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The first CMOS nonreciprocal transmission line (TL) for wideband tunable full-duplex transceiver front ends, having over 45 dB isolation in a bandwidth of 1.5 GHz and tuning range of 85–110 GHz, is demonstrated. Offering tunable nonreciprocal propagation, this structure is based on a parametric time-varying TL modulated by a 10 GHz signal through distributed capacitive mixing. Two capacitive mixers...
A low-power CMOS mmWave passive mixer based on a novel LO shaping technique using non-linear transmission line (NLTL) is proposed. The mixer employs a non-return-to-zero (NRZ) capacitive loaded sampling structure. The LO signal is reshaped by an NLTL before it is applied to the mixer, which alleviates the tradeoff between the mixer gain and linearity and decreases the noise figure (NF). The NLTL is...
A novel integrated high-voltage linear power amplifier for medical ultrasonic transmitter applications is presented in this brief. The amplifier employs a current-feedback technique with two cascading push–pull class-AB buffers. It overcomes the gain–bandwidth product limitation of a conventional voltage-feedback amplifier, capable of generating high output signal swing with a wide closed-loop bandwidth...
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