include, for example, water jackets or reflectors. Other technological approaches are currently used to prevent the danger of microwave emissions, but can be less flexible than desirable. In these systems, a blockage or slowdown in the process can occur. For example, granular materials or particles (such as moisture-laden granular materials) are sometimes introduced through a square channel system. The same type of grate and channels can be employed on an outlet end. This can be handled at present by introducing material through a metal grate including two by two inch square metal channels. While applying microwave heating to moisture-containing particles, a problem can include preventing microwaves from escaping to an inlet and/or an outlet/discharge region from a channel or region where the microwaves are applied. Continuous microwave heating arrangements have presented a problem that is more complex than the suppression of microwave energy from a simpler batch microwave system. There is a desire for suppression of microwave energy from these apertures. Many industrial microwave heating applications require that there be access apertures into the enclosure so that materials may be continuously transported utilizing such as, for example, a conveyor unit or other mechanism. The intensity of the microwave energy that is permitted to leak is sometimes restricted to less than 10 milliwatts (mW) per centimeter squared. Some government agencies allocate frequency bands centered at 915 MHz and 2450 MHz for use in microwave heating systems. Molecular agitation within the material resulting from its exposure to microwave energy provides energy to heat or dry the material. Microwave energy can be radiated within an enclosure to process materials. 1, 2019, the entire contents of which are incorporated by reference for all purposes herein. 62/869,305 titled “MICROWAVE SUPPRESSION TUNNEL AND RELATED FEATURES” filed Jul.
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