Patents by Inventor Viatcheslav Souetinov

Viatcheslav Souetinov 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).

  • Publication number: 20050231296
    Abstract: A variable capacitor modulator for use in a voltage controlled oscillator, includes a differential varactor block, coupling capacitors for connecting nodes of the varactor block to a tank circuit, and an element connected between the respective nodes and ground to trim the gain of the variable capacitor modulator.
    Type: Application
    Filed: February 10, 2005
    Publication date: October 20, 2005
    Applicant: Zarlink Semiconductor AB
    Inventors: Viatcheslav Souetinov, Alexander Krasin, Alexander Koulakov
  • Patent number: 5945880
    Abstract: An amplifier, suitable for radio frequency applications, has good noise properties because of a special transistor configuration. A pair of transistors is connected in a cascode configuration, to overcome the Miller effect. The transistors have their bases driven by a common current source. The main current paths from ground to each of the output terminals are essentially noise-free. One of the transistors, acting as a transconductance amplifier, does introduce some noise though this is minimized by the use of an inductor. A third transistor forms a current source for the current path to one of the output terminals. A differential output is achieved at the output terminals because the pair of transistors has complementary outputs. In another embodiment, a capacitor is connected across the collector and base electrodes of one of the transistors to introduce a further stage of gain.
    Type: Grant
    Filed: January 7, 1998
    Date of Patent: August 31, 1999
    Assignee: Mitel Semiconductor Limited
    Inventor: Viatcheslav Souetinov