Microfabrication and cold testing of copper circuits for a 50-watt 220-GHz traveling wave tube

Colin D. Joye; Alan M. Cook; Jeffrey P. Calame; David K. Abe; Alexander N. Vlasov; Igor A. Chernyavskiy; Khanh T. Nguyen; Edward L. Wright

doi:10.1117/12.2012074

27 March 2013 Microfabrication and cold testing of copper circuits for a 50-watt 220-GHz traveling wave tube

Colin D. Joye, Alan M. Cook, Jeffrey P. Calame, David K. Abe, Alexander N. Vlasov, Igor A. Chernyavskiy, Khanh T. Nguyen, Edward L. Wright

Author Affiliations +

Proceedings Volume 8624, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications VI; 862406 (2013) https://doi.org/10.1117/12.2012074
Event: SPIE OPTO, 2013, San Francisco, California, United States

Abstract

We present the microfabrication and cold test measurement results of serpentine waveguide amplifier circuits at 220 GHz. The circuits were fabricated using a novel embedded polymer monofilament technique combined with Ultraviolet- LIGA to simultaneously create both the beam tunnel and interaction circuits. We find remarkable characteristic matches between the measurements of the best circuits, illustrating that the process developed is able to create repeatable, highly precise circuits with high yield. It was found that slight beam tunnel misalignment can cause very strong stopbands to appear in the operating band due to bi- or quasi-periodicity. The NRL code TESLA-SW/FW has been used to rapidly simulate the as-built structure under a variety of conditions to accurately predict the performance with an electron beam. The tolerances needed on beam tunnel alignment are studied, with implications extending to the THz range.

Citation Download Citation

Colin D. Joye, Alan M. Cook, Jeffrey P. Calame, David K. Abe, Alexander N. Vlasov, Igor A. Chernyavskiy, Khanh T. Nguyen, and Edward L. Wright "Microfabrication and cold testing of copper circuits for a 50-watt 220-GHz traveling wave tube", Proc. SPIE 8624, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications VI, 862406 (27 March 2013); https://doi.org/10.1117/12.2012074

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available