High isolation multicoupling apparatus
OwnerAldo M. Scandurrainventor
Life of this patent
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Abstract
A multicoupler for coupling a single energy source to a plurality of utilization devices including an impedance transformer connected to the source and driving at least one active device such as a pair of series connected emitter followers, a plurality of isolation networks each connected to the output of the active device with each of said isolation networks providing an output for at least one utilization device, and structural arrangements for connection of the isolation networks to the output of the active device to minimize undesirable inductive effects.
Claims31
A multicoupler for coupling a single energy source to at least two or more utilization devices such as receivers and the like comprising a matching network having an input connected to said source and an output, a substantially frequency insensitive amplifier including at least one amplifying device having an output terminal, a high input impedance and a very low output impedance, a connection between the output of said matching network and the input of said amplifier, at least two passive isolation networks each having an input and an output for connection to a utilization device, and a direct coupling between the output terminal of said amplifying device and the input of each isolation network whereby each isolation network will directly view only the output impedance of the output terminal of said amplifying device in parallel with the input impedance of the other isolation network, said isolation networks each presenting a substantially resistive load to said amplifier, draw substantially zero DC current and produce outputs having substantially matched amplitude and phase characteristics.
A multicoupler for coupling a single energy source to at least two or more utilization devices such as receivers and the like comprising an impedance matching network having an input connected to said source and an output, a first emitter follower having an input terminal connected to the output of said network, a base, and an output terminal and a second emitter follower having an input terminal connected to the output terminal of the first emitter follower and an output terminal, at least two passive isolation networks coupling at least two utilization devices to the output terminal of said second emitter follower, each isolation network having an input directly-coupled to the output terminal of said second emitter follower and an output and each isolation network comprising at least one impedance connected between the input and output thereof and presenting a substantially resistive load to the output terminal of said second emitter follower and drawing substantially zero DC current, the impedance seen by each isolation network constituting the output impedance of said second emitter follower in parallel with the combined input impedance of the remaining isolation networks connected in parallel.
A multicoupler for coupling a single energy source to at least two or more utilization devices such receivers and the like comprising a matching network having an input connected to said source and an output, a substantially frequency insensitive amplifier having a high input impedance and a very low output impedance, a connection between the output of said matching network and the input of said amplifier, at least two passive isolation networks each having an input and an output for connection to a utilization device, and a direct coupling between the output of said amplifier and the input of each isolation network whereby each isolation network will directly view only the output impedance of the amplifier in parallel with the input impedance of the other isolation network, said isolation networks each presenting a substantially resistive load to said amplifier and producing outputs having substantially matched amplitude and phase characteristics, a signal distribution plate of appreciable area, substantially non-reactive means electrically connecting said plate to the output of said amplifier and connections of negligible length between the input of each isolation network and said distribution plate, each of said isolation networks includes a series network having at least one resistive element connecting the input and output terminals thereof with one terminal of said isolation network comprising the input and means electrically connecting said one terminal of said isolation network to said signal distribution plate with a negligible length of conductor, at least one of said series network elements having terminals extending from opposite ends thereof, and one end of said element is in closely abutting relationship to said plate, said plate being positioned within a housing having at least one wall of substantial thickness, said distribution plate is positioned adjoining said wall and has a plurality of spaced openings to receive said element leads and said wall has a plurality of openings aligned with the openings in said plate to accommodate said elements.
A multicoupler for coupling a single energy source to at least two or more utilization devices such as receivers and the like comprising a matching network having an input connected to said source and an output, a substantially frequency insensitive amplifier having a high input impedance and a very low output impedance, a connection between the output of said matching network and the input of said amplifier, at least two passive isolation networks each having an input and an output for connection to a utilization device, and a direct coupling between the output of said amplifier and the input of each isolation network whereby each isolation network will directly view only the output impedance of the amplifier in parallel with the input impedance of the other isolation network, said isolation networks each presenting a substantially resistive load to said amplifier and producing outputs having substantially matched amplitude and phase characteristics, a signal distribution plate of appreciable area, substantially non-reactive means electrically connecting said plate to the output of said amplifier and connections of negligible length between the input of each isolation network and said distribution plate, said signal distribution plate including at least two interconnected portions angularly disposed one relative to the other.
A multicoupler for coupling a single energy source to at least two or more utilization devices such as receivers and the like comprising a matching network having an input connected to said source and an output, a substantially frequency insensitive amplifier having a high input impedance and a very low output impedance, a connection between the output of said matching network and the input of said amplifier, at least two passive isolation networks each having an input and an output for connection to a utilization device, and a direct coupling between the output of said amplifier and the input of each isolation network whereby each isolation network will directly view only the output impedance of the amplifier in parallel with the input impedance of the other isolation network, said isolation networks each presenting a substantially resistive load to said amplifier and producing outputs having substantially matched amplitude and phase characteristics, a signal distribution plate of appreciable area, substantially non-reactive means electrically connecting said plate to the output of said amplifier and connections of negligible length between the input of each isolation network and said distribution plate, said signal distribution plate being circular.
A multicoupler for coupling a single energy source to at least two or more utilization devices such as receivers and the like comprising a matching network having an input connected to said source and an output, a substantially frequency insensitive amplifier having a high input impedance and a very low output impedance, a connection between the output of said matching network and the input of said amplifier, at least two passive isolation networks each having an input and an output for connection to a utilization device, and a direct coupling between the output of said amplifier and the input of each isolation network whereby each isolation network will directly view only the output impedance of the amplifier in parallel with the input impedance of the other isolation network, said isolation networks each presenting a substantially resistive load to said amplifier and producing outputs having substantially matched amplitude and phase characteristics, a signal distribution plate of appreciable area, substantially non-reactive means electrically connecting said plate to the output of said amplifier and connections of negligible length between the input of each isolation network and said distribution plate, said amplifier including an output transistor with the output terminal forming the output of said amplifier being in the form of a flat strip of conductive material connected to said distribution plate.
Means for feeding a high frequency signal from at least one output terminal of an amplifying device to a plurality of utilization devices with the introduction of negligible reactive effects comprising a signal distribution plate of conductive material and appreciable area and negligible thickness as compared to the area, means having negligible reactance connecting said terminal to said distribution plate, a plurality of isolation networks each having an input and output terminal and a series network including at least a resistive element connecting said terminals, a substantially non-reactive coupling between the input of each isolation network and said distribution plate with one element of said series network positioned with said one end in close abutting relationship to said plate, means connecting the output terminals of each of said isolation networks to a utilization device, and means electromagnetically shielding each of said one elements one from the others.
Dependencies are inferred from the claim text.