Millimeter-Wave Band Evaluation of Transmission Loss and its Effects on Antenna Efficiency in Post-Wall Waveguide Slot Arrays

摘要

The authors estimate the transmission losses per unit length by measuring the losses of microstrip lines and post-wall waveguides on substrates with different thickness in the millimeter waveband. Compared the experimental losses with the simulated results, the frequency dependence of the effective conductivity and the complex permittivity obtained by a whispering gallery (WG) mode resonator method are confirmed. The effects of the transmission loss on the antenna efficiency are discussed by measurements with different sizes of post-wall waveguide-fed parallel plate slot arrays.%著者らは異なる厚さの基板でマイクロストリップ線路とポスト壁導波路の損失を測定し単位長さのミリ波帯伝送損失を求めた。実験結果と解析結果を比べることで、ウイスパリングギャラリー共振器法により求めた基板の銅箔の実効導電率と誘電体の複素誘電率の値を確認した。また、異なる大きさのポスト壁導波路給電平行平板スロットアンテナの効率を測定し、伝送損失がアンテナ効率に与える影響を評価した。