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Superwide band single polar antenna

A monopole antenna and ultra-wideband technology, applied in the direction of antenna, resonant antenna, slender active unit end feed, etc., can solve the problem of large size, and achieve small size, good manufacturing process, and high gain Effect

Active Publication Date: 2006-11-15
CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional ultra-wideband monopole antennas mainly include single conical antenna and dish cone antenna, etc. The bandwidth reaches 10.7:1, but its volume is large

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0022] Embodiment 1: 3GH~15GHz antenna

[0023] The ultra-wideband monopole antenna includes a monopole 1, a reflector 2 and a coaxial connector 3. The monopole 1 is connected with the coaxial connector 3 , and the reflection plate 2 is set between the monopole 1 and the coaxial connector 3 .

[0024] The monopole 1 is columnar, and the outer surface of the columnar monopole is evenly distributed with ring grooves, so that the outer periphery of its axial section forms a corrugated shape. The corrugations are rectangular corrugations, the middle part is a cylinder, and the upper end is a large bottom and a small top. Cone, the lower end is a cone with a large upper part and a smaller lower part, as shown in Figure 1.

[0025] The center frequency of the antenna is 9 GHz, and its wavelength is 33.33 mm. The axial length of the monopole is preferably between 0.5 and 1.5 wavelengths, that is, between 16.665 mm and 50 mm, and the diameter of the central cylinder is preferably bet...

Embodiment 2

[0026] Embodiment 2: 0.8-4GHz antenna

[0027] The outer periphery of the monopole axial section is corrugated, and the corrugations are wave-shaped corrugations.

[0028] The center frequency of the antenna is 2.4GHz, the wavelength is 125 mm, its total length can be between 62.5 mm and 187.5 mm, and the diameter of the middle cylinder can be between 12.5 mm and 50 mm, but the optimal design value is: the axial length is 96mm, which is 0.768 wavelength of the center frequency, the maximum diameter of the inner conductor is 20mm, which is 0.16 wavelength of the center frequency, see image 3 , Figure 5 .

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Abstract

This invention relates to super wide band monopole antenna. The problem be solved is to provide one simple structure and little volume super wide band monopole antenna. The feature is that the monopole is pillar type, ring slots are distributed on outer surface of the monopole to make axial cross section circumferential as rippled wall, the central part is column, up end is cone of up large and down small, down end is cone of up large and down small. The antenna surface is rippled wall, so its radiation impedance can better match free space wave impedance in larger frequency range. The matching to input impedance is realized by morphing of the antenna diameter, so wider band and higher gain can be got. Its weight is about 70 gram and volume is small, and its manufacturing technique is good.

Description

technical field [0001] The present invention relates to ultra-wideband monopole antennas. Background technique [0002] UWB antennas are more and more widely used in military and civilian fields. Especially after the U.S. Federal Communications Commission (FCC) approved the use of UWB (3.1-10.6GHz) for short-distance wireless communication, people put forward higher and higher requirements for ultra-wideband antennas, such as simple structure and small size. [0003] Traditional ultra-wideband monopole antennas mainly include single conical antenna and dish cone antenna, etc. The bandwidth reaches 10.7:1, but its volume is large. Contents of the invention [0004] The object of the present invention is to provide an ultra-wideband monopole antenna with simple structure and small volume. [0005] The specific structural design scheme is as follows: [0006] The ultra-wideband monopole antenna includes a monopole, a reflector and a coaxial connector. The monopole is conn...

Claims

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Application Information

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IPC IPC(8): H01Q9/30H01Q13/08H01Q19/10
Inventor 万笑梅
Owner CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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