Cross line polarization monopole antenna for pica-satellite

Abstract

The invention relates to a cross line polarization monopole antenna for a pica-satellite. The cross line polarization monopole antenna comprises a first fixing medium, a second fixing medium, a folded metal connecting part, a folded medium, a first vibrator and a second vibrator. The first vibrator and the second vibrator are formed by elastic plate pieces. A feed IPX connector is arranged on the folded medium. The folded metal connecting part is connected with a feed point of the folded medium. According to the technical scheme, the first vibrator and the second vibrator are attached and fixed to the surface of a shell of the satellite in a wound mode before the satellite is delivered from a cabin, the structure is compact, and increase of the size of the satellite is avoided; after the satellite is delivered from the cabin, the first vibrator and the second vibrator are unfolded and restored to form a communication state of mutual perpendicularity, the first vibrator and the second vibrator are connected through the folded metal connecting part and fed through the feed point, vertically-polarized waves and horizontally-polarized waves can be radiated without an additional matching feed network, directional diagrams of the horizontally-polarized waves and directional diagrams of the vertically-polarized waves are mutually complemented, and satellite-ground communication when the satellite is in any state can be achieved by means of matching of a ground station of cross line polarization.

Description

technical field [0001] The invention relates to the field of satellite communication, in particular to a pico-satellite orthogonal linearly polarized monopole antenna. Background technique [0002] Picosatellites have been more and more used and valued around the world because of their small size, short development cycle, and low cost. Due to the limitation of the size and weight of pico-satellites, some pico-satellites do not have an attitude control system, which requires that the communication antennas of pico-satellites be omnidirectional in addition to the volume and weight requirements. At present, there are generally two types of satellite antennas: microstrip antennas and whip antennas. The air microstrip antenna has a large size at low frequencies, and it radiates in half space; if the material of the whip antenna is selected properly, it can meet the volume and communication requirements of the satellite before and after leaving the cabin, but the radiation patter...

AI Technical Summary

Problems solved by technology

The air microstrip antenna has a large size at low frequencies, and it radiates in half space; if the material of the whip antenna is selected properly, it can meet the volume and communication requirements of the satellite before and after leaving the cabin, but the radiation pattern of the general whip antenna exists Zero Point cannot achieve 360-degree omnidirectional coverage

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