Method and circuit for improving Bluetooth communication distance

A Bluetooth communication and distance technology, applied in the direction of electrical components, transmission systems, near-field transmission systems, etc., can solve the problems of large Bluetooth receiving area, high power consumption, inability to achieve small area and low power efficiency, and reduce the communication rate , Amplify the signal amplitude and reduce the effect of receiving bandwidth

Inactive Publication Date: 2018-04-27
NATIONZ TECH INC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: due to the relatively large receiving area required for the current long-distance transmission of Bluetooth and the relatively high power consumption, it is impossible to achieve small-area and low-efficiency transmission

Method used

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  • Method and circuit for improving Bluetooth communication distance
  • Method and circuit for improving Bluetooth communication distance
  • Method and circuit for improving Bluetooth communication distance

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Experimental program
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Embodiment

[0041] When the antenna receives the radio frequency signal, adjust the parameters of the low-sound amplifier at this time through the low-sound amplifier, so that the amplitude and frequency of the signal are amplified, and the amplified signal is mixed with the signal sent by the local oscillator buffer through the mixer , adjust the difference between the amplified signal and the signal sent by the local oscillator buffer, the difference can be reduced to 1MHz, the signal obtained after mixing, enters the complex filter and programmable amplifier, filters out the image frequency and further Amplify the signal amplitude; compared with the bandwidth of the complex filter in the traditional solution is 500kHz-750kHz, the filter bandwidth at this time can be reduced to 250kHz, reducing the in-band noise of the signal and reducing the noise of the entire link; through the filtered The signal enters the analog-to-digital converter and is quantized. Compared with the traditional so...

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Abstract

The invention relates to a method and a circuit for improving a Bluetooth communication distance. The method comprises the following steps of S1.receiving a radio frequency signal by a Bluetooth antenna receiver, S2.carrying out frequency mixing, amplification and quantization processing on the radio frequency signal; S3.demodulating the processed signal. The circuit comprises a signal receiving circuit, a signal processing circuit and a signal conditioning circuit which are connected in series in sequence; the signal processing circuit comprises at least two frequency mixers, a local oscillator buffer, a plurality of filters, a programmable amplifier and at least two analog-to-digital converters; the local oscillator buffer is connected to each frequency mixer, and after the frequency mixers are connected to each other, the frequency mixers are connected to the filters and the programmable amplifier; and the filters and the programmable amplifier are connected to the at least two analog-to-digital converters in series. According to the method and the circuit, the useful signal bandwidth is reduced, so that the device noise of a receiver link is reduced, the sensitivity of the receiver is improved, the link budget is increased, and a transmission distance is expanded.

Description

technical field [0001] The invention relates to the technical field of bluetooth communication, in particular to a method for improving the bluetooth communication distance and a circuit thereof. Background technique [0002] Due to the advantages of low power consumption and high integration, Bluetooth communication technology has been greatly expanded in communication fields such as IoT. [0003] Although the Bluetooth communication in the prior art can also transmit data at a higher power to achieve a larger communication distance, but at the Bluetooth user end, high-power transmission consumes more power, and the Bluetooth user end electronic machine in order to be able to It is convenient to be carried freely, and generally uses batteries and other power storage devices as the power source. The high power consumption caused by high-power transmission will greatly reduce the battery life of Bluetooth-using electronic machines, and make the Bluetooth-using electronic mach...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B5/00H04B1/10H04B1/16
CPCH04B1/10H04B1/16H04B5/0025
Inventor 赵辉张存才
Owner NATIONZ TECH INC
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