access icon free Substrate integrated waveguide quasi-elliptic bandpass filter with parallel coupled microstrip resonator

A quasi-elliptic bandpass filter has been designated based on substrate integrated waveguide cavity and parallel-coupled microstrip line (PCML). Two PCMLs are utilised to provide cross-coupling at both sides of the investigated filter. Electrical coupling intensity in the filter can be controlled by the proposed PCMLs which generate transmission zeros at sides of pass-band. Sharp sideband and significant out-of-band rejection are achieved.

Inspec keywords: microstrip resonators; resonator filters; microstrip filters; substrate integrated waveguides; elliptic filters; microstrip lines; band-pass filters

Other keywords: parallel-coupled microstrip line; substrate integrated waveguide cavity; electrical coupling intensity; quasielliptic bandpass filter; cross-coupling; transmission zeros; parallel coupled microstrip resonator; PCML

Subjects: Waveguides and microwave transmission lines; Waveguide and microwave transmission line components; Passive filters and other passive networks

References

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      • 7. Chen, C.J.: ‘A coupled-line coupling structure for the design of quasi-elliptic bandpass filters’, Trans. Microw. Theory Tech., 2018, pp, (99), pp. 15.
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      • 15. Wong, S.W., Chen, R.S., Lin, J.Y., et al: ‘Substrate integrated waveguide quasi-elliptic filter using slot-coupled and microstrip-line cross-coupled structures’, Trans. Compon. Packag. Manuf. Technol., 2016, 6, (12), pp. 18811888.
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http://iet.metastore.ingenta.com/content/journals/10.1049/el.2018.0170
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content/journals/10.1049/el.2018.0170
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