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In this work, we propose a novel millimeter-wave SIW bandpass filter (BPF) that combines the technology of E-plane iris filter, SIW and LTCC. This filter with equivalent E-plane iris mounted in SIW is buried in LTCC substrates, and has a pass bandwidth from 34.1GHz to 35.9GHz. The insertion loss is less than 1.8dB and the return loss is better than 21dB in the entire pass band.
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