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A 433 MHz −104 dBm OOK/ASK receiver with the dynamic range of 95 dB in 0.18-µm CMOS process

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Abstract

A 433 MHz −104 dBm OOK/ASK receiver with offset-peak-detecting demodulation technique has been proposed and implemented in 0.18-µm CMOS process in this paper. The offset-peak-detecting technique enhances the receiver robustness under the existence of interferences and thus improves the sensitivity. This technique also guarantees a prompt setting process of the data slicer. A passive-mixer based front-end with low noise figure and high conversion gain is employed in the receiver to reduce the noise figure. The LO signal is generated by a 433 MHz SAW oscillator. An active balun is used to convert the single-ended LO signal to differential signal which is necessary for the performance of the mixer. The receiver achieves a sensitivity of −104 dBm and a dynamic range of 95 dB at the data rate of 20 kbps. The receiver consumes a quiescent current of 4 mA under the supply voltage from 2.1 to 3.3 V.

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Acknowledgments

This work was supported by the National Natural Science Foundation of China (Nos. 61176031 and 61401090), and the Key Natural Science Foundation of Jiangsu Province of China (BK20111018).

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Correspondence to Cheng Huang.

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Wu, J., Chen, C. & Huang, C. A 433 MHz −104 dBm OOK/ASK receiver with the dynamic range of 95 dB in 0.18-µm CMOS process. Analog Integr Circ Sig Process 82, 189–196 (2015). https://doi.org/10.1007/s10470-014-0466-y

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  • DOI: https://doi.org/10.1007/s10470-014-0466-y

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