US 2026/0204953 A1Published application

Radio frequency rectifier device

AssigneeRealtek Semiconductor Corp.

InventorRong-Fu Yeh

Life of this patent

Estimating the term…

Loading patent…

Abstract

The disclosure provides a radio frequency rectifier device, including a first input node, a first capacitor, a second input node, a second capacitor, a first transistor element, a second transistor element, a third capacitor, a fourth capacitor, a third transistor element, a fourth transistor element, a fifth capacitor, a sixth capacitor, a first conductive element, a second conductive element, a third conductive element, a fourth conductive element, a load resistor and a load capacitor. When the first conduction element, the second conduction element, the third conduction element and the fourth conduction element are turned on, a gate voltage of the first transistor element, a gate voltage of the second transistor element, a gate voltage of the third transistor element and a gate voltage of the fourth transistor element are reduced respectively. These operations reduce a leakage current and a discharge interval of the transistor element, thereby improving power conversion efficiency.

Claims20

Dependent claims

A radio frequency rectifier device, comprising:

a first input node;
a first capacitor, connected to the first input node and a first node;
a second input node;
a second capacitor, connected to the second input node and a second node;
a first transistor element, connected between the first node and a ground terminal;
a second transistor element, connected between the second node and the ground terminal;
a third capacitor, connected to the first node and the second transistor element;
a fourth capacitor, connected to the second node and the first transistor element;
a third transistor element, connected between the first node and an output node;
a fourth transistor element, connected between the second node and the output node;
a fifth capacitor, connected to the first node and the fourth transistor element;
a sixth capacitor, connected to the second node and the third transistor element;
a first conductive element, connected to the first transistor element and the ground terminal, wherein when the first conductive element is turned on, a voltage of a first gate of the first transistor element is reduced;
a second conductive element, connected to the second transistor element and the ground terminal, wherein when the second conductive element is turned on, a voltage of a second gate of the second transistor element is reduced;
a third conductive element, connected to the third transistor element and the output node, wherein when the third conductive element is turned on, a voltage of a third gate of the third transistor element is increased;
a fourth conductive element, connected to the fourth transistor element and the output node, wherein when the fourth conductive element is turned on, a voltage of a fourth gate of the fourth transistor element is increased;
a load resistor, one end of the load resistor is connected to the output node;
and
a load capacitor, one end of the load capacitor is connected to the output node.

16 more elements

A radio frequency rectifier device, comprising:

a first input node;
a second input node;
a plurality of radio frequency rectifier units, connected between the first input node and the second input node and connected in series in sequence, wherein each radio frequency rectifier unit comprises:
a first capacitor, connected to the first input node and a first node;
a second capacitor, connected to the second input node and a second node;
a first transistor element, connected between the first node and a ground terminal;
a second transistor element, connected between the second node and the ground terminal;
a third capacitor, connected to the first node and the second transistor element;
a fourth capacitor, connected to the second node and the first transistor element;
a third transistor element, connected between the first node and an output node;
a fourth transistor element, connected between the second node and the output node;
a fifth capacitor, connected to the first node and the fourth transistor element;
a sixth capacitor, connected to the second node and the third transistor element;
a first conductive element, connected to the first transistor element and the ground terminal, wherein when the first conductive element is turned on, a voltage of a first gate of the first transistor element is reduced;
a second conductive element, connected to the second transistor element and the ground terminal, wherein when the second conductive element is turned on, a voltage of a second gate of the second transistor element is reduced;
a third conductive element, connected to the third transistor element and the output node, wherein when the third conductive element is turned on, a voltage of a third gate of the third transistor element is increased;
and
a fourth conductive element, connected to the fourth transistor element and the output node, wherein when the fourth conductive element is turned on, a voltage of a fourth gate of the fourth transistor element is increased;
a load resistor, one end of the load resistor is connected to the output node of the radio frequency rectifier unit at a tail end;
and
a load capacitor, one end of the load capacitor is connected to the output node of the radio frequency rectifier unit at the tail end.

18 more elements

Dependencies are inferred from the claim text.

Facts

Application: 19/368,361Filed 24 Oct 2025
Priority: TW 11410121510 Jan 2025
Published: 16 Jul 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

H02J 50/27
Using microwaves or radio frequency waves: characterised by the type of receiving antennas, e.g. rectennas
H02M 7/219
Using semiconductor devices only: in a bridge configuration
H02J 50/001
Circuit arrangements or systems for wireless supply or distribution of electric power: energy harvesting or scavenging
H02J 50/20
Circuit arrangements or systems for wireless supply or distribution of electric power: using microwaves or radio frequency waves