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6CCVD Research

Wideband Output Brewster Window for Terahertz TWT Amplifiers Application

At a Glance

Section titled ā€œAt a Glanceā€
MetadataDetails
Publication Date2021-01-09
JournalIEEE Microwave and Wireless Components Letters
AuthorsJuanā€Feng Zhu, Chaoā€Hai Du, Luyao Bao, Ziā€Wen Zhang, Puā€Kun Liu
InstitutionsPeking University
Citations6

Abstract

Section titled ā€œAbstractā€

A wideband terahertz (THz) output network consisting of a pyramidal horn and a diamond Brewster window has been developed for 0.7-1.0-THz traveling-wave tube (TWT) amplifier and is measured at 0.325-0.5 THz owing to the limitation of the measurement facility. A pyramidal horn is designed to convert the waveguide mode into a high-purity quasi-plane polarized mode to meet the demand of the Brewster window. A diamond Brewster window plate with low THz transmission loss is fabricated via chemical vapor deposition (CVD). The plate is directly placed on the pyramidal horn with a Brewster angle. A circular window plate supporter is intended to balance the stress distribution during diamond-metal brazing. The measurement shows transmission coefficient is better than 0.85 within a wide bandwidth of 0.325-0.5 THz. This letter provides a practical way for a single diamond window structure for THz TWT amplifiers.

Tech Support

Section titled ā€œTech Supportā€

Original Source

Section titled ā€œOriginal Sourceā€

References

Section titled ā€œReferencesā€
  1. 2008 - A broadband microwave window for W-band TWT

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