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Broadband Slot-Type Bruce Array Fed by a Microstrip-to-Slotline T-Junction

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1 Author(s)
Shih-Yuan Chen ; Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei

In this letter, the slot-type Bruce array is proposed and investigated based on its wire counterpart. A broadband microstrip-to-slotline T-junction is employed to feed the antenna because of less radiation loss and the planar structure without air bridges compared to the slotline-fed and the coplanar-waveguide-fed cases. A 5-6 GHz prototype antenna having seven radiating slotline segments is designed, implemented, and tested. A wide operating bandwidth, moderate gains, and satisfactorily low cross-polarized radiation are observed, verifying the feasibility of the proposed design.

Published in:

Antennas and Wireless Propagation Letters, IEEE  (Volume:8 )