Antenna system

An antenna system, comprising:

• a first radiation source, a second radiation source, a reflection apparatus, and a first transmission apparatus, wherein a direction of an emitting port of the first radiation source and a direction of an emitting port of the second radiation source are arranged back to back along a same axis, a reflective surface of the reflection apparatus and the first transmission apparatus are arranged opposite to each other, the emitting port of the first radiation source points to the reflective surface of the reflection apparatus, and the first transmission apparatus has a ring-shaped transmission area, wherein
• the first radiation source is configured to emit a first signal to the reflective surface of the reflection apparatus;
• the reflection apparatus is configured to reflect the first signal to the ring-shaped transmission area of the first transmission apparatus by using the reflective surface;
• the first transmission apparatus is configured to radiate, out of the antenna system through the ring-shaped transmission area, the first signal reflected by the reflective surface;
• and
• the second radiation source is configured to emit a second signal, wherein the second signal is radiated out of the antenna system through an area formed based on an inner diameter of the ring-shaped transmission area.