Journal
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS
Volume 26, Issue 7, Pages 484-486Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LMWC.2016.2574818
Keywords
Compact resonators; dual-band filter; E-plane filter; high selectivity; waveguide filter
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Funding
- National Key Basic Research Program of the Ministry of Science and Technology of China (973 Program) [2014CB339900]
- National Natural Science Foundation of China (NSFC) [61372056, 61571084]
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This paper presents a novel dual-band bandpass waveguide E-plane filter using three pairs of resonators. In this configuration, two pairs of resonators are on the top of the substrate and the last pair is at the bottom. The length of proposed filter is less than 0.14 lambda(gL) or 0.17 lambda(gH) (lambda(gL) and lambda(gH) are standard waveguide wavelengths of the first and second passbands, respectively). Two passbands are designed flexibly with high selectivity and low insertion loss. A sample of the proposed dual-band filter is fabricated and tested. Good agreement between the simulation and measurement results is achieved. This kind of dual-band waveguide filter has benefits of low cost and mass production.
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