Patent ID: 7816991

Claim:
A signal splitter comprising: a gain-controllable circuit arranged to provide a first and a second pair of complementary gain-controlled signals in response to an input signal wherein in each pair a first said gain-controlled signal is the input signal amplified with a gain G comprised in a range between a minimum gain Gmin and a maximum gain Gmax, and a second said gain-controlled signal is the input signal amplified with a complementary gain Gmax-G; a fixed-gain output circuit arranged to make a weighed sum of said gain-controlled signals in the first pair of complementary gain-controlled signals wherein respective weighing factors for said gain-controlled signals are substantially similar; and a controllable-gain output circuit arranged to make a weighed sum of said gain-controlled signals in the second pair of complementary gain-controlled signals wherein respective weighing factors, for said gain-controlled signals are substantially different.