A 32GHz Transformer Based Differential SPST CMOS switch
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초록
A 32GHz transformer based single-pole single-throw (SPST) switch is presented, that is integrated with a low noise amplifier (LNA) in a 65-nm bulk CMOS process. The proposed switch has a series resonance structure at shunt path between differential signal lines to increase isolation when the switch is in off state. It reduces the insertion loss of an entire system by embedding the post matching circuit (LNA input matching network) when the switch is in on state. The measured insertion loss difference between LNA and proposed SPST switch integrated LNA chip is less than 1.35 dB at 30-36 GHz, and the isolation is 25 dB at 32 GHz. The core area of SPST switch is 350 um x 220 um.
Abstract
A 32GHz transformer based single-pole single-throw (SPST) switch is presented, that is integrated with a low noise amplifier (LNA) in a 65-nm bulk CMOS process. The proposed switch has a series resonance structure at shunt path between differential signal lines to increase isolation when the switch is in off state. It reduces the insertion loss of an entire system by embedding the post matching circuit (LNA input matching network) when the switch is in on state. The measured insertion loss difference between LNA and proposed SPST switch integrated LNA chip is less than 1.35 dB at 30-36 GHz, and the isolation is 25 dB at 32 GHz. The core area of SPST switch is 350 um x 220 um.
참고문헌 (17)
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