Patent ID: 8552809

Claim:
A system comprising: a stacked waveguide circulator comprising a first side, second side, top and bottom, the top being opposite the bottom, the top and bottom being adjacent to the first and second sides, the first side further comprising a first port and a second port, the first port being above the second port, the second side further comprising a third port and fourth port, the top of the stacked waveguide circulator comprising a first magnet, and the bottom comprising a second magnet configured to direct signals to or from the fourth port; a first transmit filter coupled to a transmitter and the first port on the first side of the stacked waveguide circulator; a first receive filter coupled to a receiver and the second port on the first side of the stacked waveguide circulator, wherein the first receive filter is stacked with the first transmit filter; an antenna waveguide coupled to the third port on the second side of the stacked waveguide circulator, the stacked waveguide circulator being configured to receive signals from the first transmit filter and an antenna filter and provide signals to the antenna filter and the first receive filter; and a second transmit filter coupled to a second transmitter and to the fourth port.