Polarization-agility microstrip antenna

Abstract

The invention discloses a polarization-agility microstrip antenna and relates to the field of microstrip antennas. The polarization-agility microstrip antenna comprises a dual-polarization microstrip antenna, a phase-shifting power division network, a first feed network and a second feed network, wherein a logic control unit is arranged in the phase-shifting power division network, phase-shifting power division network divides radio frequency signals input by an input port arranged in the phase-shifting power division network into signals with identical amplitude and phase differences of -90 degrees, 0 degree, 90 degrees and 180 degrees through the electric-regulation control by the logic control unit, the two paths of signals of the phase-shifting power division network are output to an output port I and an output port II arranged in the phase-shifting power division network, the output port I is connected with the first feed network, the output port II is connected with the second feed network, and the first feed network and the second feed network are respectively connected with an input port I and an input port II arranged in the dual-polarization microstrip antenna. The broadband microstrip antenna is simple in structure, convenient to use and capable of achieving optional polarization agility.

Description

technical field [0001] The invention relates to the field of microstrip antennas, in particular to a polarization-agile microstrip antenna. Background technique [0002] With the continuous increase of wireless device users and the continuous improvement of transmission rate, limited spectrum resources have become increasingly tense. The use of polarization information can greatly improve the communication capacity without increasing the occupied spectrum resources. Therefore, the application of polarization information has been extensively studied in recent years. Especially in many practical applications such as satellite communication, radar polarization measurement, electronic reconnaissance and electronic countermeasures, it is often desired that the antenna has the function of polarization agility, that is, to control a certain variable through mechanical or electronic control, so as to control the antenna's different polarization states. Literature [1] reported tha...

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Problems solved by technology

However, the currently reported polarization-agile microstrip antennas can only change between two polarizations, and the working bandwidth is very narrow.

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