초록 ▼

A single mode resonant cavity is adapted to absorb energy via a single excitation mode in a plurality of overlapping absorption bands having different respective resonant frequencies, thereby increasing the resonant bandwidth of the cavity. The high Q-factor cavity may form part of a microwave power

A single mode resonant cavity is adapted to absorb energy via a single excitation mode in a plurality of overlapping absorption bands having different respective resonant frequencies, thereby increasing the resonant bandwidth of the cavity. The high Q-factor cavity may form part of a microwave powered catalytic converter for exhaust gas, and has the advantage that as the cavity warms up and physically expands the coupling efficiency between the cavity and a relatively narrow waveband microwave source remains good.

대표청구항 ▼

[ What is claimed is:] [1.] A single mode resonant cavity, for use in a catalytic converter system, the cavity being defined by walls which are constructed and arranged such that the cavity allows electromagnetic energy to resonate via a single mode, wherein said walls are adapted such that in use t

[ What is claimed is:] [1.] A single mode resonant cavity, for use in a catalytic converter system, the cavity being defined by walls which are constructed and arranged such that the cavity allows electromagnetic energy to resonate via a single mode, wherein said walls are adapted such that in use the single mode is excited via a plurality of overlapping wavebands having different respective resonant frequencies, thereby increasing the resonant bandwidth of the cavity.