This application relates to an
antenna element, including a feed section, a connecting section, and two radiating sections. The connecting section connects the feed section and the radiating sections, and the feed section feeds signals to the two radiating sections respectively. The radiating sections are constructed as
metal-filled plate-like structures, and the two radiating sections are spaced apart from each other. Each radiating section includes a curved first edge portion, the
radiation direction of which is opposite to the connecting section, and the length L1 of the first edge portion satisfies the condition: 1 / 8λ≤L1≤3 / 8λ; where λ is the
wavelength of the electromagnetic wave
signal transmitted by the
antenna element in the medium. This application's
antenna element, by having two radiating sections arranged opposite each other, and each forming a curved first edge portion to create a main radiating segment, reduces the
antenna aperture and thereby achieves a wider
radiation angle, while simultaneously possessing higher accuracy and sensitivity. This application also relates to an antenna element manufacturing method, an
antenna array, a
radar, and a terminal.