Patent ID: 8526905
Filing Date: 2013-09-03
Classification: H03D,H04B

Abstract:
1. A merged baseband filter-transconductor-upconverter comprising: a baseband filter configured to receive a differential voltage signal at its input, the differential voltage signal having a positive polarity and a negative polarity, and generate at its output a differential baseband filter output; a transconductance block configured to generate a positive polarity transconductance current signal and a negative polarity transconductance current signal, the positive polarity transconductance current signal proportional to the positive polarity of the differential voltage signal and the negative polarity transconductance current signal proportional to the negative polarity of the differential voltage signal; and an upconverter configured to modulate the differential voltage signal and output a differential current signal at its output based on the differential baseband filter output, the differential current signal having a positive polarity and a negative polarity, the upconverter comprising: