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A Low-Power Complementary Metal-Oxide-Semiconductor Receiver with Quadrature Bandpass Continuous-Time Delta-Sigma

Nam-Seog Kim1

  • 1Department of Information and Communication Engineering, School of Electrical and Computer Engineering, Chungbuk National University, Cheongju-si 28644, Republic of Korea.

Sensors (Basel, Switzerland)
|April 28, 2025
PubMed

Keywords:
Bluetooth Low Energy (BLE)CMOSInternet of Things (IoT)complex bandpass ADCcontinuous-time delta–sigma ADCenergy efficiencyimage rejectionlow-IF architecturelow-power receiverwireless sensor networks (WSN)

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Sampling Continuous Time Signal

In signal processing, a continuous-time signal can be sampled using an impulse-train sampling technique, followed by the zero-order hold method. Impulse-train sampling involves the use of a periodic impulse train, which consists of a series of delta functions spaced at regular intervals determined by the sampling period. When a continuous-time signal is multiplied by this impulse train, it generates impulses with amplitudes corresponding to the signal's values at the sampling points.
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