What is an antenna?
* Question
| What is an antenna? |
* Answer
| An antenna (Antenna) is a device that transmits or receives a radio frequency signal in the form of electromagnetic waves, that is, a device that can convert a current signal into an electromagnetic wave or convert the received electromagnetic wave into a current signal.The FID system includes two types of antennas, one is the antenna on the RFID tag, which is generally integrated with the RFID tag; the other is the reader antenna, which can be built in the reader or the coaxial cable.
Connected to the RF port of the reader.Antennas play an important role in wireless communication systems, and the invention of antennas has made the electromagnetic spectrum a key resource for human reusability.An antenna is a device that uses a metal wire, a metal surface, or other material to form a certain shape and is erected in a certain space to emit or receive a radio frequency signal in the form of electromagnetic waves. |
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