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- Title
Compact interdigital filters with transmission zeros in LTCC technology.
- Authors
López‐Berrocal, B.; de‐Oliva‐Rubio, J.; Molina‐Fernández, I.; Montejo‐Garai, José R.
- Abstract
ABSTRACT This article presents a simple topology for the implementation of cross-couplings between nonadjacent resonators in interdigital stripline filters. This topology affords the inclusion of transmission zeros maintaining a cross-sectional structure similar to that of a stripline. Therefore, the manufacturing cost is very close to an all-pole prototype. Two design strategies for the coupling structure are discussed: one of them achieving filters with enhanced performance. Both strategies have been assessed implementing prototypes in low-temperature cofired ceramic (LTCC) technology. The fabricated filters exhibit operating frequencies at 5775 MHz and 8000 MHz with 2.6% and 3.75% pass-band fractional bandwidths, respectively, and up to 60 dB IL in the rejection band. © 2014 Wiley Periodicals, Inc. Int J RF and Microwave CAE 24:560-570, 2014.
- Subjects
ELECTRIC filters; TRANSMISSION zeros; LOW Temperature Cofired Ceramic technology; TOPOLOGY; BANDWIDTHS
- Publication
International Journal of RF & Microwave Computer-Aided Engineering, 2014, Vol 24, Issue 5, p560
- ISSN
1096-4290
- Publication type
Article
- DOI
10.1002/mmce.20799