Quasi-Optic Based HE11 Miter Bend at 42GHz for ECRH Application.

Autor: Patel, Amit, Bhatt, Pujita, Mahant, Keyur, Vala, Alpesh, Chaudhari, Jitendra, Mewada, Hiren, Sathyanarayana
Předmět:
Zdroj: Progress in Electromagnetics Research C; 2021, Vol. 108, p37-48, 12p
Abstrakt: This paper presents the design and fabrication of HE11 miter bend along with a TM11 to HE11 mode converter and corrugated up-taper, which are the integral parts of a transmission line system (TLS) that carries 200 kW microwave power at 42 GHz from Gyrotron to plasma or calorimetric dummy load. It has a hybrid (HE11) mode. The HE11 mode transmission loss in miter bend is derived using mode-matching techniques and gap loss theory. The gap length (L) in a waveguide of diameter (D = 2a) at a wavelength (λ) for the predicted loss (D = λ) is approximately 1.7[ Lλ/2a²]3/2 dB. The HE11 miter bend design incorporates a demountable cooling assembly with a flat mirror. The design and optimization of the proposed miter bend were carried out using CST-microwave studio software. Finally, HE11 miter bend was fabricated along with integrated assembly. The proposed HE11 miter bend with mode converter and corrugated up-taper gives the transmission efficiency of 95.64%. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index