Patent ID: 8286581
Filing Date: 2012-10-16
Classification: H01J

Abstract:
1. A high frequency power source, comprising: a power monitor; a power combining unit for obtaining a combined high frequency power, wherein the high frequency power source is provided with the power monitor to control the combined high frequency power obtained by the power combining unit, wherein the high frequency power controlled by using the power monitor is supplied to a plasma processing apparatus as an incident power, wherein the power combining unit includes a branch unit for combining a first and a second high frequency power to provide the combined high frequency power and branching a reflecting power of the incident power reflected from a plasma processing apparatus side and a consumption unit for consuming the reflecting power branched by the branch unit, wherein the branch unit includes a first and a second circulator, and the consumption unit includes dummy loads, each dummy load being coupled to the first and the second circulator, wherein the first and the second high frequency power are inputted into the first and the second circulator, respectively, and the first and the second circulator combine the first and the second high frequency power, wherein the reflecting power is branched at each of the first and the second circulator, and the branched reflecting power is dissipated by the dummy loads, and wherein the power monitor is located between the circulators and the plasma processing apparatus.