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A compact wide-band bandpass filter (BPF) using the degenerate modes of a meander structure printed on the FR4 substrate is proposed. The resonator is based on a capacitive meander loop loaded with a perturbation strip at the center of the resonator for the coupling effects. Besides its simple structure, the filter shows low insertion loss and minified to small size, owing to the meander structure...
A novel simplified miniature dual-mode bandpass filter of the triangular patch with an inverted T- and H-shaped slot is investigated. The characteristics of mode splitting have been described. The proposed filter has been designed and fabricated on the Al2O3 substrate and has a small size, effective feeding structure, which is suitable for use in WLAN applications.
A dual-mode bandpass filter using the degenerate modes of a modified square ring structure printed on the high-permittivity substrate is proposed. The dual-mode resonator is based on a square ring loaded with a cross-strip. The filter is printed on the Al2O3 substrate with a permittivity of 9.8 and could be easily integrated with radio frequency circuits. Besides its simple structure, the filter shows...
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