Radio Frequency Duplexer
AssigneeHuawei Technologies Co., Ltd.
InventorUdo Karthaus
Life of this patent
Estimating the term…
Abstract
A radio frequency duplexer with a first directional coupler configured to divide an input reception signal into a first auxiliary reception signal and a second auxiliary reception signal, where the first auxiliary reception signal and the second auxiliary reception signal comprise signal components at a reception frequency, a first filter configured to filter the first auxiliary reception signal to obtain a third auxiliary reception signal, a second filter configured to filter the second auxiliary reception signal to obtain a fourth auxiliary reception signal, where pass bands of the first and the second filters comprise the reception frequency, a second directional coupler configured to combine the third auxiliary reception signal with the fourth auxiliary reception signal to obtain an output reception signal.
Claims20
A radio frequency duplexer, comprising:
- a first directional coupler configured to divide an input reception signal into a first auxiliary reception signal and a second auxiliary reception signal, wherein the first auxiliary reception signal and the second auxiliary reception signal comprise signal components at a reception frequency;
- a first filter coupled to the first directional coupler, wherein the first filter is configured to filter the first auxiliary reception signal to obtain a third auxiliary reception signal, and wherein a pass band of the first filter comprises the reception frequency;
- a second filter coupled to the first directional coupler, wherein the second filter is configured to filter the second auxiliary reception signal to obtain a fourth auxiliary reception signal, and wherein a pass band of the second filter comprises the reception frequency;
- and
- a second directional coupler configured to combine the third auxiliary reception signal with the fourth auxiliary reception signal to obtain an output reception signal.
A radio frequency frontend, comprising:
- a radio frequency duplexer comprising:
- a first directional coupler;
- a first filter coupled to the first directional coupler;
- a second filter coupled to the first directional coupler;
- and
- a second directional coupler coupled to the first filter and coupled to the second filter, wherein the radio frequency duplexer is configured to handle an input reception signal and to provide an output reception signal;
- and
- a low-noise amplifier configured to amplify the output reception signal.
A method for handling a signal, comprising:
- dividing an input reception signal into a first auxiliary reception signal and a second auxiliary reception signal, wherein the first auxiliary reception signal and the second auxiliary reception signal comprise signal components at a reception frequency;
- filtering the first auxiliary reception signal to obtain a third auxiliary reception signal, wherein a pass band of the first filter comprises the reception frequency;
- filtering the second auxiliary reception signal to obtain a fourth auxiliary reception signal, and wherein a pass band of the second filter comprises the reception frequency;
- and
- combining the third auxiliary reception signal with the fourth auxiliary reception signal to obtain an output reception signal.
Dependencies are inferred from the claim text.