A Ka-Band Angular Log-Periodic Meander-Line SWS Supported by Diamond Rods
At a Glance
Section titled “At a Glance”| Metadata | Details |
|---|---|
| Publication Date | 2022-01-19 |
| Journal | IEEE Transactions on Electron Devices |
| Authors | Zhanliang Wang, Xing Liu, Qiang Hu, Yubin Gong, Zhaoyun Duan |
| Institutions | Beijing Vaccum Electronic Research Institute, University of Electronic Science and Technology of China |
| Citations | 7 |
Abstract
Section titled “Abstract”The angular log-periodic meander-line traveling wave tube (TWT) is a kind of low voltage, small-sized, high power, low cost, on chip amplifiers, and considered as a key part of the advanced communication systems, the future biomedical applications and the next electronic counter measure (ECM) instruments <italic xmlns:mml=“http://www.w3.org/1998/Math/MathML” xmlns:xlink=“http://www.w3.org/1999/xlink”>et al.</i> Here, an angular log-periodic meander-line TWT is presented in this article. The angular log-periodic meander-line slow wave structure (SWS) is supported by two diamond rods. The dispersion and the impedance characteristics are analyzed in detail. In order to reduce the reflection loss, a gradual ridged waveguide is connecting the input-output standard rectangular waveguide to the meander-line SWS. The particle in cell (PIC) simulations show that the output power of the TWT can reach 55 W at 34 GHz with the operation voltage of 1800 V and the beam current of 0.2 A. The SWS is manufactured by a laser machine with Molybdenum sheet. The assembled TWT is tested and the results show that the <inline-formula xmlns:mml=“http://www.w3.org/1998/Math/MathML” xmlns:xlink=“http://www.w3.org/1999/xlink”> <tex-math notation=“LaTeX”>${S}{{11}}$ </tex-math></inline-formula> is less than −10 dB at 30-39 GHz. The <inline-formula xmlns:mml=“http://www.w3.org/1998/Math/MathML” xmlns:xlink=“http://www.w3.org/1999/xlink”> <tex-math notation=“LaTeX”>${S}{{21}}$ </tex-math></inline-formula> mismatch between the simulated and the measurement is discussed at the end.