In modern wireless communication system, the direct RF-modulation for transmitting signal is a new developing trend of RF radio.
在现代无线通信系统中，对发射信号进行直接射频调制已成为射频无线电的发展趋势。
2
Transmitting any state secret on the Internet or any other public information network or in any wire or radiocommunication without secrecy safeguards;
在互联网及其他公共信息网络或者未采取保密措施的有线和无线通信中传递国家秘密的；
3
Based on that, a system of collecting and transmitting bio electric signal using infrared radiocommunication was designed. The problem of interference is discussed and a solution is given.