title: Development of an 83.2 MHz, 3.2 kW solid-state RF amplifier using Wilkinson power divider and combiner for a 10 MeV cyclotron.
abstract: We design a stripline-type Wilkinson power divider and combiner for a 3.2 kW solid-state radio frequency (RF) amplifier module and optimize this setup. A Teflon-based printed circuit board is used in the power combiner to transmit high RF power efficiently in the limited space. The reflection coefficient (S11) and insertion loss (S21) related to impedance matching are characterized to determine the optimization process. The resulting two-way divider reflection coefficient and insertion loss were -48.00 dB and -3.22 dB, respectively. The two-way power combiner reflection coefficient and insertion loss were -20 dB and -3.3 dB, respectively. Moreover, the 3.2 kW solid-state RF power test results demonstrate that the proposed power divider and combiner exhibit a maximum efficiency value of 71.3% (combiner loss 5%) at 48 V supply voltage.
authors.affiliation: College of Information and Communication Engineering, Sungkyunkwan University, Suwon 16419, South Korea.
authors.forename: Ho Seung
authors.identifier: 0000000259133364
authors.initials: HS
authors.lastname: Song
authors.affiliation: College of Information and Communication Engineering, Sungkyunkwan University, Suwon 16419, South Korea.
authors.forename: Mitra
authors.initials: M
authors.lastname: Ghergherehchi
authors.affiliation: Department of Energy Science, Sungkyunkwan University, Suwon 16419, South Korea.
authors.forename: Seyoung
authors.initials: S
authors.lastname: Oh
authors.affiliation: College of Information and Communication Engineering, Sungkyunkwan University, Suwon 16419, South Korea.
authors.forename: Jong Seo
authors.initials: JS
authors.lastname: Chai