In this letter, a novel transition from microstrip (MS) line to empty substrate-integrated waveguide (ESIW) with tapered artificial dielectric slab matrix in compact size is proposed. ESIW exhibits effective characteristics for energy transmission, especially in the millimeter waveband, due to the loss of dielectric. Recently, an MS to ESIW transition without sharp dielectric taper is achieved through an expanded ESIW width. Manufacturing and assembling difficulties can be overcome in this kind of transition, especially for a small thickness. In this letter, in order to apply in thin substrate with a compact size, especially in millimeter waveband, a novel robust transition from MS line to ESIW (with the tapered artificial dielectric slab matrix) is designed, fabricated, and measured in back-to-back configuration. In Ka-band, the return loss and insertion loss for one transition are better than 14.7 and − 0.46 ± 0.17 dB, respectively.

中文翻译：

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使用锥形人工介电板矩阵的鲁棒微带到空基板集成波导过渡

在这封信中，提出了一种从微带线 (MS) 线到空基板集成波导 (ESIW) 的新型过渡，其具有紧凑尺寸的锥形人造介电板矩阵。由于电介质的损耗，ESIW 表现出有效的能量传输特性，特别是在毫米波段。最近，通过扩大 ESIW 宽度实现了没有急剧电介质锥度的 MS 到 ESIW 过渡。这种过渡可以克服制造和组装的困难，特别是对于小厚度。在这封信中，为了应用于尺寸紧凑的薄基板，特别是在毫米波段，设计、制造和测量了从 MS 线到 ESIW（具有锥形人造介电板矩阵）的新型稳健过渡。 - 返回配置。在 Ka 波段，