Microwave oven excitation system

Details Microwave oven excitation system Microwave oven excitation system

1979-12-03

1982-02-16

Reynolds, B. A.

Electric heating

Metal heating

Of cylinders

219 1055R, H05B 672

Patent

active

043160697

ABSTRACT:
An excitation system for a microwave oven in which a rotating microwave field is established in a waveguide section prior to being propagated into the microwave oven cavity. A circular waveguide has an internal L-shaped rotating antenna excited from a coupling probe in an attached rectangular waveguide to establish in the waveguide a stationary TM01 and a TE11 mode. These modes interact in the waveguide to give an asymmetric rotating waveguide field which is then propagated into the oven to provide a rotating field pattern of desirable average uniformity. The excitation circular waveguide is located in a central position on the bottom wall of the oven.

REFERENCES:
patent: 2961520 (1960-11-01), Long
patent: 3619536 (1971-11-01), Boehm
patent: 3746823 (1973-07-01), Whiteley
patent: 3819900 (1974-06-01), Ironfield
patent: 3823295 (1974-07-01), Simon et al.
patent: 3851133 (1974-11-01), Dygve et al.
patent: 3934106 (1976-01-01), Macmaster et al.
patent: 4027133 (1977-05-01), Dygve et al.
patent: 4028521 (1977-06-01), Uyeda et al.
patent: 4162380 (1979-07-01), Burke

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