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Active electrically small transmitting antenna breaking through Bode-Fano limit

A technology of bode-fano and transmitting antenna, applied in the direction of antenna, resonant antenna, antenna components, etc., can solve the problems of inappropriate cascading method and increase the overall size of the system, achieve large gain-bandwidth product, increase effective gain, gain The effect of bandwidth product enhancement

Pending Publication Date: 2021-10-29
CHONGQING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the circuits and transmission lines in the cascaded configuration significantly increase the overall size of the system
Therefore, the cascade method is generally not suitable for realizing the overall electronic small design

Method used

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  • Active electrically small transmitting antenna breaking through Bode-Fano limit
  • Active electrically small transmitting antenna breaking through Bode-Fano limit
  • Active electrically small transmitting antenna breaking through Bode-Fano limit

Examples

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Embodiment Construction

[0059] The present invention will be further described below in conjunction with drawings and embodiments.

[0060] Such as Figure 1-Figure 4 The shown active small transmitting antenna that breaks through the Bode-Fano limit is characterized in that it includes a first metal floor 1, and electrically small near-field resonance parasitics that are arranged on the first metal floor 1 and are perpendicular to each other. An antenna unit 2, a negative feedback amplifying circuit unit 3, the electric small near-field resonant parasitic antenna unit 2 and the negative feedback amplifying circuit unit 3 are both perpendicular to the first metal floor 1;

[0061] An electrically small near-field resonant parasitic antenna unit 2 for transmitting and radiating signals is connected to the negative feedback amplifying circuit unit 3 .

[0062] As an embodiment of the present invention, the electrically small near-field resonant parasitic antenna unit 2 includes a first dielectric subs...

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PUM

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Abstract

The invention provides an active electrically small transmitting antenna breaking through the Bode-Fano limit, which comprises a first metal floor, and an electrically small near-field resonance parasitic antenna unit and a negative feedback amplification circuit unit which are arranged on the first metal floor and are perpendicular to each other, wherein the electrically small near-field resonance parasitic antenna unit and the negative feedback amplification circuit unit are both perpendicular to the first metal floor; and the electrically small near-field resonance parasitic antenna unit used for transmitting and radiating signals is connected with the negative feedback amplification circuit unit. According to the invention, the electrically small antenna is ingeniously embedded into an operational amplifier feedback circuit, so that the effective gain of the electrically small antenna can be remarkably increased, the passive Bode-Fano limit of the electrically small antenna is broken through, and no extra space is consumed.

Description

technical field [0001] The invention relates to an active electrically small transmitting antenna, in particular to an active electrically small transmitting antenna breaking through the Bode-Fano limit. Background technique [0002] Electrically small antennas are very useful in a variety of wireless applications associated with space-constrained platforms due to their small size relative to their operating wavelength. However, the performance of an antenna is inherently limited in relation to its electrical size, such as impedance bandwidth and achievable gain, namely the Bode-Fano limit. This greatly limits the application of electrically small antennas in space-constrained platform wireless communication systems that require high gain. [0003] In order to increase the gain of electrically small antennas, researchers have proposed some better methods, including: Yagi structure, introduction of covering structure, near-field resonant parasitic element and Huygens antenna...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q9/04H01Q1/00H01Q1/24H01Q23/00
CPCH01Q9/0407H01Q9/045H01Q1/002H01Q1/241H01Q23/00
Inventor 唐明春余亚清易达洪鼎谋理查德·齐奥尔科夫斯基
Owner CHONGQING UNIV
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