Patent ID: 7991076

Claim:
A signal scaling device comprising: a receiver adapted to receive a phase and/or amplitude modulated signal to be transmitted; and a processing means operably coupled to the receiver and arranged to multiply said phase and/or amplitude modulated signal with a chosen complex gain in order to output said phase and/or amplitude modulated signal with a chosen scaled amplitude and a chosen phase offset, wherein said phase and/or amplitude modulated signal is equal to I+jQ, where I is an in-phase component signal and Q is a quadrature component signal, said complex gain equal to k 1 +jk 2 , where k 1 and k 2 are chosen gain coefficients, and wherein said chosen scaled amplitude depends on a gain factor equal to (k 1 2 +k 2 2 ) 1/2 , and said phase offset is equal to arctan(k 2 /k 1 ), and wherein said gain coefficient k j is equal to ∑ i = - b B - 1 ⁢ a i , j ⁢ 2 i , where j=1,2 and where a i,j is a bit coefficient equal either to 0 or 1, b is a number of bits representing a fractional part of a chosen binary number η from which a dynamic range value is built, and B is a number of bits representing an integer part of said chosen binary number η, and wherein said processing means comprises: a selection means arranged to output said bit coefficients a i,j defining said chosen gain coefficients k 1 and k 2 ; and a scaling means fed with said in-phase component signal I and quadrature component signal Q of a phase and/or amplitude modulated signal to transmit, the scaling means arranged to output said phase and/or amplitude modulated signal with a scaled amplitude depending on said outputted bit coefficients a i,j .