Helical antenna

Abstract

The invention relates to a helical antenna which comprises an antenna dielectric body, an antenna radiator covering the surface of the antenna dielectric body, and an antenna circuit board connected to the antenna dielectric body and the end of the antenna radiator, and the antenna dielectric body is of a hollow structure; the antenna radiator comprises a spiral arm and a branch knot protruding out of a spiral arm body, and the spiral arm and the branch knot surround the surface of the antenna medium body in a spiral shape; the spiral arms and the branches are made of conductive materials and used for receiving electric signals. According to the invention, the physical length of the radiating body used for receiving the electric signal is increased, so that the helical antenna can receive the signal with the original wavelength without increasing the physical size, and the height of the helical antenna is reduced. Moreover, the antenna dielectric body of the antenna is of a hollow structure, so that the filling amount of the base material is reduced, and the manufacturing cost is reduced; the antenna radiator with the spiral structure also has the advantages of wide wave beam and low elevation angle, and the antenna performance is improved.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a helical antenna. Background technique [0002] The antennas on the market generally include microstrip antennas, substrate-filled helical antennas, and soft-substrate helical antennas. Microstrip antennas have problems such as narrow beam width and high elevation angle, and the overall performance is poor. There are problems, but they have their own defects. The substrate-filled helical antenna needs to use the substrate to fill the dielectric body, which increases the production cost; although the soft substrate helical antenna does not need to use the substrate to fill the dielectric body, correspondingly, in order to achieve the required electrical length, it is necessary to increase the antenna The height dimension increases the size of the antenna, which in turn affects the miniaturization and portability of the satellite mobile terminal. [0003] Therefore, the antenn...

AI Technical Summary

Problems solved by technology

Microstrip antennas have problems such as narrow beam width and high elevation angle, and the overall performance is poor. Existing problems, but each has its own flaws

The substrate-filled helical antenna needs to use the substrate to fill the dielectric body, which increases the production cost; although the soft substrate helical antenna does not need to use the substrate to fill the dielectric body, correspondingly, in order to achieve the required electrical length, it is necessary to increase the antenna height dimension, which increases the size of the antenna, which in turn affects the miniaturization and portability of satellite mobile terminals

[0003] Therefore, the antennas on the market still have the problems of poor performance, high manufacturing cost, and high antenna height.

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