Two-way radio on a single chip
Two-way communications requires – obviously – both transmit as well as receive capability. However, when we want to fit this into the one device, a filter is required between the transmit and receive circuits to separate these signals from each other. Without a reliable filter, communications would be impossible. The transmitted signal is significantly stronger than the received signal – and that is exactly the problem. However, researchers from Cornell University have found a solution for this.