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Transceiver capable of simultaneously transmitting two paths of voice signals

A voice signal, transceiver technology, applied in transmission systems, electrical components, etc., can solve problems such as unstable work and complex circuits, and achieve the effects of saving frequency band resources, enhancing error correction capabilities, and correcting frequency offsets

Active Publication Date: 2020-01-10
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional FM transceivers, such as FM radios, can only transmit one voice signal, and have disadvantages such as complex circuits, unstable operation, and volume

Method used

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  • Transceiver capable of simultaneously transmitting two paths of voice signals
  • Transceiver capable of simultaneously transmitting two paths of voice signals
  • Transceiver capable of simultaneously transmitting two paths of voice signals

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Embodiment Construction

[0019] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0020] figure 1 Shown in is the circuit block diagram of the transmitter part of the present invention. The microphone ① generates a voice signal with a frequency of 300Hz-3.4KHz and transmits it to the signal intelligent control module ① for digital up-conversion to realize the up-conversion of the voice signal to 7KHz to generate a signal with a frequency of 7.3KHz-10.4KHz. The signal intelligently controls Module ① can choose the development board integrated with FPGA chip. The microphone ② generates another voice signal of 300Hz~3.4KHz, which is transmitted together with the up-converted signal generated by the signal intelligent control module ① to the dual-channel mixing module to generate a signal with an amplitude and a peak value of 3V. The mixing module can choose a two-way audio mixing mixing board. The mixed signal is collected by...

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PUM

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Abstract

The invention discloses a transceiver capable of simultaneously transmitting two paths of voice signals. The analog sending end performs digital up-conversion on a voice signal output by a microphonethrough a signal intelligent control module; the output of the mixed sound is transmitted to the signal intelligent control module for A / D acquisition and controls the output of the DDS program control signal source module, and the output analog signal is sent out by the medium power amplifier connected with the antenna. The analog receiving end receives signals through an antenna and adjusts carrier frequency through a filtering and analog signal frequency multiplication module. The voice signals are amplified by the amplifying circuit module and transmitted to the phase-locked loop module tobe demodulated, the output is respectively connected with the two filters, the filtered voice signals with low center frequency directly produce sound through the loudspeaker, and the other signal istransmitted to the signal intelligent control module to perform digital down-conversion and then drive the loudspeaker to produce sound.

Description

technical field [0001] The present invention relates to a communication circuit (or a high-frequency circuit), more specifically, it relates to a two-way voice signal simultaneous interpretation transceiver. Background technique [0002] As a communication technology, radio communication technology has developed quite maturely since the end of the 19th century. As the product of this technology, FM transceiver equipment is widely used in civilian and military fields. Although the popularity of the Internet, mobile phones, televisions and other equipment has crowded out the market for FM transceivers such as FM radios and walkie-talkies, there is still much room for development in the fields of aviation communications and natural disasters. [0003] Traditional FM transceivers, such as FM radios, can only transmit one voice signal, and have disadvantages such as complex circuits, unstable operation, and volume. Due to the limited FM frequency band, using a single frequency ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/40H04B1/50
CPCH04B1/40H04B1/50
Inventor 刘杰吴强马婧妍禤祖年刘光鑫马潘
Owner BEIJING UNIV OF TECH
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