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This paper presents a non-contact memory card and a host employing simultaneous data and power transmission through inductive coupling. Nested clover-shaped data coils are proposed for reducing interference from a power link. The host wirelessly tracks current consumption of the card and adjusts transmit power to improve power transfer efficiency. The prototype is implemented in 65nm CMOS. It achieves...
This paper reports a highly linear RF sampler with wide operating frequency range and power supply range. A clock bootstrapping circuit is proposed to decrease both the on-resistance and off-leakage of advanced MOSFETs while considering the device reliability. The proposed RF sampler circuit has been implemented in 90 nm CMOS process, and excellent IIP3 has been obtained at wide frequency range up...
This paper presents a novel impulse radio based ultra-wideband transmitter. The transmitter is designed in 0.18 mum CMOS process realizing extremely low complexity and low power. It exploits the 6-to-10 GHz band to generate short duration bi-phase modulated UWB pulses with a center frequency of 8 GHz. No additional RF filtering circuits are required since the pulse generator circuit itself has the...
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