Back to results
US 12,413,258 B2Granted
Wireless receiver apparatus and method
AssigneeEveractive, Inc.
InventorKuo-Ken Huang
Life of this patent
Estimating the term…
Abstract
Embodiments of the invention include a wakeup receiver (WRX) featuring a charge-domain analog front end (AFE) with parallel radio frequency (RF) rectifier, charge-transfer summation amplifier (CTSA), and successive approximation analog-to-digital converter (SAR ADC) stages. The WRX operates at very low power and exhibits above-average sensitivity, random pulsed interferer rejections, and yield over process.
Claims14
An ultra low-wakeup receiver (WRX) system, comprising:
- a matching network that receives signals from an antenna in a sensor network and outputs signals on a main RF signal from the antenna and a dummy signal from a broadband load, wherein the main RF signal and the dummy signal form a pseudo-differential signal that improves common-mode rejection;
- and
- an on-chip WRX comprising a charge-domain analog front end (AFE) configured to receive the pseudo-differential signal, and to output to the sensor network a fast wakeup signal and a secure wakeup signal, wherein the WRX operates at very low power, exhibits above-average sensitivity, and accomplishes random pulsed interferer rejections.
Dependencies are inferred from the claim text.