An interference canceller 200 and corresponding method thereof operates to reduce the level of an interfering signal and includes a circulator 202 comprising a transmitter port, a receiver port and an antenna port, a transmission line 210 comprising a first end coupled to the transmitter port and a second...http://www.google.de/patents/US20040192232?utm_source=gb-gplus-sharePatent US20040192232 - Method and apparatus for reducing interfering signals in a transmitter
