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Circuit and method for improving radio frequency isolation and a mobile terminal

A radio frequency isolation and isolation technology, applied in the field of mobile terminals and circuits to improve radio frequency isolation, can solve the problems of increasing design difficulty and wasting space.

Active Publication Date: 2021-04-06
HUIZHOU TCL MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is a waste of space in view of the trend that the PCB area is becoming more and more precious, and with the addition of signal routing, the design is more difficult

Method used

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  • Circuit and method for improving radio frequency isolation and a mobile terminal
  • Circuit and method for improving radio frequency isolation and a mobile terminal
  • Circuit and method for improving radio frequency isolation and a mobile terminal

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Embodiment Construction

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0040] Embodiments of the present invention provide a circuit, a method and a mobile terminal for improving radio frequency isolation. The mobile terminal in the embodiment of the present invention may be a mobile phone, a tablet computer, a notebook computer and other devices. Each will be described in detail below. It should be noted that the description sequence of the following embodiments is not intended to limit the preferred sequence of the embodiments.

[0041] Embod...

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Abstract

The embodiment of the invention discloses a circuit and method for improving radio frequency isolation and a mobile terminal. The circuit comprises a switch module and at least two isolation control modules. Each isolation control module receives signals of multiple frequency bands and is used for outputting attenuated signals. And the switch module is connected with the isolation control module and is used for gating a radio frequency path according to the received frequency band, and the radio frequency path corresponds to the isolation control module corresponding to the received frequency band and outputs the signal meeting the preset isolation degree requirement. According to the scheme, the radio frequency isolation degree is improved, the space capable of being saved is realized according to required frequency band combinations, and the more the combinations are, the more the relatively saved space is.

Description

technical field [0001] The invention relates to a radio frequency circuit, in particular to a circuit, a method and a mobile terminal for improving radio frequency isolation. Background technique [0002] With the continuous development and popularization of the fifth-generation mobile communication system 5G technology, people have higher and higher requirements for the user experience of the terminal. But at the same time, we need to consider the compatibility of 2G\3G\4G existing networks, which undoubtedly poses a higher challenge to the design of our terminal equipment. The current terminal design needs to consider the EN-DC scenario of simultaneous use of 5G and 4G, and the scenario of carrier aggregation CA between different frequency bands of 4G. In these simultaneous working scenarios, it is necessary to consider the interference and mutual interference between the two. For example, if we do not have enough isolation in the power detection part, in the ENDC scenar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/00H04B1/401
CPCH04B1/005H04B1/401Y02D30/70
Inventor 朱颖蔡海
Owner HUIZHOU TCL MOBILE COMM CO LTD