Classification of antennas

According to different classification methods, can be divided into different types. (Common antennas are listed below)

(1) According to the nature of the work, it can be divided into transmitting antenna, receiving antenna and transceiver common antenna.

(2) According to the characteristics of the antenna

N From directivity:

定向天线

全向天线（像一个苹果）等

nFrom the polarization characteristics: wired polarization antenna, circular polarization antenna and elliptic polarization antenna.

Linear polarization antenna is divided into vertical polarization and horizontal polarization antenna. Circularly polarized antennas are divided into right and left circularly polarized antennas.

Under normal circumstances, transmitting and receiving require the same polarization of the antenna. (for example; Linear polarized antennas are used for transmitting and receiving antennas.)

A loss condition of different polarization antenna collocation (unit: dBi)