Signal splitting network wherein an output from second coupler is fed back to isolated part of first coupler

Claim 2

A combination comprising: first and second bisymmetric directional couplers each having first, second, third and fourth ports, each of said couplers being responsive to a time varying signal applied to the first port thereof through an impedance of a predetermined value for providing first and second transfer signals at the second and third port thereof respectively; said fourth port being isolated from said first port when each of the second, third and fourth ports thereof are terminated by an impedance of said predetermined value; said first and second transfer signals being respectively first and second time dependent functions of said time variable signal applied to said first port, said respective first and second time dependent functions of said first and second couplers being representative of the same physical properties and having the same mathematical form; and said first and second time dependent functions of each of said respective first and second couplers being dual showing that the circuit paths between said respective first and second and first and third of said ports are dual; said combination characterized by: means for connecting said third and fourth ports of said first coupler to said first and third ports of said second coupler respectively so that if said first port of said first coupler is employed as an input port, said second port of said first coupler and said second port of said second coupler will serve as output ports and said fourth port of said second coupler will be isolated from said first port of said first coupler.

Claim 3

The combination as defined in claim 1 in which: said first and second time dependent functions of said first and second couplers are described by differential equations of the first order so that one of said dependent functions is representative of a capacitive characteristic while a second of said time dependent functions is representative of an inductive characteristic.

Claim 4

The combination as defined in claiM 1 also including: a signal generator; and means for connecting said signal generator to said first port of said first coupler.

Claim 5

A combination as defined in claim 3 also including: means for terminating said second port of said first coupler and said second and fourth ports of said second coupler with impedances of said predetermined value.

Claim 6

The combination as defined in claim 4 in which said first time dependent function is a function of inductance and said second time dependent function is a function of capacitance.

Claim 7

A combination comprising: first and second bisymmetric directional couplers each having first, second, third and fourth ports, each of said couplers being responsive to a time varying signal applied to the first port thereof through an impedance of a predetermined value for providing first and second transfer signals at the second and third port thereof respectively; said fourth port being isolated from said first port when each of the second, third and fourth ports thereof are terminated by an impedance of said predetermined value; and said first and second transfer signals being respectively first and second time dependent functions of said first and second couplers being representative of the same physical properties and having the same mathematical form; said combination characterized by: said first and second time dependent functions of each of said respective first and second couplers being dual showing that the circuit paths between said respective first and second and first and third of said ports are dual; means for applying said second transfer signal from said first coupler to said first port of said second coupler to render said second transfer signal from said second coupler a function of both said first time dependent functions of said first and second couplers; and means for applying said second transfer signal of said second coupler back to drive said fourth port of said first coupler creating a recirculating signal which reflects the characteristics between said first and third ports of said second coupler to alter the characteristics between said first and second ports of said first coupler without causing mismatch at the first port of said first coupler so that if said first port of said first coupler is employed as an input port, said second port of said first coupler and said second port of said second coupler will serve as output ports and said fourth port of said second coupler will be isolated from said first port of said first coupler.

Claim 8

A combination comprising: first and second bisymmetric directional couplers each having first, second, third and fourth ports, each of said couplers being responsive to a time varying signal applied to the first port thereof through an impedance of a predetermined value for providing first and second transfer signals at the second and third port thereof respectively; said fourth port being isolated from said first port when each of the second, third and fourth ports thereof are terminated by an impedance of said predetermined value; and said first and second transfer signals being respectively first and second time dependent functions of said first and second couplers being representative of the same physical properties and having the same mathematical form; said combination characterized by: said first and second time dependent functions of each of said respective first and second couplers being dual showing that the circuit paths between said respective first and second and first and third of said ports are dual; means for applying said second transfer signal from said first coupler to said first port of said second coupler to render said second transfer signal from said second coupler a function of both said first time dependent functions of said first and second couplers; and means for applying said second transfer signal of said second coupler back to drive said fourth port of said first coupler creating a recirculating signal which reflects the characteristics between said first and third ports of said second coupler to alter the characteristics between said first and second ports of said first coupler without causing mismatch at the first port of said first coupler so that if said first port of said first coupler is employed as an input port, said second port of said first coupler and said second port of said second coupler will serve as output ports and said fourth port of said second coupler will be isolated from said first port of said first coupler.