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A micro antenna device

A device and antenna technology, applied in the field of ultra-small antennas, can solve problems such as the origin of which is not discussed

Inactive Publication Date: 2011-02-09
D 辛哈
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The prior art does not discuss the origin of these waves in the far-field region, usually in transmit or receive mode

Method used

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Embodiment Construction

[0071] The present invention relates to ultra-small antennas using piezoelectric materials. Piezoelectric material in thin film or bulk form provides a medium in which the wavelength of an applied radio signal is shortened as it propagates through the medium. The time-varying wired electrical excitation accelerates the charges within the material, which eventually leads to electromagnetic radiation from the material. When an electromagnetic wave propagating through free space hits a piezoelectric material, charges within the material are accelerated, creating a flow of current in the material and generating a voltage, and it acts as a receiving antenna. The high quality factor associated with the resonance modes of piezoelectric crystals means that they can replace normal antennas as transmitters and receivers of electromagnetic waves for telecommunications and related applications. The high quality factor associated with vibrations of microstructures leads to selective filte...

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Abstract

The present invention is on an ultra small antenna made of a piezoelectric material. The wavelength of radio signals propagating through the piezoelectric material is shortened because of its high dielectric constant and a resonance between the radio signal and the modes of its mechanical waves at various frequencies results in high amplitude signals in the transmission and reception mode.

Description

technical field [0001] The present invention relates to devices using piezoelectric materials primarily for wireless telecommunications applications, in particular, but not exclusively, to ultra-small antennas using piezoelectric materials operating at frequencies greater than 20 kHz. Background technique [0002] Antennas are devices that convert time-varying currents into electromagnetic waves and vice versa. They are a fundamental aspect of communication systems and they connect to the transceiver circuits of a wireless communication link. Antennas have not changed much in size or volume over the past few hundred years. Various forms of metallic structures emit or receive radio waves at electrical resonance. [0003] One of the main problems associated with antennas is that their size must be comparable to the wavelength of the electromagnetic waves they emit or receive. The wavelength of electromagnetic waves used in communication systems varies from less than a meter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H03H9/00H01Q1/42H01Q1/24H10N30/50
CPCH01Q21/00H01Q1/422H01Q1/24H01Q1/38H03H9/17
Inventor D·辛哈
Owner D 辛哈
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