The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
@unpublished{jeong:ipac2020-thvir08, author = {H.S. Jeong and S. Cho and H. Jung and B.G. Kang and H.J. Yoo and T.S. Yoon}, title = {{High Efficient GaN/SiC Solid-State Technology for 1.3GHz Superconducting Cavity RF Power Source}}, booktitle = {Proc. IPAC'20}, language = {english}, intype = {presented at the}, series = {International Particle Accelerator Conference}, number = {11}, venue = {Caen, France}, publisher = {JACoW Publishing, Geneva, Switzerland}, month = {06}, year = {2020}, note = {presented at IPAC'20 in Caen, France, unpublished}, abstract = {{The conventional RF power source of the accelerator, Klystron, has been used for a long time. Now, the solid-state technology is getting spotlight because of its competitive cost, easy maintenance, low/safe power supply voltage. Although LDMOS transistors are commonly known in the accelerator field, Gallium Nitride on Silicon Carbide or GaN/SiC transistor has proven its superior RF performances, higher efficiency, and smaller size in the telecom and the military field. RFHIC introduces a new GaN/SiC transistor which is specialized for 1.3GHz superconducting cavity RF power source. It maximizes its efficiency, 80%, with efficiency-contour matching techniques at 550W CW, using two 41.8mm gate-width GaN/SiC dies. The transistor is simulated with ADS, and the load-pull test verifies its performance. This transistor is utilized in designing a 2kW solid-state power amplifier with 70% efficiency. It consists of four 550W transistors with T-junction combining technology. Indeed, it contains accurate power monitoring and reflected power protection circuits. The ultimate goal of this 1.3GHz GaN/SiC solid-state technology is to replace current CW klystron up to several hundred kW.}}, }