Low-power 2.4 GHz ZigBee transceiver with inductor-less radio-frequency front-end for Internet of things applications

Low-power 2.4 GHz ZigBee transceiver with inductor-less radio-frequency front-end for Internet of things applications

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A fully integrated low-power 2.4 GHz ZigBee transceiver with inductor-less radio-frequency front-end in 180 nm complementary metal–oxide–semiconductor is presented. The proposed double push–pull low noise amplifier collaborates with a current-mode down-converter to provide wideband low-noise amplification, as well as the out-of-band blocker resilience. To save power, a sliding frequency synthesiser (FS) with a low-frequency running voltage controlled oscillator is employed to provide the local oscillation for both the receiver and transmitter. Measurement results show that the RX reaches −102 dBm sensitivity and dissipates 11 mA power. The FS achieves −91 dBc/Hz in-band phase noise with only 6.5 mA DC power. The TX features +7.6 dBm maximum output channel power, 4% error vector magnitude at the cost of 19.5 mA power.


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