Low-frequency voice communication system based on piezoelectric mechanical antenna

A voice communication and mechanical technology, applied in the field of low-frequency communication, to achieve the effects of simple system construction, miniaturization, and high information transmission efficiency

Pending Publication Date: 2022-05-13
北京邮电大学深圳研究院 +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a low-frequency voice communication system based on piezoelectric mechanical antenna to solve the miniaturization of low-frequency signal transmission system and the practical application of low-frequency signal transmission system

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  • Low-frequency voice communication system based on piezoelectric mechanical antenna
  • Low-frequency voice communication system based on piezoelectric mechanical antenna
  • Low-frequency voice communication system based on piezoelectric mechanical antenna

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Embodiment Construction

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, embodiments of the present invention. All other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] refer to figure 1 , The mechanical antenna is composed of a single-layer piezoelectric ceramic square piece, the size of the piezoelectric ceramic square piece is 20mm × 20mm × 2.3mm, and the commonly used PZT material is selected as the piezoelectric ceramic material. The feeding structure is arranged on the upper and lower surfaces of the ceramic square, and silver electrodes are coated f...

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Abstract

The invention provides a low-frequency voice communication system based on a piezoelectric mechanical antenna. The communication system comprises a function signal generator, a power amplifier, a feed support, a loop antenna, a lock-in amplifier and a computer. The computer controls the function signal generator to generate an electromagnetic wave signal needing to be transmitted, the power amplifier amplifies the power of a radio frequency signal output by the function signal generator, and excites the piezoelectric ceramic through the feed support to generate an inverse piezoelectric effect and radiate electromagnetic waves. The loop antenna receives an electromagnetic wave signal radiated by the piezoelectric ceramic, transmits the electromagnetic wave signal to the lock-in amplifier for signal filtering and amplification, and converts the signal into a voice signal of a transmitting end through the computer. The low-frequency voice communication system based on the piezoelectric mechanical antenna is simple in equipment installation, small in size and high in information transmission efficiency, and has very high application value in the aspects of underwater wireless communication, positioning, navigation and the like.

Description

technical field [0001] The invention relates to the technical field of low-frequency communication, in particular to a low-frequency voice communication system based on a piezoelectric mechanical antenna. Background technique [0002] At present, my country's 5G communication technology development is at the forefront of the world, and the number of 5G users accounts for more than 80% of the world. However, in the face of underground communication such as tunnels, mines, and special communication environments such as underwater communication, low-frequency electromagnetic waves are required as the carrier of signal transmission. Arrays are used to transmit and transmit electromagnetic waves, which results in problems such as excessive size, high cost and low flexibility of use of low-frequency electro-excited antennas. It cannot be applied to underground and underwater communication, so the low-frequency miniaturized signal transmission system has become a major research fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/03H04B1/08H01Q1/38G10L15/26G10L13/04
CPCH04B1/03H04B1/08H01Q1/38G10L15/26G10L13/04
Inventor 毕科杨靖兰楚文许建春
Owner 北京邮电大学深圳研究院
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