Miniaturized high-frequency high-order-mode harmonic suppression waveguide filter

• Main Authors: LUO MING, XIA ZHIYUAN, YUAN XINGWU, LUO JINGPING, JIANG YUNSHI, WANG QINGQING, WANG BIN
• Format: Patent
• Language: Chinese; English
• Published: 20.09.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE; WAVEGUIDES

The invention discloses a miniaturized high-frequency high-order mode harmonic suppression waveguide filter, which belongs to the technical field of microwave components and comprises a straight waveguide section (1), two full-size coupling cavities (2) are symmetrically arranged at the left end and the right end of the middle of the straight waveguide section (1), and a plurality of incomplete-size coupling cavities B (5) are arranged between the two full-size coupling cavities (2). One side of the incomplete-size coupling cavity B (5) is flush with the complete-size coupling cavity (2); on the basis of the low-pass filter, the coupling cavity with the waveguide wide edge size changing is additionally arranged, through the wide edge size changing of the coupling cavity, on the condition that the requirement for TE10 mode and TE01 mode absorption is met, propagation of a TE20 mode in a waveguide system is effectively restrained, efficient restraining of high-frequency high-order mode harmonic waves in the wav