A
microwave generator, an
ultraviolet light source, and a substrate
processing method. The
microwave generator includes a core
assembly, a first magnetic element, a second magnetic element, and a
heat sink. The core
assembly includes a first
electrode element and a second
electrode element sleeved on the first
electrode element. The first magnetic element is sleeved on the first electrode element, and the second magnetic element is sleeved on the first electrode element and separated from the first magnetic element. The second electrode element is located between the first magnetic element and the second magnetic element. The
heat sink includes at least one heat dissipation fin, and the heat dissipation fin extends towards the second magnetic element.