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Pin‐loaded triple‐mode patch resonator for bandpass filter design
Author(s) -
Qiu LeiLei,
Zhu Lei
Publication year - 2020
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.32069
Subject(s) - resonator , band pass filter , offset (computer science) , acoustics , degenerate energy levels , filter (signal processing) , materials science , mode (computer interface) , insertion loss , physics , electronic engineering , engineering , optoelectronics , electrical engineering , computer science , operating system , quantum mechanics , programming language
In this letter, a pin‐loaded triple‐mode square patch resonator is proposed for bandpass filter (BPF) design. By loading short‐circuited pins underneath the patch, the patch resonator not only enables DC‐blocking, but also brings out one additional resonant mode, thus a triple‐mode patch resonator can be formed up under operation with a pair of degenerate modes. According to the field distributions, these three resonant modes can be tuned by virtue of loaded slots and pins, while these two degenerate modes can be properly split by offset‐positioning the two sets of pins. In final, a pin‐loaded triple‐mode patch BPF is designed, fabricated and measured to validate the predicted results.