Patents by Inventor Simon Louwsma

Simon Louwsma has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Mixer circuit, receiver comprising a mixer circuit, wireless communication comprising a receiver, method for generating an output signal by mixing an input signal with an oscillator signal
    Publication number: 20060135109
    Abstract: The invention relates to a mixer circuit comprising an input node for receiving an input signal, a first output node 202, and a second output node 203, voltage to current conversion means and switching means operatively coupled to each other and to the input node, the first output node and the second output node to generate a mixed input signal at the first output node and the second output node in response to an oscillator signal. In an embodiment the voltage to current conversion means comprises a first and a second voltage to current converter, implemented as N-MOSFETs M2 and M3, with their gates connected to the input node. The drain of M2 is connected to the first output node 202, while the drain of the M3 is connected to the second output node M3. The source of M2 is connected to the switching node 221, while the source of M3 is connected to the second switching node 222.
    Type: Application
    Filed: June 1, 2004
    Publication date: June 22, 2006
    Inventors: Eric Klumperink, Simon Louwsma, Eduard Stikvoort