Circular polarization generating system for microwave oven

Details Circular polarization generating system for microwave oven Circular polarization generating system for microwave oven

1999-01-07

2000-08-01

Leung, Philip H.

Electric heating

Microwave heating

Field modification

219748, 219750, 219695, H05B 672

Patent

active

060970189

ABSTRACT:
A microwave oven includes a magnetron for generating electromagnetic wave energy, a waveguide for guiding and directing the electromagnetic wave energy into a cavity body defining a cooking chamber, and an antenna for radiating the electromagnetic wave energy generated by the magnetron into the waveguide. The waveguide includes a first opening for uniformly dispersing the electromagnetic wave energy into the cooking chamber, a second opening for uniformly dispersing the electromagnetic wave energy into the cooking chamber, and a short circuit for providing a short surface to the antenna. The first opening is formed on a portion of the waveguide which contacts the cavity body and extends along a longitudinal direction. The second opening is spaced away from and having a predetermined angle with respect to the first opening.

REFERENCES:
patent: 2704802 (1955-03-01), Blass et al.
patent: 3210511 (1965-10-01), Smith
patent: 4642435 (1987-02-01), Fitzmayer et al.
patent: 4808784 (1989-02-01), Ko

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