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US 11,689,230 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.
Claims20
A system for radio frequency (RF) signal to baseband conversion, comprising:
- an RF rectifier circuit configured to receive an RF signal, wherein the RF rectifier processes the received RF signal as multiple signal paths M;
- an amplifier circuit configured to receive output from the RF rectifier circuit and perform summation and amplification operations on the received output from the multiple signal paths M, wherein the amplifier circuit is a trans-impedance amplifier circuit;
- an analog-to-digital (ADC) circuit configured to receive an output of the amplifier circuit, and to convert the received output to a digital baseband format;
- and
- a baseband physical layer configured to receive signals from the ADC and to output a fast wakeup signal and a secure wakeup signal, wherein a wireless network in which the circuit resides is configurable for either fast wakeup signals of only a Sync Word or secure wakeup signals with a full wakeup receiver beacon packet with cryptographic checksum that includes a payload for data transfer without the need for a high-power receiver.
2 more elements
A method for radio frequency (RF) signal to baseband conversion, comprising:
- an RF rectifier circuit receiving an RF signal, wherein the RF rectifier processes the received RF signal as multiple signal paths M;
- an amplifier circuit receiving output from the RF rectifier circuit and perform summation and amplification operations on the received output from the multiple signal paths M, wherein the amplifier circuit is a trans-impedance amplifier circuit;
- an analog-to-digital (ADC) circuit receiving an output of the amplifier circuit, and to convert the received output to a digital baseband format;
- and
- a baseband physical layer configured receiving signals from the ADC and to output a fast wakeup signal and a secure wakeup signal, wherein a wireless network in which the circuit resides is configurable for either fast wakeup signals of only a Sync Word or secure wakeup signals with a full wakeup receiver beacon packet with cryptographic checksum that includes a payload for data transfer without the need for a high-power receiver.
2 more elements
Dependencies are inferred from the claim text.