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Helical antenna

A helical antenna and helical technology, which is applied in the field of satellite communication, can solve the problems of incompatibility between low-frequency band efficiency and high-frequency band efficiency, and low efficiency of helical antennas, so as to improve antenna efficiency, reduce transmission loss, and reduce calorific value. Effect

Inactive Publication Date: 2017-03-22
深圳高新兴物联科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to propose a helical antenna, which aims to solve the problems of low efficiency of the existing helical antenna, incompatibility of low-frequency band efficiency and high-frequency band efficiency, etc.

Method used

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Embodiment 1

[0034] Figure 3-Figure 5 It is a schematic diagram of the first embodiment of the present invention. In this embodiment, the helical antenna includes a hollow dielectric column 1 , a radiator 2 , and a feed assembly 3 .

[0035] The hollow medium column 1 is a columnar structure with an open lower end and a closed upper end. Specifically, the columnar structure can be made of ABS material, and is composed of a hollow cylinder (not shown in the figure) and a hollow semicircular sphere (not shown in the figure) smoothly transitioned to its top, forming a structure with an open lower end and a closed upper end. The height of the hollow medium column 1 is 99mm; the outer diameter of the hollow cylinder is 13mm, and the wall thickness is 1.5-2.5mm. In other embodiments, the columnar structure can be composed of a hollow cuboid and other shapes connected with its top end through a smooth transition. That is, the composition of the hollow dielectric column 1 is not limited by the...

Embodiment 2

[0053] Please refer to Figure 6-Figure 7 . The difference between the second embodiment and the first embodiment is that the long helical arms ( 211 , 221 , 231 , 241 ) of the four sets of helical arms are helically wound to the upper end of the hollow dielectric column 1 for short-circuit connection. Specifically, they may be connected together through an additionally provided spiral arm 25 .

[0054] It should be noted that the upper end of the hollow medium column 1: if the hollow medium column 1 includes a hollow cylinder or a hollow semicircular sphere, the upper end of the hollow medium column 1 is the top end of the hollow cylinder.

Embodiment 3

[0056] Please refer to Figure 8 . The difference between the third embodiment and the first embodiment is that the long helical arms (211, 221, 231, 241) of the four sets of helical arms are helically wound to the top of the hollow medium column and connected by short circuit. Specifically, the long spiral arms ( 211 , 221 , 231 , 241 ) are connected together at the apex of the top end of the hollow medium column 1 , roughly in the shape of a "ten" on the surface of the hollow semicircular sphere. The extended length of the long helical arms (211, 221, 231, 241) is 15 mm, respectively.

[0057] It should be noted that the upper end of the hollow medium column 1: if the hollow medium column 1 includes a hollow cylinder and a hollow semicircular sphere, the upper end of the hollow medium column 1 is at the outer surface of the hollow semicircular sphere.

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Abstract

The invention discloses a helical antenna, and the antenna comprises a hollow dielectric column, a radiator, and a feed assembly. The hollow dielectric column is of a column-shaped structure with the opened lower end and the closed upper end. The radiator comprises four groups of helical arms, wherein each group of helical arms comprises three helical arms, and the lower ends of the three helical arms are connected together and are connected with a group of feed ports. The four groups of helical arms are arranged in parallel at equal intervals. The four groups of helical arms are wound from the lower end of the hollow dielectric column to the upper end of the hollow dielectric column, and are disposed on the external surface of the hollow dielectric column. The feed assembly is disposed in the lower end of the hollow dielectric column. The feed assembly comprises one input port, a polarized power dividing device, and four output ports. The four output ports are correspondingly connected with the feed ports of the four groups of helical arms in a one-one manner. The input port receives an antenna signal. The helical antenna provided by the invention can improve the antenna efficiency, is lower in transmission loss of a satellite terminal, reduces the heating quantity during operation, and prolongs the communication time.

Description

technical field [0001] The invention relates to the field of satellite communication, in particular to a helical antenna for satellite communication. Background technique [0002] Antenna is an important radio device for transmitting and receiving electromagnetic waves. With the rapid development of mobile satellite communication technology, the market demand for high-performance antenna products is also increasing, especially for hand-held terminal devices with small size, easy portability, high sensitivity and high stability. [0003] In mobile satellite communication earth stations and satellite navigation equipment, the antenna is usually required to have wide beam and circular polarization characteristics, so as to keep the satellite within the coverage of the antenna beam during motion. At the same time, the antenna must have wide-band or dual-frequency operating characteristics, so that receiving and sending can share an antenna. The quadrifilar helical antenna has ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/36H01Q1/50H01Q11/08
CPCH01Q11/08H01Q1/36H01Q1/50
Inventor 赵小林
Owner 深圳高新兴物联科技有限公司
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