US 2026/0100494 A1Published application

Coupler circuit and wireless communication device including same

AssigneeSamsung Electronics Co., Ltd.

InventorsKyunghwan Kim, GeonHo Park, Byeongtaek Moon, Hyunchul Park, Sangmin Yoo, Joonhoi Hur

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Abstract

Disclosed is a coupler circuit including a first transformer connected between a first input terminal and a first output terminal, a first inductor connected to a first node between the first input terminal and the first transformer, a first resistor connected to the first inductor, a first capacitor connected to the opposite ends of the first coil, a second capacitor connected to the opposite ends of the second coil, a second transformer connected between a second output terminal and a second node between the first inductor and the first resistor, the second transformer comprising a third foil and a fourth coil each comprising opposite ends, a third capacitor connected to the opposite ends of the third coil, a fourth capacitor connected to the opposite ends of the fourth coil, and a second inductor connected between the first output terminal and the second output terminal.

Claims20

Dependent claims

A coupler circuit comprising:

a first input terminal configured to receive an input signal having an input impedance;
a first output terminal configured to output a first output signal having a target impedance;
a first transformer connected between the first input terminal and the first output terminal, the first transformer comprising a first coil and a second coil, each of the first coil and the second coil comprising opposite ends;
a first node between the first input terminal and the first transformer;
a first inductor connected to the first node;
a first resistor connected to the first inductor;
a first capacitor connected in parallel to the opposite ends of the first coil of the first transformer;
a second capacitor connected in parallel to the opposite ends of the second coil of the first transformer;
a second output terminal configured to output a second output signal having the target impedance;
a second node between the first inductor and the first resistor;
a second transformer connected between the second output terminal and the second node, the second transformer comprising a third coil and a fourth coil, each of the third coil and the fourth coil comprising opposite ends;
a third capacitor connected in parallel to the opposite ends of the third coil of the second transformer;
a fourth capacitor connected in parallel to the opposite ends of the fourth coil of the second transformer;
and
a second inductor connected between the first output terminal and the second output terminal.

12 more elements

A wireless communication device comprising:

an antenna configured to transmit and receive an RF signal having a predetermined frequency;
a radio frequency front end (RFFE) including a coupler circuit connected to the antenna, the coupler circuit including at least two or more transformers;
and
a radio frequency integrated circuit (RFIC) connected to the RFFE and configured to control a frequency of the RF signal,
wherein the coupler circuit is configured to receive a first input signal, having an input impedance, from the RFIC and output a first output signal and a second output signal, each having a target impedance and being orthogonal to each other, from the first input signal.

2 more elements

A coupler circuit comprising:

a first input terminal configured to receive an input signal having an input impedance;
a first output terminal configured to output a first output signal having a target impedance;
a first reference node, wherein the input signal is defined with respect to the first reference node;
a second reference node, wherein the first output signal is defined with respect to the second reference node;
a first transformer connected between the first input terminal and the first output terminal, the first transformer comprising a first coil connected between the first input terminal and the first reference node and a second coil inductively coupled to the first coil and connected between the first output terminal and the second reference node;
a first node between the first input terminal and the first coil of the first transformer;
a first inductor connected to the first node;
a first resistor connected to the first inductor;
a second output terminal configured to output a second output signal having the target impedance;
a second node between the first inductor and the first resistor;
a third reference node;
a fourth reference node, wherein the second output signal is defined with respect to the third reference node;
a second transformer connected between the second output terminal and the second node, the second transformer comprising a third coil connected between the second node and the third reference node and a fourth coil connected between the second output terminal and the fourth reference node;
and
a second inductor connected between the first output terminal and the second output terminal.

12 more elements

Dependencies are inferred from the claim text.