IP Library › Granted Patent US 12,283,827
Granted Patent B2
US 12,283,827 · App. 18/093,291 · Granted Apr 22, 2025

RF receiver

Inventors: Seyed Ali Hajimiri (La Canada, CA); Florian Bohn (Pasadena, CA); Behrooz Abiri (Pasadena, CA)
Assignee: California Institute of Technology
H02J50/23H04B1/1607H02J50/40H02J50/402
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Quick Facts
Patent No.
US 12,283,827
App. No.
18/093,291
Filed
Jan 4, 2023
Granted
Apr 22, 2025
Kind
B2
Examiner
ORTIZ, ELIM
Art Unit
2836
USPC
455/343.1
Abstract

A device includes, in part, an antenna adapted to receive an RF signal that includes modulated data, a splitter/coupler adapted to split the received RF signal, a receiver adapted to demodulate the data from a first portion of the RF signal, and a power recovery unit adapted to convert to a DC power a second portion of the RF signal. The splitter/coupler is optionally adjustable to split the RF signal in accordance with a value that may be representative of a number of factors, such as the target data rate, the DC power requirement of the device, and the like. The device optionally includes a switch and/or a power combiner adapted to deliver all the received RF power to the receiver depending on any number of operation conditions of the device or the device's distance from an RF transmitting device.

Claims (13)

1. A device comprising:

an antenna adapted to receive an RF signal comprising modulated data;

a demodulator adapted to demodulate the data from a first portion of the RF signal;

a power recovery unit adapted to convert a second portion of the RF signal to a DC power to power the device; and

a controller adapted to receive the RF signal from the antenna and generate the first and second portions of the RF signal in accordance with a ratio of impedance values of the demodulator and the power recovery unit at the output of the controller.

2. The device of claim 1 wherein said device is a mobile device.

3. The device of claim 1 further comprising a voltage regulator configured to regulate the DC power.

4. The device of claim 1 wherein the controller is adapted to vary the impedance value of the receiver.

5. The device of claim 4 wherein the controller is adapted to vary the impedance value of the power recovery unit.

6. The device of claim 5 wherein said controller is further adapted to:

set the first portion to be greater than said second portion upon determining that an impedance value at an input of the controller is closer to the impedance value of the receiver than to the impedance value of the power recovery unit.

7. The device of claim 6 wherein said controller is further adapted to:

set the second portion to be greater than said first portion upon determining that the impedance value at the input of the controller is closer to the impedance value of the power recovery unit than to the impedance value of the receiver.

Continuity (5)
Division 15273633 · Sep 22, 2016
Continuation In Part 14078489 · Nov 12, 2013
Provisional Application 62222106 · Sep 22, 2015
Provisional Application 61724638 · Nov 9, 2012
Related Publication 20230142689A1 · May 11, 2023
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