Design of dual‐mode dual‐band rectangular waveguide filtering antenna

A dual‐mode dual‐band rectangular waveguide filtering antenna with fourth‐order Chebyshev response is presented. First, design equations and processes of filtering networks are presented. Then, filtering antenna is constructed through cross‐shaped slot for radiation instead of the output port of fil...

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Bibliographic Details
Published inInternational journal of RF and microwave computer-aided engineering Vol. 29; no. 7; pp. e21727 - n/a
Main Authors Wu, Zixian, Chen, Jianzhong, Zhang, Anxue, Lu, Xinru, Zhang, Xiaoke
Format Journal Article
LanguageEnglish
Published Hoboken, USA John Wiley & Sons, Inc 01.07.2019
Hindawi Limited
Subjects
Antennas
Bandwidths
Chebyshev approximation
degenerated mode
dual‐band filter
filtering antenna
Filtration
Rectangular waveguides
Rejection
waveguide filter
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Summary:A dual‐mode dual‐band rectangular waveguide filtering antenna with fourth‐order Chebyshev response is presented. First, design equations and processes of filtering networks are presented. Then, filtering antenna is constructed through cross‐shaped slot for radiation instead of the output port of filtering networks. A pair of degenerated modes are exploited in waveguide resonator design to miniaturize the whole size and form two passbands. In addition, the bandwidth can be adjusted flexibly in proper range. A prototype at C‐band is fabricated and measured, showing two operation channels of 5 to 5.05 GHz and 5.1 to 5.15 GHz with high rejection between two bands. Good agreement is achieved between the simulations and measurements, showing excellent performance in terms of filtering, out‐of‐band rejection, and gain in bands.
ISSN:1096-4290
1099-047X
DOI:10.1002/mmce.21727