IoT is the current mainstream trend in technology. In this way, we will discuss the industrial changes and market opportunities of the digital revolution, and will further analyze the technology and application fields of IoT.

Radio Frequency Identification (RFID) is a technology used to identify items in a unique manner by the use of radio waves. It is unique in that it is capable of scanning hundreds of objects at the same time. Although the term of RFID is not often heard, we use it in our daily lives more than we realize, and its use continues to increase.

RF filters are electronic components that are used to allow or prevent selected signals or frequencies in order to eliminate noise or pass through of unwanted signals. Common types are low pass filters, high pass filters, and bandpass filters.

There are two kinds of RFID systems that exist- passive and active. If you're new to RFID, you might be wondering what the difference is between these types, and which one is best for your application. Below, we provide a short answer.