Patents by Inventor Venkatesh Arunachalam

Venkatesh Arunachalam 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).

  • Patent number: 7839212
    Abstract: A two stage fully differential amplifier has been designed which works, in tandem with a TX-FIR, as a linear equalizer at low frequencies, not covered by the TX-FIR, and also acts as a linear amplifier at higher frequencies which are equalized by the TX-FIR. The amplifier as a frequency response which does not attenuate signals frequencies less than one twentieth of baud rate, creates gain peaking ion the region between one twentieth and one tenth of baud rate and maintains flat peak gain up to half of baud rate. Different aspects of the frequency response curve (such as dc gain, max gain and zero frequency) are completely programmable. Also, the differential amplifier has been designed from low power and process, voltage and temperature insensitive frequency response.
    Type: Grant
    Filed: December 4, 2008
    Date of Patent: November 23, 2010
    Assignee: Oracle America, Inc.
    Inventors: Dawei Huang, Arif Amin, Waseem Ahmad, Rajesh Kumar, Venkatesh Arunachalam
  • Publication number: 20100141340
    Abstract: A two stage fully differential amplifier has been designed which works, in tandem with a TX-FIR, as a linear equalizer at low frequencies, not covered by the TX-FIR, and also acts as a linear amplifier at higher frequencies which are equalized by the TX-FIR. The amplifier as a frequency response which does not attenuate signals frequencies less than one twentieth of baud rate, creates gain peaking ion the region between one twentieth and one tenth of baud rate and maintains flat peak gain up to half of baud rate. Different aspects of the frequency response curve (such as dc gain, max gain and zero frequency) are completely programmable. Also, the differential amplifier has been designed from low power and process, voltage and temperature insensitive frequency response.
    Type: Application
    Filed: December 4, 2008
    Publication date: June 10, 2010
    Applicant: Sun Microsystems, Inc.
    Inventors: Dawei Huang, Arif Amin, Waseem Ahmad, Rajesh Kumar, Venkatesh Arunachalam