1. A system, comprising: an n input, radio frequency (RF) signal matrix comprising a plurality of two-to-one RF signal routing units, each RF signal routing unit including a first switching unit at an output of the respective signal routing unit, the first switching unit configured to connect the output to one of a bypass conductive path and a first signal combining conductive path, a second switching unit at a first input to the respective signal routing unit, the second switching unit configured to connect the first input to one of the bypass conductive path and the first signal combining conductive path, a third switching unit at the output configured to selectively connect the output to a second signal combining conductive path that is fixedly connected to a second input of the respective signal routing unit, wherein the first, second and third switching units are configured to operate cooperatively to one of connect the first input to the output via the bypass conductive path while electrically isolating the first and second signal combining conductive paths from the output, and connect the first and second inputs to the output via the first and second signal combining conductive paths while electrically isolating the bypass conductive path from the output, wherein the plurality of RF signal routing units are connected in at least two levels with outputs from a first level connected to inputs for a second level to form n inputs for the RF signal matrix, where n is a positive integer, and at least one output for the RF signal matrix, and wherein any number of the n inputs may be employed without unused inputs loading the at least one output.