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An Empty LTCC (Low Temperature Cofired Ceramics) Integrated Waveguide (E-LIW) for the 57-64 GHz band is proposed. In addition to being air-filled, this SIW-like structure uses long rectangular side-wall vias to reduce conductor and radiation losses. In simulation, the proposed structure shows an insertion loss of 0.084 dB/cm at 60 GHz compared to 0.325 dB/cm, when the same structure is dielectric...
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