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Radio Frequency Duplexer

A radio frequency duplexer and radio frequency front-end technology, applied in radio frequency amplifiers, high frequency amplifiers, amplifiers, etc., can solve the problem of reducing the number of applicable frequency bands

Inactive Publication Date: 2018-03-27
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In US2013083703A1, RF duplexers are described using simple filters, where the transmit frequency can be higher than the receive frequency, resulting in a reduced number of applicable frequency bands

Method used

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  • Radio Frequency Duplexer
  • Radio Frequency Duplexer
  • Radio Frequency Duplexer

Examples

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Embodiment Construction

[0055] figure 1 Shown is a diagram of a radio frequency duplexer 100 for processing an incoming receive signal according to an embodiment. The radio frequency duplexer 100 includes: a first directional coupler 101 for dividing an input received signal into a first auxiliary received signal and a second auxiliary received signal, wherein the first auxiliary received signal and the second auxiliary received signal include frequency signal components; the first filter 103 is used to filter the first auxiliary received signal to obtain the third auxiliary received signal, wherein the passband of the first filter includes the received frequency; the second filter 105 is used to filter the The second auxiliary received signal is filtered to obtain a fourth auxiliary received signal, wherein the passband of the second filter includes the received frequency; and the second directional coupler 107 is used to combine the third auxiliary received signal and the fourth auxiliary received ...

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PUM

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Abstract

The present invention relates to a radio frequency duplexer (100). The radio frequency duplexer (100) comprises: a first directional coupler (101) configured to divide an input reception signal into afirst 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 (103) configured to filter the first auxiliary reception signal to obtain a third auxiliary reception signal; a second filter (105) configured to filter the second auxiliary reception signal to obtain a fourth auxiliary reception signal, wherein pass bands of the first and the second filter (105) comprises the reception frequency; a second directional coupler (107) configured to combine the third auxiliary reception signal with the fourth auxiliary reception signal to obtain an output reception signal.

Description

technical field [0001] The present invention relates to the field of radio frequency duplexers, in particular to integrated radio frequency duplexers. Background technique [0002] A radio frequency duplexer is a main component in a radio frequency (radio frequency (RF) system such as a mobile communication system or a radar system, and is used in various applications. RF duplexers allow two-way duplex signal transmission over a transmission channel where the receiver can be isolated from the transmitter while sharing a common antenna. [0003] Conventional radio frequency duplexers are implemented using large resonators or filters, such as surface-acoustic-wave (SAW) or bulk-acoustic-wave (BAW) filters. These RF duplexers may not be integrated on a single semiconductor substrate and may not be tuned to cover different frequency bands. [0004] Other conventional RF duplexers are based on RF transformers, where filtering is usually not applied. Transformer-based RF duplex...

Claims

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Application Information

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IPC IPC(8): H03H7/46
CPCH03H7/463H01P5/184H03F3/19H03F3/21H03F2200/255H03F2200/294H03F2200/451H03H7/0153H03H2210/025H04B1/52
Inventor 乌多·卡索斯
Owner HUAWEI TECH CO LTD