TY - JOUR
T1 - DESIGN OF A COMPACT MODE CONVERTER WITH PERIODIC METALLIC OCTAGON STRUCTURE FOR HPM APPLICATIONS
AU - Yadav, Swati Varun
AU - Chittora, Ashish
N1 - Publisher Copyright:
© 2022 by Begell House, Inc.
PY - 2022
Y1 - 2022
N2 - A compact mode converter design for transverse magnetic (TM)/transvere electric (TE) (TM01-TE11) conversion is proposed. The design consists of a periodic metallic octagonal structure placed on a rectangular ridge in the lower-half section of a circular waveguide. In the simulation results, a maximum mode conversion efficiency of 98% was observed at an operating frequency of 3.2 GHz. The efficiency of the mode converter was greater than 90% over a bandwidth of 140 MHz. The mode conversion capability of the proposed structure was validated by measuring its far-field radiation pattern. The simulated and measured reflection coefficient with TM01 mode excitation at an input port was below -10 dB over a frequency range of 2.75-3.25 GHz. The proposed mode converter has high-power handling capability up to 300 MW. It is compact, symmetric, and lightweight, and has an easy to fabricate structure. Therefore, it can be used for airborne and portable high-power microwave systems.
AB - A compact mode converter design for transverse magnetic (TM)/transvere electric (TE) (TM01-TE11) conversion is proposed. The design consists of a periodic metallic octagonal structure placed on a rectangular ridge in the lower-half section of a circular waveguide. In the simulation results, a maximum mode conversion efficiency of 98% was observed at an operating frequency of 3.2 GHz. The efficiency of the mode converter was greater than 90% over a bandwidth of 140 MHz. The mode conversion capability of the proposed structure was validated by measuring its far-field radiation pattern. The simulated and measured reflection coefficient with TM01 mode excitation at an input port was below -10 dB over a frequency range of 2.75-3.25 GHz. The proposed mode converter has high-power handling capability up to 300 MW. It is compact, symmetric, and lightweight, and has an easy to fabricate structure. Therefore, it can be used for airborne and portable high-power microwave systems.
UR - https://www.scopus.com/pages/publications/85131365902
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U2 - 10.1615/TELECOMRADENG.2022038149
DO - 10.1615/TELECOMRADENG.2022038149
M3 - Article
AN - SCOPUS:85131365902
SN - 0040-2508
VL - 81
SP - 11
EP - 20
JO - Telecommunications and Radio Engineering (English translation of Elektrosvyaz and Radiotekhnika)
JF - Telecommunications and Radio Engineering (English translation of Elektrosvyaz and Radiotekhnika)
IS - 1
ER -