Thursday, February 24, 2011

An antenna that receives and transmits both

Researchers at Stanford University have designed an antenna capable of transmitting while receiving another signal, without needing to change frequency and without risk of interference. You can experience it yourself. If you have two wireless microphones and you plug them on the same frequency, you hear nothing.

The signals interfere with the receiver that picks up your voice more. This problem is present everywhere, from cell phones that have a different mode of operation and using an expensive parade. Thus, your Wi-Fi router can not transmit a signal and receive the card network at the same time.

Scientists offer the analogy of two people who cry at the same time, which means they do not mutually agree. Specifically, the transmitted signal is much stronger than that received. Using an analogy, it's as if the person does not hear the cries of the other murmurs. In order to overcome this problem, researchers have found a way to modify the receiver to filter the message.

The system relies on a principle similar to that used by noise reduction headsets. The antenna transmits and knows what she cancels this signal so only to discover that she is supposed to receive. The scope of this technology are important. It can first be instantly double the available bandwidth and also facilitate radio communications.

Nobody talks about marketing yet, but researchers have already received the award for best presentation at MobiCom 2010.

No comments:

Post a Comment