Abstract: An apparatus includes a first mixer port (12), a second mixer port (14), a third mixer port (16), a first hybrid device (20) responsive to the first mixer port (12) and having a first and a second input/output port, a second hybrid device (40)responsive to the second mixer port (14), the third mixer port (16) responsive to the second hybrid device (40), and a switching device (30). The switching device (30) includes a first port (31) responsive to the first input/output port of the first hybrid device (20), a second port (32) responsive to the second port of the first hybrid device (20),a third port (34) in communication with the second hybrid device (40), a fourth port (36) in communication with the second hybrid device (40), and a switching element responsive to the first, second, third, and fourth ports (31, 32, 36, 34). The switching element includes a first field effect transistor (60) and a second field effect transistor (62).