Patent ID: 6831527
Filing Date: 2004-12-14
Classification: H03H,H04N

Abstract:
An insertion box comprising:a plurality of output ports, each output port being coupled to an output line, each output line exhibiting a characteristic impedance; a plurality of input ports, each input port being coupled to an input line, each input line exhibiting the characteristic impedance, wherein each input port corresponds with a predefined and unchanging set of output ports, so that a radio frequency (RF) signal conducted to a particular input port is conducted from the corresponding set of output ports, wherein an RF circuit is interposed between the input ports and the output ports, the RF circuit effecting said correspondence between input ports and output ports, wherein the RF circuit comprises splitter circuits and combiner circuits, wherein at least one splitter circuit exhibits an input impedance less than the characteristic impedance, and wherein at least one combiner circuit exhibits an output impedance less than the characteristic impedance.