This article presents two novel architectures of dual-band substrate integrated waveguide (SIW) bandpass filters (BPFs). Initially, two identical open-loop ring resonators (OLRRs) are coupled face-to-face on the top of the SIW cavity to realize a dual-band single-pole BPF. To obtain two-pole dual-band characteristics, two OLRRs resonant units are assembled horizontally within the top metal layer of the SIW, which is a technique used for the first time in the literature. For demonstration purposes, two types of SIW filters loaded with OLRRs are designed and fabricated. The proposed filters feature an extremely compact size, a low insertion loss, and good selectivity. The single- and two-pole filters have an overall size of 0.012λg2 and 0.041λg2, respectively. The simulated and measured circuit responses are in good agreement.
Authors
- Nrusingha Pradhan,
- prof. dr inż. Sławomir Kozieł link open in new tab ,
- Rusan Kumar Barik,
- dr hab. inż. Anna Pietrenko-Dąbrowska link open in new tab ,
- Karthikeyan Subramanian
Additional information
- DOI
- Digital Object Identifier link open in new tab 10.3390/electronics12183974
- Category
- Publikacja w czasopiśmie
- Type
- artykuły w czasopismach
- Language
- angielski
- Publication year
- 2023
