US Patent 9820311 Adapter and associated method for full-duplex wireless communication

An adapter for enabling full-duplex wireless communications is described, along with methods for operating the adapter. The adapter operates as an intermediary between a transmit antenna and receive antenna on the one hand, and a transceiver on the other hand. The adapter communicates with the transceiver using different frequencies for outbound and inbound radio-frequency signals. However, with respect to the transmit antenna and receive antenna, the adapter transmits outbound and receives inbound radio frequency signals using the same frequency. The adapter includes cancellation circuitry to reduce the self-interference cause by transmitting and receiving on the same frequency.