Patent ID: 6194980
Filing Date: 2001-02-27
Classification: H01P

Abstract:
A radio frequency combining system for combining radio frequency signals into a radio frequency combining system output comprising:a plurality of n series-connected quadrature hybrid couplers each having an output port, a first input port, a second input port, and an isolation port;a first coupler of said plurality of n series-connected quadrature hybrid couplers having the first input port connected to a first radio frequency source, the second input port connected to a load, the isolation port connected to a first short, and the output port connected to the input port of a second quadrature hybrid coupler in the series;a second coupler of said plurality of n series-connected couplers having the first input port connected to the output port of the first coupler, the second input port connected to a second radio frequency source, the isolation port connected to a second short, and the output port connected to the input port of a next quadrature hybrid coupler in the series; andan nth coupler of said plurality of n series-connected quadrature hybrid couplers having the first input port connected to the output port of a n-1 coupler in the series, the second input port connected to an nth radio frequency source, the isolation port connected to an nth short, and the output port forming the radio frequency combining system output.