A new class of E-plane integrated millimeter-wave filters

A class of E-plane integrated-circuit millimeter-wave bandpass filters is introduced which provides high skirt selectivity by including inductively coupled stopband sections. The structure is simple and fully compatible with the E-plane manufacturing process and does not require fine-tuning elements. The design procedure is based on an efficient but rigorous modal S-matrix method including higher-order mode interactions and finite metallization thicknesses. Optimized design data are presented for 33 and 94 GHz in Ka- and W-band, respectively.<
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