Patent ID: 7507938

Claim:
A speed cooking oven for cooking a food product by hot gas and microwave energy, comprising: an oven cavity having opposing sides; at least one cooking rack; means for launching hot gas into the oven cavity from said opposing sides of the cavity; at least one magnetron for generating microwaves; at least two rectangular waveguides operably associated with the at least one magnetron, at least one of the at least two waveguides having a proximal end near the magnetron, an opposing distal end, and a longitudinal waveguide axis; at least one slot in each waveguide having a center point disposed along a longitudinal slot axis, the center point being located a selected distance from the distal end of the waveguide, the slot having a slot length along said longitudinal slot axis that is less than 0.5 free space wavelength; wherein the at least one slot in each waveguide is configured such that a substantially uniform microwave pattern is achieved without using a mechanical phase-altering device; and wherein said waveguides are configured for launching microwave energy through respective slots and into the oven cavity from opposing sides of the cavity.