Space power synthetic antenna of curve array feed source bifocal parabolic reflecting surface

Abstract

The invention relates to a space power synthetic antenna of a curve array feed source bifocal parabolic reflecting surface, comprising a reflecting surface and a feed source array. The reflecting surface of the antenna is a bifocal parabolic reflecting surface formed by a parabola with a shorter focal length on the horizontal plane along another parabola with a longer focal length on the verticalsurface, the feed source array is a parabola curve feed source array formed by aligning a plurality of horn antennae on a parabola which is formed by translating the parabola with the longer focal length to the focus of the parabola with the shorter focal length, the phase of each horn antenna is set according to the Huygens-Fresnel principle, and each horn antenna achieves the maximum in-phase synthesis in the maximum radiation direction. Radiation generated by the space power synthesis of the feed source array irradiates the bifocal parabolic reflecting surface which reflects electromagnetic waves to form a needed wave beam so as to improve the antenna gain. The antenna is simple in structure and has high gain.

Description

technical field [0001] The present invention relates to the technical field of space power synthesis, specifically a parabolic curved reflector antenna for space power synthesis, which is a reflector antenna technology for reflecting, superimposing and synthesizing electromagnetic waves radiated by horn arrays in space . Background technique [0002] In radar, electronic countermeasures and long-distance communication, it is necessary to obtain high-power directional electromagnetic radiation beams. When a single signal source cannot generate enough power, it is necessary to use a power combining method to combine multiple lower-power signals into the required high-power radiation. There are two methods: one is to use power combining based on circuits or waveguides Technology, the multi-channel signal is combined by the combination network of the circuit or waveguide, and then radiated out through the antenna, but the combination network itself has loss, which reduces the e...

AI Technical Summary

Problems solved by technology

More speaker units mean more power amplifier channels, which will greatly increase the cost of the system; if the distance between the array elements is increased, according to the antenna array theory, when the distance between the array elements is greater than 1 wavelength, the antenna pattern Grating lobes will appear, causing power to radiate in unwanted directions. On the one hand, this wastes energy and reduces the efficiency of power combination. On the other hand, it will cause unnecessary interference

Due to the limitation of this factor, the existing technology cannot obtain high-gain, narrow-beam high-power radiation

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