Patent ID: 8593233

Claim:
A multiplexor, said multiplexor comprising: an output including at least an output center conductor, an output intermediate conductor and an output outer conductor in coaxial arrangement, there being a characteristic impedance between said output center conductor and said output outer conductor; a first input including at least a first input center conductor and a first input outer conductor in coaxial arrangement, the first input having a characteristic impedance between said first input center conductor and said first input outer conductor equal to said output characteristic impedance; a second input including at least a second input first signal conductor and a second input second signal conductor; a first switch path including a first switch operable to connect/disconnect said first input center conductor and said output center conductor; a first input conductive path between said first input outer conductor and said output outer conductor, said first input conductive path being adjacent to said first switch path and being operable to provide said output characteristic impedance between the first input conductive path and the first switch path for signal frequencies that produce transmission line characteristics; a second switch path including a second switch operable to connect/disconnect said second input first signal conductor and said output center conductor; and a third switch path including a third switch operable to connect/disconnect said second input second signal conductor and said output intermediate conductor, said third switch path being adjacent said second switch path and being operable to guard said second switch path when said third switch path is provided with a guard voltage.