Pierre Dobrovolny

Person

North Riverside, IL, US

People

Patents Grantslast 30 patents

Information Patent Grant
Attenuation control for tuners
- Patent number 7,310,505
- Issue date Dec 18, 2007
- Zenith Electronics Corporation
- Pierre Dobrovolny
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Printed circuit doubly balanced mixer for upconverter
- Patent number 7,072,636
- Issue date Jul 4, 2006
- Zenith Electronics Corporation
- Pierre Dobrovolny
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Printed single balanced downconverter mixer
- Patent number 6,675,005
- Issue date Jan 6, 2004
- Zenith Electronics Corporation
- Pierre Dobrovolny
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
RF A/B switch with substantial isolation
- Patent number 6,650,199
- Issue date Nov 18, 2003
- Zenith Electronics Corporation
- Pierre Dobrovolny
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Low power switchable filter tuner
- Patent number 6,472,957
- Issue date Oct 29, 2002
- Zenith Electronics Corporation
- Pierre Dobrovolny
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Dipole UHF antenna
- Patent number 6,281,857
- Issue date Aug 28, 2001
- Zenith Electronics Corporation
- Pierre Dobrovolny
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Combined UHF and VHF antenna
- Patent number 6,181,292
- Issue date Jan 30, 2001
- Zenith Electronics Corporation
- Pierre Dobrovolny
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Adaptive indoor antenna system
- Patent number 6,150,993
- Issue date Nov 21, 2000
- Zenith Electronics Corporation
- Pierre Dobrovolny
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Digital AGC control for high definition television tuner
- Patent number 6,133,965
- Issue date Oct 17, 2000
- Zenith Electronics Corporation
- Pierre Dobrovolny
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Adjacent channel rejection in double conversion tuner
- Patent number 6,070,061
- Issue date May 30, 2000
- Zenith Electronics Corporation
- Pierre Dobrovolny
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Selective RF circuit with varactor tuned bandpass switched bandpass...
- Patent number 6,035,185
- Issue date Mar 7, 2000
- Zenith Electronics Corporation
- Pierre Dobrovolny
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Oscillator for digital ATV signals having low phase noise
- Patent number 5,923,221
- Issue date Jul 13, 1999
- Zenith Electonics Corporation
- Pierre Dobrovolny
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Printed circuit transformer hybrids for RF mixers
- Patent number 5,917,386
- Issue date Jun 29, 1999
- Zenith Electronics Corporation
- Pierre Dobrovolny
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Frequency compensated PIN diode attenuator
- Patent number 5,834,988
- Issue date Nov 10, 1998
- Zenith Electronics Corporation
- Pierre Dobrovolny
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Selective RF circuit with varactor tuned and switched bandpass filters
- Patent number 5,752,179
- Issue date May 12, 1998
- Zenith Electronics Corporation
- Pierre Dobrovolny
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Bandswitched tuning system having a plurality of local oscillators...
- Patent number 5,420,646
- Issue date May 30, 1995
- Zenith Electronics Corp.
- Pierre Dobrovolny
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Double conversion digital tuning system using separate digital numb...
- Patent number 5,311,318
- Issue date May 10, 1994
- Zenith Electronics Corporation
- Pierre Dobrovolny
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Double-balanced high level wide band RF mixer
- Patent number 5,280,648
- Issue date Jan 18, 1994
- Zenith Electronics Corporation
- Pierre Dobrovolny
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
AGC circuit for double conversion digital television tuner
- Patent number 5,270,824
- Issue date Dec 14, 1993
- Zenith Electronics Corporation
- Pierre Dobrovolny
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
High level wide band RF mixer
- Patent number 5,027,163
- Issue date Jun 25, 1991
- Zenith Electronics Corporation
- Pierre Dobrovolny
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Radio frequency mixer
- Patent number 4,823,400
- Issue date Apr 18, 1989
- Zenith Electronics Corporation
- Pierre Dobrovolny
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Intermediate frequency filter for a DBS receiver
- Patent number 4,621,245
- Issue date Nov 4, 1986
- Zenith Electronics Corporation
- Pierre Dobrovolny
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Switched bandpass filter
- Patent number 4,571,560
- Issue date Feb 18, 1986
- Zenith Electronics Corporation
- Pierre Dobrovolny
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Microwave oscillator and single balanced mixer for satellite televi...
- Patent number 4,523,159
- Issue date Jun 11, 1985
- Zenith Electronics Corporation
- Pierre Dobrovolny
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Lowpass-highpass electronic switch
- Patent number 4,480,338
- Issue date Oct 30, 1984
- Zenith Electronics Corporation
- Pierre Dobrovolny
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Wideband IF amplifier with complementary GaAs FET-bipolar transisto...
- Patent number 4,464,636
- Issue date Aug 7, 1984
- Zenith Electronics Corporation
- Pierre Dobrovolny
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Integrated RF receiver/waveguide
- Patent number 4,461,041
- Issue date Jul 17, 1984
- Zenith Radio Corporation
- Pierre Dobrovolny
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Integrated single balanced mixer/oscillator with slot and hybrid co...
- Patent number 4,461,040
- Issue date Jul 17, 1984
- Zenith Radio Corporation
- Pierre Dobrovolny
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Communications receiver having a switchable filter input stage
- Patent number 4,435,841
- Issue date Mar 6, 1984
- Zenith Radio Corporation
- Pierre Dobrovolny
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Line isolation and interference shielding for a shielded conductor...
- Patent number 4,399,419
- Issue date Aug 16, 1983
- Zenith Radio Corporation
- Pierre Dobrovolny
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Attenuation control for tuners
- Publication number 20050054314
- Publication date Mar 10, 2005
- Pierre Dobrovolny
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
RF A/B switch with substantial isolation
- Publication number 20030071698
- Publication date Apr 17, 2003
- Pierre Dobrovolny
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Printed single balanced downconverter mixer
- Publication number 20020022466
- Publication date Feb 21, 2002
- Pierre Dobrovolny
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Printed circuit doubly balanced mixer for upconverter
- Publication number 20010036818
- Publication date Nov 1, 2001
- Pierre Dobrovolny
- H03 - BASIC ELECTRONIC CIRCUITRY

Pierre Dobrovolny

Person

Patents Grantslast 30 patents

Attenuation control for tuners

Printed circuit doubly balanced mixer for upconverter

Printed single balanced downconverter mixer

RF A/B switch with substantial isolation

Low power switchable filter tuner

Dipole UHF antenna

Combined UHF and VHF antenna

Adaptive indoor antenna system

Digital AGC control for high definition television tuner

Adjacent channel rejection in double conversion tuner

Selective RF circuit with varactor tuned bandpass switched bandpass...

Oscillator for digital ATV signals having low phase noise

Printed circuit transformer hybrids for RF mixers

Frequency compensated PIN diode attenuator

Selective RF circuit with varactor tuned and switched bandpass filters

Bandswitched tuning system having a plurality of local oscillators...

Double conversion digital tuning system using separate digital numb...

Double-balanced high level wide band RF mixer

AGC circuit for double conversion digital television tuner

High level wide band RF mixer

Radio frequency mixer

Intermediate frequency filter for a DBS receiver

Switched bandpass filter

Microwave oscillator and single balanced mixer for satellite televi...

Lowpass-highpass electronic switch

Wideband IF amplifier with complementary GaAs FET-bipolar transisto...

Integrated RF receiver/waveguide

Integrated single balanced mixer/oscillator with slot and hybrid co...

Communications receiver having a switchable filter input stage

Line isolation and interference shielding for a shielded conductor...

Patents Applicationslast 30 patents

Attenuation control for tuners

RF A/B switch with substantial isolation

Printed single balanced downconverter mixer

Printed circuit doubly balanced mixer for upconverter