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A Same-Channel Full-Duplex Receiver Using Direct RF Sampling
Published in Institute of Electrical and Electronics Engineers Inc.
2018
Volume: 2018-May
   
Abstract
Time selective sampling is capable of eliminating strong interference signals without requiring a high linearity receiver front-end. This can be used to implement a full-duplex transceiver front-end by sampling the weak received signal at the zero-crossings of the strong transmitted signal. In this work, we propose a circuit technique to directly sample the received RF signal at the antenna port by exploiting implicit voltage-to-delay conversion occurring in a full-duplex system. The sampler is implemented in a 65 nm CMOS process, and simulation results show a sensitivity of -67 dBm in the presence of a +5.5 dBm Tx signal. The received signal has a 10 MHz bandwidth, and the overall receiver consumes 33.2 mW from a 1.2 V power supply. © 2018 IEEE.
About the journal
JournalData powered by TypesetProceedings - IEEE International Symposium on Circuits and Systems
PublisherData powered by TypesetInstitute of Electrical and Electronics Engineers Inc.
ISSN02714310
Open AccessNo
Concepts (12)
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    Antennas
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    Delay circuits
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    Radio transceivers
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    Circuit techniques
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    FULL-DUPLEX
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    Nonuniform sampling
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    Received signals
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    Receiver front-ends
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    RF SAMPLING
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    STRONG INTERFERENCE
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    Transmitted signal
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    Signal sampling