▎ 摘　　要

NOVELTY - The method involves providing a substrate. A transition layer is formed on the substrate. A connecting line is formed on the transition layer, where the connecting line comprises a source electrode connected to a line region. A drain region is connected to the connection line and a gate line. An interlayer medium layer is formed on the transition layer. The interlayer medium layer is filled in the connecting line. A metallic contact layer is connected with the connection line. A graphene thin film is formed as a channel layer in an inverted radio frequency power tube. USE - Inverted radio frequency power tube forming method. ADVANTAGE - The method enables forming an inverted radio frequency power tube in an easy, stable and reliable manner with better gate control capability and small source-drain contact. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for an inverted radio frequency power tube. DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of an inverted radio frequency power tube. '(Drawing includes non-English language text)'