A Broadband Dual Polarization Array Antenna Unit

An array antenna and wide-band technology, applied in the field of new wide-band dual-polarization array antenna units, can solve problems such as complex structures of wide-angle impedance matching layers, achieve dual-polarization feeding, facilitate integration, and have good shielding effects Effect
CN111129723BActive Publication Date: 2022-04-08BEIJING RES INST OF TELEMETRY +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING RES INST OF TELEMETRY
Publication Date
2022-04-08

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Abstract

A new broadband dual-polarization array antenna unit belongs to the field of antenna technology. The top of the antenna unit is grounded through a metallized through hole around the unit boundary, which effectively reduces the fluctuation of the active standing wave ratio of the unit during the array scanning process, which is beneficial to Realize impedance matching under wide scanning angle, improve the beam scanning characteristics of the array antenna unit; use the radiation patch combined with the reflective patch to increase the bandwidth of the antenna unit, and realize the equalization of the E-plane and H-plane radiation patterns; A grounding hole is added in the middle of the radiation patch of the antenna unit, so that the center of the radiation patch becomes a zero potential point, combined with the method of switching the position of the feed point with a strip line, the two port positions required by the dual-polarization antenna unit are realized The flexible selection of is beneficial to the integration of the antenna unit and the TR component.
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Description

technical field

[0001] The invention relates to a novel broadband dual-polarization array antenna unit, in particular to a novel broadband dual-polarization array antenna unit for a large-angle scanning array antenna system, and belongs to the technical field of antennas. Background technique

[0002] Phased array antennas are widely used in many fields such as radar, measurement and control, and communication because of their outstanding advantages such as fast scanning of beam direction, flexible change of beam shape, spatial synthesis of radiated power, and simultaneous multi-beam realization. For an array antenna with a scanning range of ±60°, in order to avoid the appearance of grating lobes, the element spacing is generally about half a wavelength. Smaller unit spacing increases the mutual coupling between adjacent units, which in turn leads to fluctuations in the active input impedance of the units in the array and deterioration of the pattern of the units in the arra...

Claims

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