A 1.9 GHz CMOS High Isolation Absorptive OOK Modulator


This letter presents a high-isolation absorptive 1.9 GHz on-off keying (OOK) modulator in 90 nm CMOS process. The RF leakage-canceling technique is developed to suppress the RF leakage by combining it with its inverse duplicate at the output. The rework-typed baluns are used for the input and output matching such that the modulator input and output come losses amendment solely slightly between the on and off states. The measured off-isolation of the CMOS OOK modulator is more than thirty-nine.two dB and also the modulator has the on-state signal gain of dB.

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