In this letter, a broadband waveguide-to-coplanar waveguide with ground transition for large-chip-width substrate operating within terahertz frequencies is demonstrated. This transition adopts an integrated dipole antenna with coupling branches and disks topology. This compact transition reduces parasitic effects by wire bonding and is suitable for direct integration with terahertz monolithic integrated circuits, and it enables low energy conversion loss over a wide frequency band. The transition was fabricated on a 970 μm wide substrate by the 50 μm thick InP technology and designed for WR-4.3 standard waveguide (546 μm width). The measured results show that the bandwidth with 1 dB insertion loss per antenna is as wide as 80 GHz, and the in-band return loss is better than 10 dB.

中文翻译：

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具有带宽增强的集成偶极天线，用于太赫兹波导到 CPWG 的过渡

在这封信中，展示了一种宽带波导到共面波导，具有接地过渡，用于在太赫兹频率内运行的大芯片宽度基板。这种过渡采用具有耦合分支和圆盘拓扑结构的集成偶极天线。这种紧凑的过渡通过引线键合减少了寄生效应，适合与太赫兹单片集成电路直接集成，并且可以在宽频带上实现低能量转换损耗。过渡是通过 50 μm 厚的 InP 技术在 970 μm 宽的衬底上制造的，并设计用于 WR-4.3 标准波导（546 μm 宽）。实测结果表明，每根天线插入损耗为1 dB的带宽可达80 GHz，带内回波损耗优于10 dB。