Development of High-Power Ka-Band and Q-Band Helix-TWTs Chong, C. K. ; Davis, J. A. ; Leborgne, R. H. ; Ramay, M. L. ; Stolz, R. J. ; Tamashiro, R. N. ; Vaszari, J. P. ; Zhai, X. Abstract Publication: IEEE Transactions on Electron Devices Pub Date: May 2005 DOI: 10.1109/TED.2005.845842 Bibcode: 2005ITED...52..653C