期刊
IEEE MICROWAVE AND WIRELESS TECHNOLOGY LETTERS
卷 33, 期 9, 页码 1258-1261出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LMWT.2023.3283304
关键词
Backend-of-line (BEOL); millimeter-wave (mmW); SiGe BiCMOS process; substrate-integrated waveguide (SIW)
This letter presents the first 200-330 GHz SIW to GCPW transition realized in the backend of a SiGe BiCMOS process. The transition achieves a quasi-TE10 to quasi-TEM mode conversion with a highest operating frequency of 330 GHz, a largest operation bandwidth of 49%, and the smallest transition length of 99 μm for a silicon process-based SIW transition demonstrated to date. The measured S-parameters and de-embedded results show that the transition operates from 200 to 330 GHz with an average insertion loss of approximately 1.2 dB.
This letter shows the first 200-330-GHz substrate-integrated waveguide (SIW) to a grounded coplanar waveguide (GCPW) transition realized in backend-of-line (BEOL) of a SiGe BiCMOS process. The transition uses two rectangular slots and a GCPW stub, which convert a quasi-TE10 to quasi-TEM mode with the highest operating frequency of up to 330 GHz, largest operation bandwidth of 49%, and smallest transition length of 99 mu m for a silicon process-based SIW transition demonstrated to date. A back-to-back configuration with ground-signal-ground (GSG) pads on either end enables probe-based S-parameter measurement. The influence of the GSG pads is de-embedded by measuring a 50-Omega GCPW connected by a pair of the GSG pads. A comparison of the measured and de-embedded S-parameters with the electromagnetic simulation results show that the SIW-GCPW transition operates from 200 to 330 GHz (49% bandwidth) with an average insertion loss of approximate to 1.2 dB per transition.
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