A W-Band SPDT Switch with 15 dBm P1dB in 55-nm Bulk CMOS

Lisheng Chen, Lang Chen, Zeyu Ge, Yichuang Sun, Tara Hamilton, Xi Zhu

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Power-handling capability of bulk CMOS-based single-pole double-throw switch operating in millimetre-wave and sub-THz region is significantly limited by the reduced threshold voltage of deeply scaled transistors. A unique design technique based on impedance transformation network is presented in this work, which improves 1-dB compression point, namely P1dB, without deteriorating other performance. To prove the presented solution is valid, a 70-100 GHz switch is designed and implemented in a 55-nm bulk CMOS technology. At 90 GHz, it achieves a measured P1dB of 15 dBm, an insertion loss of 3.5 dB and an isolation of 18 dB. The total area of the chip is only 0.14 mm2.
Original languageEnglish
Number of pages4
JournalIEEE Microwave and Wireless Components Letters
Early online date25 Mar 2022
Publication statusE-pub ahead of print - 25 Mar 2022


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