In the RFID system, whether it is low frequency, high frequency, or UHF, tags or readers, the antenna is a very important part. This is because the information in the chip needs to be transmitted through the antenna. Therefore, the performance of the RFID system is closely related to the antenna design to a large extent.

     After using barcodes, many drawbacks have been discovered. For example, barcodes require close optical alignment to be read, and the information capacity is small, and barcode information cannot be modified. In addition, barcodes are also easily affected by environmental influences, stains, or damage.

     It is precisely because of the many shortcomings of barcodes in practical applications that people think about it. People naturally think that electromagnetic wave communication will not be blocked by the medium, and there will be no unrecognizable problems. In addition, the penetration ability of electromagnetic waves can realize multiple items together. Recognition.

     Under normal circumstances, the same antenna can be used as both a transmitting antenna and a receiving antenna. The basic characteristic parameters of the same antenna as transmitting or receiving are the same.

     In practical applications, it is often necessary to customize the antenna design to achieve better results in specific situations. Many parameters of the antenna can be adjusted in the antenna design, such as resonance frequency, impedance, gain, aperture or radiation pattern, polarization, efficiency and bandwidth.

     As RFID application scenarios continue to increase, people have put forward more and more requirements for RFID systems. Among them, many practical requirements are also put forward for the antenna. For example, the common ones are: the RFID antenna must be small enough, the RFID antenna provides the largest possible signal and energy to the tag chip, the RFID antenna is robust, and the antenna cost is low.

     RFID antennas involve a variety of professional fields such as materials, antenna design, electromagnetics, and packaging technology. This not only determines the considerable complexity of the design and production of antennas, but also allows us to make breakthroughs in many aspects to better promote RFID Application and development of technology.