A -80.9dBm 450MHz Wake-Up Receiver with Code-Domain Matched Filtering using a Continuous-Time Analog Correlator
| Autor: | Peter R. Kinget, Vivek Mangal |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Computer science
Matched filter 020208 electrical & electronic engineering 020206 networking & telecommunications 02 engineering and technology Analog signal processing Interference (communication) Asynchronous communication Integrator 0202 electrical engineering electronic engineering information engineering Baseband Electronic engineering Barker code Sensitivity (electronics) |
| Zdroj: | Publons |
| DOI: | 10.1109/rfic.2019.8701822 |
| Popis: | A continuous-time, clockless analog correlator uses pulse-position-encoded analog signal processing with VCOs as integrators and pulse-controlled relaxation delays; it operates as a matched filter to despread asynchronous wake-up codes. A correlator prototype has been designed in 65nm CMOS-LP technology, consumes 37nW from 0.54V, and performs code-domain filtering with an 11-bit Barker code for a wake-up receiver. The hardware of the proposed n-bit correlator architecture scales with O(n) compared to O(n2) for asynchronous switched-capacitor correlators. A -80.9dBm 40nW wake-up receiver with 9dB better sensitivity and 3dB improved selectivity to AM interference thanks to the correlator is demonstrated. |
| Databáze: | OpenAIRE |
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