title: System efficiency analysis for high power solid state radio frequency transmitter.
abstract: This paper examines some important relationships, related with the system efficiency, for very high power, radio frequency solid-state transmitter; incorporating multiple solid-state power amplifier modules, power combiners, dividers, couplers, and control/interlock hardware. In particular, the characterization of such transmitters, at the component as well as the system level, is discussed. The analysis for studying the influence of the amplitude and phase imbalance, on useful performance parameters like system efficiency and power distribution is performed. This analysis is based on a scattering parameter model. This model serves as a template for fine-tuning the results, with the help of a system level simulator. For experimental study, this approach is applied to a recently designed modular and scalable solid-state transmitter, operating at the centre frequency of 505.8 MHz and capable of delivering a continuous power of 75 kW. Such first time presented, system level study and experimental characterization for the real time operation will be useful for the high power solid-state amplifier designs, deployed in particle accelerators.
authors.affiliation: RF Systems Division, Raja Ramanna Centre for Advanced Technology, Indore 452013, India.
authors.forename: Akhilesh
authors.initials: A
authors.lastname: Jain
authors.affiliation: RF Systems Division, Raja Ramanna Centre for Advanced Technology, Indore 452013, India.
authors.forename: D K
authors.initials: DK
authors.lastname: Sharma
authors.affiliation: RF Systems Division, Raja Ramanna Centre for Advanced Technology, Indore 452013, India.
authors.forename: A K
authors.initials: AK
authors.lastname: Gupta
authors.affiliation: RF Systems Division, Raja Ramanna Centre for Advanced Technology, Indore 452013, India.
authors.forename: M R
authors.initials: MR
authors.lastname: Lad
authors.affiliation: RF Systems Division, Raja Ramanna Centre for Advanced Technology, Indore 452013, India.
authors.forename: P R
authors.initials: PR
authors.lastname: Hannurkar
authors.affiliation: Electromagnetics and Microwave Engineering, Institute for Plasma Research, Gandhinagar 382 428, India.
authors.forename: S K
authors.initials: SK
authors.lastname: Pathak