Circularly-polarized antenna suitable for millimeter wave communication and communication equipment

• Main Authors: CHENG XIAOHE, CHEN XIAODONG, YAO YUAN, YU JUNSHENG, WU KAILAI
• Format: Patent
• Language: Chinese; English
• Published: 28.05.2021
• Subjects: ANTENNAS, i.e. RADIO AERIALS; BASIC ELECTRIC ELEMENTS; ELECTRICITY

Embodiments of the invention provide a circularly-polarized antenna suitable for millimeter wave communication and communication equipment. The circularly-polarized antenna comprises: a first rectangular waveguide, wherein a first waveguide inner cavity with a first rectangular section is formed in the first rectangular waveguide, and the first end of the first rectangular waveguide is provided with an input port communicating with the first waveguide inner cavity; a second waveguide inner cavity, wherein a second waveguide inner cavity with a second rectangular section is formed in the second rectangular waveguide, and the area of a second rectangle is smaller than the area of a first rectangle; and a transition structure, which a transition inner cavity is formed in the transition structure, the transition structure is arranged between and connected with the second end of the first rectangular waveguide and the first end of the second rectangular waveguide, the transition inner cavity communicates with the