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Wideband printed slot bowtie antenna using symmetric vias
Author(s) -
Mazaheri M. H.,
Amani N.,
Jafargholi A.
Publication year - 2016
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.29785
Subject(s) - wideband , stub (electronics) , coplanar waveguide , slot antenna , coaxial antenna , balun , microwave , antenna measurement , bandwidth (computing) , engineering , electrical engineering , antenna efficiency , microstrip antenna , electronic engineering , optics , antenna (radio) , physics , telecommunications
This letter presents a symmetrical slot‐type bowtie antenna with widened impedance bandwidth and high efficiency. Two symmetric vias are exploited underneath each slot in order to increase the antenna bandwidth up to 84% with simultaneous preservation of high efficiency (>90%), and low cross‐polarization (<−10 dB). The proposed antenna is fed with 50Ω ungrounded coplanar waveguide (CPW) with no need to balun insertion and tuning stub. The proposed antenna has low profile and simple structure in comparison with previous complex wideband bowtie antennas. The commercial CST Microwave Studio software is adopted for the simulations. The antenna is fabricated and measured, while good agreement is obtained between the simulation and measurement results. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:1301–1304, 2016