Balance double-frequency four-arm helical antenna

A four-arm helical and balanced technology, applied in helical antennas, antennas, resonant antennas, etc., can solve problems affecting antenna performance, current imbalance between the main radiation arm and the secondary radiation arm of the four-arm helical antenna, and reduce the size of the antenna , increase the electrical length, improve the performance of the effect

Pending Publication Date: 2019-03-22
HARXON CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] This application is designed to solve the current imbalance between the main radiating arm and the secondary radiating arm of the four-armed helical antenna in the prior art, which causes the energy of the parasitic frequency band to be lower than the energy of the main frequency band, which affects the performance of the antenna.

Method used

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  • Balance double-frequency four-arm helical antenna
  • Balance double-frequency four-arm helical antenna
  • Balance double-frequency four-arm helical antenna

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] like figure 1 , figure 2 As shown, the balanced dual-frequency four-arm helical antenna includes a radiating part, a feeding part, an outer cover 10, and a cable 11, wherein the radiating part includes four sets of helical arms 2, which are tightly wound on the hollow column 1, and the feeding part is installed by It is composed of a circularly polarized feeder assembly 9 below the hollow column, and the outer cover 10 closely surrounds the radiation part and the feeder part for protection and aesthetics. Cables 11 emerge from the housing 10 .

[0029] The structural specifications of the four groups of spiral arms 2 are the same, and they are arranged at equal intervals. Each group of spiral arms includes the main radiation arm 3 and the auxiliary radiation arm 4, and there is a coupling component 5 between the main radiation arm and the auxiliary radiation arm so that the two arms The current balance between them, while increasing the effective electrical length of...

Embodiment 2

[0043] like image 3 As shown, this embodiment provides two specific arrangements of the coupling assembly 5 .

[0044] The setting of the main radiation arm 3 and the auxiliary radiation arm 4 is that one terminal of the coupling assembly 5 is an open circuit, the terminals of the main radiation arm 3 and the auxiliary radiation arm 4 are open circuits, and the optional coupling assembly 6 includes the main radiation arm 3 and the auxiliary radiation arm. Two coupling pieces with flush ends on the secondary radiating arm 4, the coupling pieces are metal pieces.

Embodiment 3

[0046] like Figure 4 As shown, this embodiment provides a third specific arrangement form of the coupling assembly 5 . The terminals of the main radiation arm 3 and the auxiliary radiation arm 4 are open circuits. The optional coupling component 7 includes two zigzag-shaped coupling pieces arranged on the main radiating arm 3 and the auxiliary radiating arm 4 respectively, and the coupling pieces are metal pieces.

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Abstract

The invention relates to the technical field of antennas, and provides a balance double-frequency four-arm helical antenna, belonging to the technical field of a multi-mode global satellite navigationsystem antenna. The balance double-frequency four-arm helical antenna includes a radiation portion and a feeding portion, wherein the radiation portion includes an open tubular column and four sets of helical arms with the same specification and the equal interval; the helical arms are wound around the surface of the open tubular column; the feeding portion is arranged at the end portion of the open tubular column; each set of helical arms include a main radiation arm and an auxiliary radiation arm; one end of the main radiation arm and one end of the auxiliary radiation arm is open circuit or short circuit; and a coupling component is arranged at one end which is open circuit or short circuit. The balance double-frequency four-arm helical antenna can improve the energy of a parasitic frequency range, can improve the performance of the parasitic frequency range, and can reduce the size of the antenna at the same time.

Description

technical field [0001] The application relates to a balanced dual-frequency four-arm helical antenna, which belongs to the technical field of multi-mode global satellite navigation system antennas. Background technique [0002] Global Navigation Satellite System (GNSS) has a wide range of applications in all aspects of society. Compared with a single satellite navigation system, multi-mode navigation has the advantages of wider coverage, higher navigation accuracy, and more stable operation, which makes multi-mode navigation a major trend in the development of satellite navigation in the future. The antenna is an important part of the satellite navigation system, and its performance has a great influence on the performance of the navigation system. Therefore, it is of great significance to study the multi-mode satellite navigation antenna. [0003] Conventional quadrifilar helical antennas generally achieve dual-frequency characteristics by bending the radiation arm at the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/36H01Q1/50H01Q23/00
CPCH01Q1/36H01Q1/50H01Q23/00H01Q11/08H01Q5/371H01Q1/362H01Q1/48H01Q9/27
Inventor 吴文平王杰
Owner HARXON CORP
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