Abstract: A method of generating motion in a second fluid (f2) of a series of hollow elements (12) which are bound to each other in sequence and fillable with a first fluid (f1) lower in density than the second fluid (f2), the two fluids being immiscible, includes the steps of arranging hollow elements (12) to move along an endless guide (9) vertically extending inside a container (1); providing two chambers (C1, C2) positioned at different heights in the container (1), both chambers containing the first fluid (f1) and having an opening downwards which the hollow elements (12) enter and exit; filling the container (1) with the second fluid (f2); causing each of the hollow elements (12) first to open and then close in chambers (C1, C2) establishing a transmission of motion of the series of hollow elements (12) to a power take-off outside the container (1). An apparatus is also described.

Abstract: A radio frequency (RF) router is disclosed. The RF router utilizes resistive input signal splitters on an input module to divide input RF signals received at RF signal input terminals into a plurality of backplane signals. The backplane signals are transmitted to one or more output modules where the backplane signals are each resistively split into a plurality of split backplane signals. A split backplane signal corresponding to each of the input RF signal is coupled to a backplane signal selection stage. The backplane signal selection stage couples on of the split backplane signals to an RF signal output terminal.

Abstract: A radio frequency (RF) router is disclosed. The RF router utilizes resistive input signal splitters on an input module to divide input RF signals received at RF signal input terminals into a plurality of backplane signals. The backplane signals are transmitted to one or more output modules where the backplane signals are each resistively split into a plurality of split backplane signals. A split backplane signal corresponding to each of the input RF signal is coupled to a backplane signal selection stage. The backplane signal selection stage couples on of the split backplane signals to an RF signal output terminal.