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Mathematical Problems in Engineering
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Mathematical Problems in Engineering
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2014
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Article
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Fig 6
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Research Article
Investigation of Compact Balun-Bandpass Filter Using Folded Open-Loop Ring Resonators and Microstrip Lines
Figure 6
(a) Layout pattern and (b) photograph of the designed balun BPF with about 100-Ω balanced impedance.
(a)
(b)