Fully integrated 2.45‐GHz OOK receiver for wireless sensor networks |
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| Authors: | Cihun‐Siyong Alex Gong Chia‐Hung Chang Yu‐Lin Tsou |
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| Affiliation: | 1. Department of Electrical Engineering, School of Electrical and Computer Engineering, College of Engineering, Chang Gung University, Taoyuan, Taiwan;2. Portable Energy System Group, Green Technology Research Center, College of Engineering, Chang Gung University, Taoyuan, Taiwan;3. Chang Gung Memorial Hospital, Taoyuan, Taiwan;4. Department of Electrical Engineering, Chinese Culture University, Taipei, Taiwan;5. MediaTek, Hsinchu, Taiwan |
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| Abstract: | This paper introduces an optimized receiver architecture using the current‐reuse technique to improve receiver sensitivity while minimizing power consumption. An ISM band wireless receiver with OOK modulation was implemented in the TSMC 0.18‐µm CMOS process. The receiver contains an RF front end, an LC‐tank based LO VCO, an IF amplifier and an OOK demodulator. In addition, the IF amplifier features a self‐mixing elimination mechanism which allows the BER to upgrade more than one order of magnitude. Measurement results show a sensitivity of ?63 dBm given a BER of 10?3. Using the gain‐improving method, the sensitivity is improved by 4 dB (100‐kbps data rate). Including the bias circuit, overall power consumption is less than 383 μW under a 1.2‐V supply, providing an alternate solution for wireless radio applications. Copyright © 2016 John Wiley & Sons, Ltd. |
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| Keywords: | RF front end wireless sensor network sensitivity improvement wireless receiver |
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