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Abstract

Disclosed are a low-frequency band dipole unit, a multi-frequency band array antenna and an adjustment method therefor. The low-frequency band dipole unit includes a first microstrip dipole arm (1), a second microstrip dipole arm (2) and a support structure (3). The first microstrip dipole arm (1) and the second microstrip dipole arm (2) are each in a T-shaped thin arm structure with two vertical arms upwards, each have a thickness in the order of millimeters, and are each in a straight line when viewed from above. The support structure (3) has a slot structure for clamping and supporting the first microstrip dipole arm (1) and the second microstrip dipole arm (2). The multi-frequency band array antenna has a plurality of columns and/or quasi-columns therein, and at least one column or quasi-column of the plurality of columns and/or quasi-columns is composed of the foregoing low-frequency band dipole units completely. The low-frequency band dipole unit has weak coupling and low blocking characteristics, is flexibly nested, and has a great arrangement freedom. The multi-frequency band array antenna has good arrangement freedom and beam adjustment freedom.

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First Claim