Antenna device used to perform dynamic control for feeding points and radio frequency chain circuit

An antenna device comprising:

• a first antenna configured to wirelessly transceive a first signal, and comprising a first feeding point configured to transceive the first signal through a conductive path;
• a second antenna configured to wirelessly transceive a second signal, and comprising a second feeding point configured to transceive the second signal through a conductive path;
• a switch unit coupled among the first feeding point, the second feeding point and a radio frequency chain circuit and configured to selectively transceive one of the first signal and the second signal;
• and
• the radio frequency chain circuit configured to transceive and process the one of the first signal and the second signal transceived by the switch unit;
• wherein the radio frequency chain circuit comprises a power amplifier and a low noise amplifier, and a nearest gap between the first antenna and the second antenna is less than 30 millimeters (mm).