2014•Unpublished venueRequires access
Multi-kW 35 GHz TWT power booster development
B. Levush, David K. Abe, Alexander N. Vlasov, Igor A. Chernyavskiy, Simon J. Cooke, John Pasour, J. Legarra, D.E. Pershing, Khanh T. Nguyen, E. L. Wright, Jeremy Hanna, Armand Mollà Garcia, T. Kimura, P. Lugos, Chris Meyer, J. Luis Ramirez-Aldana, B. Stockwell, D. Chernin
Open publisher page 8 citations
Abstract
We describe our progress on the development of a Ka-band TWT driver-booster combination to produce >1kW over a 5 GHz band centered at 35 GHz. The driver is an existing > 500 Watt broadband coupled-cavity TWT1, employing a 2 stage depressed collector. The power booster is a newly designed sever-less folded waveguide TWT designed to provide 3-4 dB of additional gain. The booster also uses a 2 stage depressed collector and a slightly modified version of the same electron gun used in the driver. A photo of the driver and booster under test is shown in Fig. 1. The principal challenges that had to be met in a booster design were: (1) achieving the required output power and bandwidth, (2) ensuring stable booster operation under both small and large signal conditions and (3) presenting a good output match to the driver so that the driver remains stable.