论文信息 - A Thru-Halfthru-Short De-Embedding Method for Millimeter-Wave On-Wafer HBT Characterization

A Thru-Halfthru-Short De-Embedding Method for Millimeter-Wave On-Wafer HBT Characterization

In this letter, a cascade-based de-embedding method with thru-halfthru-short structures is presented for millimeter-wave on-wafer device characterization. Distributed effects of interconnect, discontinuity between pad and interconnect, and transistor-access-via-holes are all well considered using only three dummy structures, and forward coupling is also investigated. By providing both extracted junction capacitors and S-parameter results of 0.5-<inline-formula> <tex-math notation="LaTeX">$\mu \text{m}$ </tex-math></inline-formula> InP DHBT transistor using proposed and existing de-embedding methods up to 220 GHz, better high frequency performance and particularly 21° improvement in phase accuracy for <inline-formula> <tex-math notation="LaTeX">${\text {S}}_{11}$ </tex-math></inline-formula> as well as 12° for <inline-formula> <tex-math notation="LaTeX">${\text {S}}_{21}$ </tex-math></inline-formula> at 220 GHz are obtained compared with the state-of-the-art cascade-based method.

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