An oven comprising: - a door movable between an open position and a closed position; - a cooking chamber configured to receive a food product, the cooking chamber being defined at least in part by a top wall, a bottom wall, a first sidewall and a second sidewall, the cooking chamber further defining an opening that interfaces with the door; - a radio frequency energy source configured to apply RF energy to the food product; and - an RF choke disposed at a portion of the door facing the cooking chamber when the door is in the closed position, wherein the RF choke comprises: - a base portion comprising a metallic sheet, the base portion being disposed in a first plane substantially parallel to a second plane in which the door lies; and - a plurality of resonant elements folded out of the first plane toward the door, the resonant elements being formed in rows to define a top row of resonant elements, a bottom row of resonant elements, a first side row of resonant elements and a second side row of resonant elements, which are proximate to respective ones of the top wall, the bottom wall, the first sidewall and the second sidewall of the cooking chamber when the door is in the closed position, wherein at least one of the rows is folded out of the first plane at a different angle relative to the first plane than other ones of the rows, wherein an intersection between the top wall and both of the first and second sidewalls (315, 320) forms a right angle, wherein the base portion defines a substantially right angle corner to correspond to the right angle at intersections between the top wall and the first and second sidewall (315, 320), characterized in that an intersection between the bottom wall and both of the first and second sidewalls (315, 320) forms a curved corner, that the base portion defines a substantially round corner to correspond to the curved corner at intersections between the bottom row of resonant elements and the first and second side rows of resonant elements, that a tail piece of the bottom row of resonant elements is folded around the substantially round corner to correspond to the curved corner, that at least one resonant element on the tail piece is formed via slots extending linearly away from the base portion, and resonant elements disposed at locations other than the tail piece are formed via notches cut linearly away from the base portion, and that the top row of resonant elements is tapered downward into the cooking chamber when the door is closed. - a door movable between an open position and a closed position; - a cooking chamber configured to receive a food product, the cooking chamber being defined at least in part by a top wall, a bottom wall, a first sidewall and a second sidewall, the cooking chamber further defining an opening that interfaces with the door; - a radio frequency energy source configured to apply RF energy to the food product; and - an RF choke disposed at a portion of the door facing the cooking chamber when the door is in the closed position, wherein the RF choke comprises: - a base portion comprising a metallic sheet, the base portion being disposed in a first plane substantially parallel to a second plane in which the door lies; and - a plurality of resonant elements folded out of the first plane toward the door, the resonant elements being formed in rows to define a top row of resonant elements, a bottom row of resonant elements, a first side row of resonant elements and a second side row of resonant elements, which are proximate to respective ones of the top wall, the bottom wall, the first sidewall and the second sidewall of the cooking chamber when the door is in the closed position, - a base portion comprising a metallic sheet, the base portion being disposed in a first plane substantially parallel to a second plane in which the door lies; and - a plurality of resonant elements folded out of the first plane toward the door, the resonant elements being formed in rows to define a top row of resonant elements, a bottom row of resonant elements, a first side row of resonant elements and a second side row of resonant elements, which are proximate to respective ones of the top wall, the bottom wall, the first sidewall and the second sidewall of the cooking chamber when the door is in the closed position, wherein at least one of the rows is folded out of the first plane at a different angle relative to the first plane than other ones of the rows, wherein an intersection between the top wall and both of the first and second sidewalls (315, 320) forms a right angle, wherein the base portion defines a substantially right angle corner to correspond to the right angle at intersections between the top wall and the first and second sidewall (315, 320), characterized in that an intersection between the bottom wall and both of the first and second sidewalls (315, 320) forms a curved corner, that the base portion defines a substantially round corner to correspond to the curved corner at intersections between the bottom row of resonant elements and the first and second side rows of resonant elements, that a tail piece of the bottom row of resonant elements is folded around the substantially round corner to correspond to the curved corner, that at least one resonant element on the tail piece is formed via slots extending linearly away from the base portion, and resonant elements disposed at locations other than the tail piece are formed via notches cut linearly away from the base portion, and that the top row of resonant elements is tapered downward into the cooking chamber when the door is closed.