The radio frequency equipment can identify specific targets and read and write related data through radio signals. It does not need to establish mechanical and optical contact between the identification system and specific targets.
The radio frequency refers to the electromagnetic frequency radiated into space, and its frequency ranges from 300KHz to 300GHz.
The radio frequency current is an abbreviation of high frequency alternating current electromagnetic wave. Alternating current that changes less than 1,000 times per second is called low-frequency current, and high-frequency current is greater than 10,000 times, and radio frequency is such a high-frequency current. High frequency is greater than 10K. RF 300K-300G is the higher frequency band of high frequency. The microwave frequency band 300M-300G is the higher frequency band of radio frequency.
In daily life, mobile phones, LOT systems, RFID, and other ion RF power supplies are Common . The equipment near the antenna is the RF front-end equipment. The radio frequency front end includes a transmitting path and a receiving path.
There are not many devices in the transmitting path and a few more devices in the receiving path. It includes low-noise amplifiers, filters, and other components. It includes indicators ,such as gain, sensitivity, and RF reception bandwidth. It should be designed according to product characteristics. The purpose is to ensure usefulness. The RF signal can be completely picked up from the space and sent to the subsequent stage of frequency conversion.
Post time: Mar-28-2020