A radio frequency, RF, heating or defrosting system (200, 300, 700) comprising: an RF signal source (340, 740) configured to produce an RF signal; a first structure comprising a shelf (216, 266, 1700) and a first electrode (370, 770), wherein the first electrode is electrically coupled to the RF signal source; and a removable drawer (1110, 1210), wherein the first structure and the removable drawer (1110, 1210) are configured to be physically engaged together in a non-permanent manner to create a cavity (310, 774, 1806) between the first structure and the removable drawer (1110, 1210), the removable drawer (1110, 1210) comprising: a second electrode (1504, 1604) that at least partially vertically overlaps the first electrode when the removable drawer (1110, 1210) is physically engaged with the first structure; a first conductive feature that is permanently coupled to the removable drawer (1110, 1210) and permanently electrically coupled to the second electrode (1504, 1604); a removable platform (1111, 1211); a side rail (1114, 1116) to which the first conductive feature is connected; dielectric material (1502, 1602) on which or in which the second electrode (1504, 1604) is formed; and one or more conductive traces (1506, 1508, 1606, 1608) formed in or on the dielectric material that electrically connect the second electrode (1504, 1604) to the first conductive feature, the system further comprising a second conductive feature that is configured to physically and electrically connect to the first conductive feature when the removable drawer (1110, 1210) is fully physically engaged with the first structure. an RF signal source (340, 740) configured to produce an RF signal; a first structure comprising a shelf (216, 266, 1700) and a first electrode (370, 770), wherein the first electrode is electrically coupled to the RF signal source; and a removable drawer (1110, 1210), wherein the first structure and the removable drawer (1110, 1210) are configured to be physically engaged together in a non-permanent manner to create a cavity (310, 774, 1806) between the first structure and the removable drawer (1110, 1210), the removable drawer (1110, 1210) comprising: a second electrode (1504, 1604) that at least partially vertically overlaps the first electrode when the removable drawer (1110, 1210) is physically engaged with the first structure; a first conductive feature that is permanently coupled to the removable drawer (1110, 1210) and permanently electrically coupled to the second electrode (1504, 1604); a removable platform (1111, 1211); a side rail (1114, 1116) to which the first conductive feature is connected; dielectric material (1502, 1602) on which or in which the second electrode (1504, 1604) is formed; and one or more conductive traces (1506, 1508, 1606, 1608) formed in or on the dielectric material that electrically connect the second electrode (1504, 1604) to the first conductive feature, a second electrode (1504, 1604) that at least partially vertically overlaps the first electrode when the removable drawer (1110, 1210) is physically engaged with the first structure; a first conductive feature that is permanently coupled to the removable drawer (1110, 1210) and permanently electrically coupled to the second electrode (1504, 1604); a removable platform (1111, 1211); a side rail (1114, 1116) to which the first conductive feature is connected; dielectric material (1502, 1602) on which or in which the second electrode (1504, 1604) is formed; and one or more conductive traces (1506, 1508, 1606, 1608) formed in or on the dielectric material that electrically connect the second electrode (1504, 1604) to the first conductive feature, the system further comprising a second conductive feature that is configured to physically and electrically connect to the first conductive feature when the removable drawer (1110, 1210) is fully physically engaged with the first structure.