Abstract
This study presents the design and simulation of a novel type of TM01-TE01 mode converter for high-power microwave applications, which efficiently converts the TM01 circular waveguide mode into the TE01 circular waveguide mode. The converter is composed of three sections: power-dividing section, twist-waveguide section and power-combining section. These sections were analyzed and discussed respectively, and the whole converter structure was studied numerically. The results show that at the central frequency 12.5 GHz, the TM01-TE01 conversion loss of the converter made of aluminum is 0.05 dB and the bandwidth for S21 > 0.25 dB is 2.73 GHz. Moreover, the power-handling capacity is over 2 GW.
Highlights
In high-power microwave (HPM) domain, owing to that the output modes of most HPM tubes are TM01,2–5 it is essential to design a high powerhandling capacity TM01-TE01 converter in applications
Mode conversions from TM01 to TE01 with high power-handling capability usually have to be realized by using serpentine waveguides or corrugated waveguides with TE11 or TM11 as the interim modes
When TM01 mode is injected from the input port of the converter, the microwave propagating in the converter undergoes the following mode conversions: firstly, the TM01 mode is transformed into N (N=8 in Fig. 1) ways of TE10 rectangular waveguide mode by the power-dividing section; after the N ways of TE10 modes transmitting through the twist waveguides, each polarization of the TE10 mode would be rotated by 90○; lastly, N ways of the TE10 mode with the electric polarizations vertical to the axis of the output circular waveguide will pool a TE01 circular waveguide mode through the power-combining section
Summary
The TE01 circular waveguide mode, featuring azimuthally symmetric electric field and low wall loss, has drawn much attention in relation to a variety of applications, such as long-distance transmission or certain types of pulse compression schemes. In high-power microwave (HPM) domain, owing to that the output modes of most HPM tubes are TM01,2–5 it is essential to design a high powerhandling capacity TM01-TE01 converter in applications. In high-power microwave (HPM) domain, owing to that the output modes of most HPM tubes are TM01,2–5 it is essential to design a high powerhandling capacity TM01-TE01 converter in applications. Many researches have been carried out on TM01-TE11(TM11) or TE11(TM11)-TE01 mode converters, respectively.. We have designed a TM01-TE01 converter by using TE11 and TM11 as interim modes.. A novel cage-like structure of TM01-TE01 mode converter is proposed and investigated, which has the merits of compactness, high power-handling capacity, high efficiency, and wider bandwidth. A Ku-band cage-like TM01-TE01 mode converter centered at 12.5 GHz is designed and simulated, and will be discussed of the paper
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
