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Module and method for improving Bluetooth link budget and solving multipath effect

A link budget and multi-path effect technology, applied in transmission systems, energy consumption reduction, advanced technology, etc., can solve the problems of reducing the communication coverage and reducing the communication distance, so as to improve the communication stability, improve the communication distance, and solve the The effect of performance degradation

Active Publication Date: 2021-11-26
ZHEJIANG LIERDA INTERNET OF THINGS TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The present invention aims to solve the problem of reduced communication coverage under 2Mbps by increasing the link budget while satisfying the Bluetooth 5.0 core specification in the prior art, and provides a module and a module for improving the Bluetooth link budget and solving the multipath effect. The algorithm, according to theoretical calculations, will reduce the communication distance by 1.5 times, meet the Bluetooth 5.0 core specification and be compatible with the 4.2 core specification

Method used

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  • Module and method for improving Bluetooth link budget and solving multipath effect
  • Module and method for improving Bluetooth link budget and solving multipath effect
  • Module and method for improving Bluetooth link budget and solving multipath effect

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Embodiment

[0048] This embodiment provides a module for improving the Bluetooth link budget and solving multipath effects, such as Figure 4 As shown, it includes power supply module 1, crystal oscillator module 2, nRF52833 Bluetooth module 3, pre-stage filter circuit 4, DC blocking circuit 5, FEM circuit 6, first post-stage filter circuit 7, first antenna port 8, The second post-stage filter circuit 9, the second antenna interface 10, the external interface 11, the pre-stage signal switching unit 12 and the post-stage signal switching unit 13, the power module is connected with the nRF52833 Bluetooth module, and the nRF52833 Bluetooth module is also connected with the crystal oscillator module and the external interface It is connected with the pre-stage filter circuit, the pre-stage filter circuit is connected with the DC blocking circuit, the DC blocking circuit is connected with the FEM circuit through the pre-stage signal switching unit, and the FEM circuit is also connected with the...

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Abstract

The invention discloses a module and method for improving a Bluetooth link budget and solving a multipath effect, and solves the problems that the limited power 20dBm in a Bluetooth 5.0 core specification cannot be satisfied due to insufficient chip capability and excessively low power in the prior art, and the communication distance is greatly shortened. The module comprises a power module for supplying power, a crystal oscillator module, an nRF52833 Bluetooth module, a pre-stage filter circuit, a blocking circuit, an FEM circuit, a first post-stage filter circuit, a first antenna port, a second post-stage filter circuit, a second antenna interface and an external interface. According to the invention, the characteristics of the 5.0 core specification are realized by using the Bluetooth chip nRF52833, and the optimal characteristics of the 5.0 specification are developed by using the FEM, so that the problems caused by single rate, low radio frequency power and multipath effect and the defects in the application range of the traditional scheme are solved.

Description

technical field [0001] The invention relates to the technical field of bluetooth, in particular to a module and a method for improving bluetooth link budget and solving multipath effect. Background technique [0002] With the release of the Bluetooth 5.0 core specification, in the new version of the Bluetooth core specification, the technical features of Bluetooth low energy are more abundant. Compared with the previous generation 4.2 core specification, it is compatible with its original features and adds a number of functions. For example, in terms of radio frequency performance, the output power is extended to 20dBm, the communication rate in LE mode is increased to a high rate of 2Mbps, and functions such as Long Range (long distance) mode are added in LE mode through encoding. [0003] In terms of output power, combined with the technical specifications of the previous generation Bluetooth 4.2 core specification, the output power is only allowed to be up to 10dBm. Howe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/0404H04B1/401H04B17/10H04B17/20
CPCH04B7/0404H04B1/401H04B17/101H04B17/20Y02D30/70
Inventor 孙香涛何佳王洪阳杨彬沈帅帅
Owner ZHEJIANG LIERDA INTERNET OF THINGS TECH
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