Millimeter wave circularly polarized antenna unit with slot coupling multi-point feeding

• Main Authors: LIU NING, LIU JUN, SONG RUILIANG, CUI GUANFENG, SHANG GUOTAO
• Format: Patent
• Language: Chinese; English
• Published: 18.10.2022
• Subjects: ANTENNAS, i.e. RADIO AERIALS; BASIC ELECTRIC ELEMENTS; ELECTRICITY

The invention discloses a millimeter wave circularly polarized antenna unit with slot coupling multi-point feeding, and belongs to the technical field of antenna equipment. The antenna is composed of a parasitic patch, a radiation patch, a coupling gap, a power division feed network, a square equivalent shielding cavity and the like. The coupling slots are n-shaped, so that the transverse space occupied by the four groups of slots is greatly compressed on the premise of ensuring the length required by the resonance of the coupling slots, and the signal crosstalk phenomenon with a feeder line below is reduced; the one-to-four power division feed network is in a strip line form, four output ports sequentially output excitation signals with the same amplitude and the phase difference of 90 degrees, and wiring of the two-stage one-to-two Wilkinson power divider is achieved in the same layer through wiring on the outer sides of the coupling slots shaped like the Chinese character'ji '. By adopting a multi-point fe