Low profile circularly polarized conical wave beam antenna

Abstract

The invention provides a low profile circularly polarized conical wave beam antenna comprising an antenna radiation structure, a floor, a reflecting plate, a metalized via hole and metal sleeve cylinders. An antenna radiation part is a paster structure and consists of a round paster, an L-shaped paster and a parasitic round ring; a radiation paster is connected with the floor via the metalized via hole. The floor is connected with the reflecting plate via metal cylinders, and space between the floor and the reflecting plate is filled with an air layer and a dielectric layer. The antenna is excited centrally via a coaxial line. The antenna disclosed in the invention is simple in structure; within a certain inclination angle scope, the antenna is good in omnidirectional performance and axial ratio performance; the antenna is 16.3% in -10dB relative bandwidth and ranges from 6dB to 7.64dB in maximum radiation direction gain when frequency ranges from 1.44 GHz to 1.59 GHz.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a low-profile circularly polarized conical beam antenna. Background technique [0002] With the development of wireless communication technology, circularly polarized cone-beam antennas play an increasingly important role in satellite signal receiving systems. There are two types of satellite transmission signals: circular polarization and linearization. The circular polarization antenna on the ground can receive incoming waves from satellites in any polarization mode, and the radiated electromagnetic waves can also be received by antennas in any polarization mode on the satellite. , which is hand-orthogonal. The circularly polarized conical beam realizes the omnidirectional radiation characteristics of the antenna within a certain inclination angle range under the condition of ensuring circular polarization, and can transmit or receive electromagnetic waves of an...

AI Technical Summary

Problems solved by technology

After literature search, the article "High Gain Planar Antenna Arrays for Mobile Satellite Communications" published by Sheng Ye, Xianling Liang and Wenzhi Wang et al. in IEEEAntennas and Propagation Magazine. in 2012 proposed a high gain low Sectional array antenna, which has directional radiation characteristics, needs to adjust the direction of the antenna through a mechanical turntable during driving, which increases the instability and complexity of the system

In addition, the high processing cost also makes the application range of the antenna narrow

The low-profile circularly polarized conical beam antenna can more flexibly realize the omnidirectional reception of satellite signals without the need for an external mechanical turntable, but there are few inventions in this field, and further research is needed

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