Patent ID: 9184699
Filing Date: 2015-11-10
Classification: H03B,H03C,H03M,H04B

Abstract:
1. An apparatus to provide an output frequency signal, comprising: a digital to analog converter (DAC) component to receive and convert a digitally processed baseband signal, and to output a first analog baseband signal and a second analog baseband signal, the DAC component including a plurality of switchable current sources arranged in a matrix and responsive to the digitally processed baseband signal, each of the first analog baseband signal and the second analog signal being a distinct fraction of the digital baseband signal; a first sub-mixer component to modulate the first analog baseband signal and a phase-modulated frequency signal to generate a first modulated signal; a second sub-mixer component to modulate the second analog baseband signal and the phase-modulated frequency signal to generate a second modulated signal; a component to receive the first modulated signal and the second modulated signal and to provide the output frequency signal, wherein at least one of the first and second sub-mixer components is switchable, and wherein a size of the first sub-mixer component and a size of the second sub-mixer component is proportional in size to a maximum level of the first and second analog base band signals, respectively.