Oleg A Mukhanov

US Patent:

6653962, Nov 25, 2003

Filed:

Oct 19, 2001

Appl. No.:

09/999864

Inventors:

Deepnarayan Gupta - Hawthorne NY 10532
Saad Sarwana - White Plains NY 10605
Alex Kirichenko - Elmsford NY 10523
Oleg Mukhanov - Putnam Valley NY 10579

International Classification:

H03M 112

US Classification:

341155, 341133, 341164, 341166

Abstract:

A dual function superconducting digitizer circuit which can selectively function either as an analog-to-digital converter (ADC) or as a time-to-digital converter (TDC). Superconducting ADCs and TDCs can provide performance far superior to that obtained using conventional electronics by taking advantage of the intrinsic propertiesâhigh switching speed, quantum accuracy, dispersion-less transmission lines, radiation hardness, and extremely low power dissipationâof superconductivity. Since both ADC and TDC functions are desired in most measurement systems, a dual-function digitizer is not only more attractive from a system integration perspective but is also more marketable.

US Patent:

7280623, Oct 9, 2007

Filed:

Aug 2, 2002

Appl. No.:

10/210882

Inventors:

Deepnarayan Gupta - Hawthorne NY, US
Oleg A. Mukhanov - Putnam Valley NY, US
Alan M. Kadin - Irvington NY, US
Deborah Van Vechten - McLean VA, US

Assignee:

Hypres, Inc. - Elmsford NY
United States of America - Washington DC

International Classification:

H03D 1/00
H04B 1/69

US Classification:

375343, 375130

Abstract:

Digital RF correlation based signal processing arrangements allow for the development of software—controlled radio reception without the need for down-conversion to IF frequencies. Various arrangements are implemented using superconducting RSFQ logic enabling the clock and processing speeds required.

US Patent:

7313199, Dec 25, 2007

Filed:

Feb 3, 2003

Appl. No.:

10/357130

Inventors:

Deepnarayan Gupta - Hawthorne NY, US
Oleg A. Mukhanov - Putnam Valley NY, US

Assignee:

Hypres, Inc. - Elmsford NY

International Classification:

H04L 25/49
H04B 15/00

US Classification:

375297, 375296, 375285, 375219

Abstract:

A system for linearizing the output of a high power amplifier (HPA) designed to transmit an RF modulated signal includes in its transmit section a digital up-converter for processing baseband input signals and generating a desired digital RF waveform, T(s). The desired digital RF waveform T(s) is then fed to a digital predistorter circuit for producing a predistorted digital RF waveform P(s)T(s) which, as modified, may be applied via a high sampling speed high linearity digital to analog converter to the high power amplifier (HPA) to produce an output signal which is a linear function of the baseband input signal. The digital predistorter circuit may be of the adaptive type or of the predictive type. Circuits embodying the invention may include encoding circuitry for converting multi-bit signals to a serial stream of single-bit pulses for enabling simplification in the digital to analog conversion. In accordance with the invention, corrections for non-linearity of the HPA may be made directly on the RF waveform using ultra-high speed superconducting electronics (SCE) and decreasing the time delay between sensing a transmitted signal and generating a correcting (linearizing) signal.

US Patent:

7991013, Aug 2, 2011

Filed:

Dec 28, 2007

Appl. No.:

11/966889

Inventors:

Deepnarayan Gupta - Hawthorne NY, US
Oleg A. Mukhanov - Putnam Valley NY, US

Assignee:

Hypres, Inc. - Elmsford NY

International Classification:

H04L 27/06
H04B 1/06
G06F 1/04
H03K 19/00
H03K 19/195

US Classification:

370481, 370281, 370296, 370480, 370484, 375219, 375316, 375317, 455130, 455133, 455137, 4555501, 4555531

Abstract:

A system and method for receiving radio frequency signals, comprising a plurality of analog signal couplers, for communicating a representation of a radio frequency signal; a respective analog to digital converter for each of said couplers, each having an output presenting a digital representation of the representation and an associated clock; a non-blocking switch matrix, receiving the plurality of outputs and associated clocks, and producing a plurality of regenerated outputs and associated regenerated clocks under selective control of a switch matrix signal; and a plurality of digital radio frequency signal processors, adapted to receive at least one regenerated output from the non-blocking switch matrix and associated regenerated clock.

US Patent:

7991814, Aug 2, 2011

Filed:

Aug 24, 2007

Appl. No.:

11/895478

Inventors:

Timur V. Filippov - Mahopac NY, US
Oleg A. Mukhanov - Putnam Valley NY, US

Assignee:

Hypres, Inc - Elmsford NY

International Classification:

G06F 17/17
G06F 7/38
G06F 7/50

US Classification:

708313, 708443, 708707

Abstract:

The invention includes a novel differentiator cell, a novel resample unit cell, and precision synchronization circuitry to ensure proper timing of the circuits and systems at the anticipated ultra-high speed of operation. The novel differentiator cell includes circuitry for combining a carry input signal, a data bit signal and the output signal of a NOT cell and applying the signals as distinct and separate pulses to the input of a toggle flip-flop (TFF) for producing an asynchronous carry output and a clocked data output. The novel differentiator cells can be interconnected to form a multi-bit differentiator circuit using appropriate delay and synchronization circuitry to compensate for delays in producing the carry output of each cell which is applied to a succeeding cell. The novel resample cell includes a non-destructive reset-set flip-flop (RSN) designed to receive a data bit, at its set input, at a slow clock rate, which data is repeatedly read out of the RSN at a fast clock rate, until the RSN is reset. The novel differentiator and resampler cells can be interconnected, for example, to form the differentiator and up-sampling sections of a digital interpolation filter (DIF).

US Patent:

8179133, May 15, 2012

Filed:

Aug 18, 2009

Appl. No.:

12/543482

Inventors:

Victor K. Kornev - Moscow, RU
Igor I. Soloviev - Moscow, RU
Nikolai V. Klenov - Troitsk, RU
Oleg A. Mukhanov - Putnam Valley NY, US

Assignee:

Hypres, Inc. - Elmsford NY

International Classification:

G01R 33/02

US Classification:

324248, 324225, 505846

Abstract:

A superconducting quantum interference devices (SQUID) comprises a superconducting inductive loop with at least two Josephson junction, whereby a magnetic flux coupled into the inductive loop produces a modulated response up through radio frequencies. Series and parallel arrays of SQUIDs can increase the dynamic range, output, and linearity, while maintaining bandwidth. Several approaches to achieving a linear triangle-wave transfer function are presented, including harmonic superposition of SQUID cells, differential serial arrays with magnetic frustration, and a novel bi-SQUID cell comprised of a nonlinear Josephson inductance shunting the linear coupling inductance. Total harmonic distortion of less than −120 dB can be achieved in optimum cases.

US Patent:

8260143, Sep 4, 2012

Filed:

Mar 12, 2009

Appl. No.:

12/403326

Inventors:

Deepnarayan Gupta - Hawthorne NY, US
Oleg Mukhanov - Putnam Valley NY, US

Assignee:

HYPRES, Inc. - Elmsford NY

International Classification:

H04B 10/00

US Classification:

398115

Abstract:

A transceiver architecture for wireless base stations wherein a broadband radio frequency signal is carried between at least one tower-mounted unit and a ground-based unit via optical fibers, or other non-distortive media, in either digital or analog format. Each tower-mounted unit (for both reception and transmission) has an antenna, analog amplifier and an electro-optical converter. The ground unit has ultrafast data converters and digital frequency translators, as well as signal linearizers, to compensate for nonlinear distortion in the amplifiers and optical links in both directions. In one embodiment of the invention, at least one of the digital data converters, frequency translators, and linearizers includes superconducting elements mounted on a cryocooler.

US Patent:

8260144, Sep 4, 2012

Filed:

Mar 12, 2009

Appl. No.:

12/403329

Inventors:

Deepnarayan Gupta - Hawthorne NY, US
Oleg Mukhanov - Putnam Valley NY, US
Richard E. Hitt - New Fairfield CT, US

Assignee:

Hypres Inc. - Elmsford NY

International Classification:

H04B 10/00

US Classification:

398115

Abstract:

A transceiver architecture for wireless base stations wherein a broadband radio frequency signal is carried between at least one tower-mounted unit and a ground-based unit via optical fibers, or other non-distortive media, in either digital or analog format. Each tower-mounted unit (for both reception and transmission) has an antenna, analog amplifier and an electro-optical converter. The ground unit has ultrafast data converters and digital frequency translators, as well as signal linearizers, to compensate for nonlinear distortion in the amplifiers and optical links in both directions. In one embodiment of the invention, at least one of the digital data converters, frequency translators, and linearizers includes superconducting elements mounted on a cryocooler.