Patents by Inventor Dmitry Tatarnikov
Dmitry Tatarnikov 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).
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Patent number: 9806410Abstract: Multipath reception by an antenna is reduced by mounting the antenna on a semi-transparent ground plane that has a controlled distribution of layer impedance over a central region and a peripheral region. The central region includes a continuous conductive segment on which the ground element of the antenna is disposed. The distribution of the layer impedance over the peripheral region is configured by multiple conductive segments electromagnetically coupled by lumped circuit elements. A semi-transparent ground plane can be fabricated by depositing a metal film on a dielectric substrate and etching grooves into the metal film to form a desired pattern of conductive segments. Lumped circuit elements can be fabricated as discrete devices, surface mount devices, and integrated circuit devices. Various semi-transparent ground planes can be configured for linearly-polarized and circularly-polarized radiation.Type: GrantFiled: January 9, 2014Date of Patent: October 31, 2017Assignee: Topcon Positioning Systems, Inc.Inventors: Dmitry Tatarnikov, Kirill Klionovski
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Patent number: 9184504Abstract: A dual-frequency patch antenna includes a ground plane, an inside radiator, and an outside radiator. The inside radiator is configured as a region with a periphery, along which is a series of first protrusions separated by first grooves. The outside radiator is configured as a ring with an outer periphery and an inner periphery, along which is a series of second protrusions separated by second grooves. A set of conducting elements electrically connect the series of second protrusions with the ground plane. The inside radiator and the outside radiator can be fabricated on a dielectric substrate separated from the ground plane by a dielectric solid or air. The inside radiator and the outside radiator can be disposed on the same surface or on different surfaces of the dielectric substrate, with specific geometries of the first protrusions and first grooves relative to the second protrusions and second grooves.Type: GrantFiled: April 17, 2012Date of Patent: November 10, 2015Assignee: Topcon Positioning Systems, Inc.Inventors: Dmitry Tatarnikov, Anton Stepanenko, Andrey Astakhov
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Patent number: 9172144Abstract: Disclosed is a micropatch antenna comprising a radiating element and a ground plane separated by an air gap. Small size, light weight, wide bandwidth, and wide directional pattern are achieved without the introduction of a high-permittivity dielectric substrate. Capacitive elements are configured along the perimeter of at least one of the radiating element and ground plane. Capacitive elements may comprise extended continuous structures or a series of localized structures. The geometry of the radiating element, ground plane, and capacitive elements may be varied to suit specific applications, such as linearly-polarized or circularly-polarized electromagnetic radiation.Type: GrantFiled: December 13, 2012Date of Patent: October 27, 2015Assignee: Topcon GPS, LLCInventors: Dmitry Tatarnikov, Andrey Astakhov, Anton Stepanenko, Pavel Shamatulsky
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Patent number: 9048546Abstract: Multipath reception by an antenna is reduced by mounting the antenna on a semi-transparent ground plane that has a controlled distribution of layer impedance over a central region and a peripheral region. The central region includes a continuous conductive segment on which the ground element of the antenna is disposed. The distribution of the layer impedance over the peripheral region is configured by multiple conductive segments electromagnetically coupled by lumped circuit elements. A semi-transparent ground plane can be fabricated by depositing a metal film on a dielectric substrate and etching grooves into the metal film to form a desired pattern of conductive segments. Lumped circuit elements can be fabricated as discrete devices, surface mount devices, and integrated circuit devices. Various semi-transparent ground planes can be configured for linearly-polarized and circularly-polarized radiation.Type: GrantFiled: January 18, 2011Date of Patent: June 2, 2015Assignee: Topcon Positioning Systems, Inc.Inventors: Dmitry Tatarnikov, Kirill Klionovski
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Patent number: 8842045Abstract: A patch antenna system with improved multipath resistance includes a top antenna assembly and a bottom antenna assembly. Each antenna assembly includes a radiator patch and a ground plane separated by a dielectric medium. The radiator patch on the top antenna assembly is excited by an exciter and an excitation circuit. The bottom antenna assembly is electromagnetically coupled to the top antenna assembly. The resonant frequency of the bottom antenna assembly is approximately equal to the resonant frequency of the top antenna assembly. Electromagnetic fields induced in the bottom antenna assembly are in opposite phase to the electromagnetic fields excited in the top antenna assembly. Amplitudes of electromagnetic fields induced in the bottom antenna assembly are subtracted from amplitudes of electromagnetic fields excited in the top antenna assembly, and multipath signals are suppressed. Single band and dual band antenna systems suitable for global navigation satellite systems can be implemented.Type: GrantFiled: November 12, 2010Date of Patent: September 23, 2014Assignee: Topcon Positioning Systems, Inc.Inventors: Dmitry Tatarnikov, Pavel Shamatulsky, Andrey Astakhov
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Patent number: 8723731Abstract: Disclosed is a circularly-polarized antenna comprising a flat conducting ground plane, a radiator, and an excitation system disposed between the radiator and the ground plane. The radiator comprises a plurality of conducting segments separated from each other by a first dielectric medium and separated from the ground plane by a second dielectric medium. The plurality of conducting segments are symmetrically disposed about an antenna axis of symmetry orthogonal to the ground plane. The excitation system comprises a flat conducting exciter patch and four excitation sources with phase differences of 0, 90, 180, and 270 degrees. The excitation sources are generated on two orthogonal printed circuit boards.Type: GrantFiled: September 21, 2009Date of Patent: May 13, 2014Assignee: Topcon GPS, LLCInventors: Dmitry Tatarnikov, Anton Stepanenko, Andrey Astakhov, Vladimir Philippov
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Publication number: 20140125544Abstract: Multipath reception by an antenna is reduced by mounting the antenna on a semi-transparent ground plane that has a controlled distribution of layer impedance over a central region and a peripheral region. The central region includes a continuous conductive segment on which the ground element of the antenna is disposed. The distribution of the layer impedance over the peripheral region is configured by multiple conductive segments electromagnetically coupled by lumped circuit elements. A semi-transparent ground plane can be fabricated by depositing a metal film on a dielectric substrate and etching grooves into the metal film to form a desired pattern of conductive segments. Lumped circuit elements can be fabricated as discrete devices, surface mount devices, and integrated circuit devices. Various semi-transparent ground planes can be configured for linearly-polarized and circularly-polarized radiation.Type: ApplicationFiled: January 9, 2014Publication date: May 8, 2014Applicant: Topcon Positioning Systems, Inc.Inventors: Dmitry Tatarnikov, Kirill Klionovski
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Publication number: 20140009349Abstract: Disclosed is a micropatch antenna comprising a radiating element and a ground plane separated by an air gap. Small size, light weight, wide bandwidth, and wide directional pattern are achieved without the introduction of a high-permittivity dielectric substrate. Capacitive elements are configured along the perimeter of at least one of the radiating element and ground plane. Capacitive elements may comprise extended continuous structures or a series of localized structures. The geometry of the radiating element, ground plane, and capacitive elements may be varied to suit specific applications, such as linearly-polarized or circularly-polarized electromagnetic radiation.Type: ApplicationFiled: December 13, 2012Publication date: January 9, 2014Applicant: TOPCON GPS, LLCInventors: Dmitry Tatarnikov, Andrey Astakhov, Anton Stepanenko, Pavel Shamatulsky
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Patent number: 8446322Abstract: Disclosed is a micropatch antenna comprising a radiating element and a ground plane separated by an air gap. Small size, light weight, wide bandwidth, and wide directional pattern are achieved without the introduction of a high-permittivity dielectric substrate. Capacitive elements are configured along the perimeter of at least one of the radiating element and ground plane. Capacitive elements may comprise extended continuous structures or a series of localized structures. The geometry of the radiating element, ground plane, and capacitive elements may be varied to suit specific applications, such as linearly-polarized or circularly-polarized electromagnetic radiation.Type: GrantFiled: November 21, 2008Date of Patent: May 21, 2013Assignee: Topcon GPS, LLCInventors: Dmitry Tatarnikov, Andrey Astakhov, Anton Stepanenko, Pavel Shamatulsky
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Patent number: 8441409Abstract: A ground plane for reducing multipath reception comprises a convex conducting surface and an array of conducting elements disposed on at least a portion of the convex conducting surface. Embodiments of the convex conducting surface include a portion of a sphere and a sphere. Each conducting element comprises an elongated body structure having a transverse dimension and a length, wherein the transverse dimension is substantially less than the length. The cross-section of the elongated body structure can have various user-specified shapes. Each conducting element can further comprise a tip structure. The azimuth spacings, lengths, and surface densities of the conducting elements can be functions of meridian angle. An antenna can be mounted directly on the conducting convex surface or on a conducting or dielectric support structure mounted on the conducting convex surface. System components, such as a navigation receiver, can be mounted inside the conducting convex surface.Type: GrantFiled: June 9, 2010Date of Patent: May 14, 2013Assignee: Topcon GPS, LLCInventors: Dmitry Tatarnikov, Andrey Astakhov, Anton Stepanenko
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Publication number: 20120268347Abstract: A dual-frequency patch antenna includes a ground plane, an inside radiator, and an outside radiator. The inside radiator is configured as a region with a periphery, along which is a series of first protrusions separated by first grooves. The outside radiator is configured as a ring with an outer periphery and an inner periphery, along which is a series of second protrusions separated by second grooves. A set of conducting elements electrically connect the series of second protrusions with the ground plane. The inside radiator and the outside radiator can be fabricated on a dielectric substrate separated from the ground plane by a dielectric solid or air. The inside radiator and the outside radiator can be disposed on the same surface or on different surfaces of the dielectric substrate, with specific geometries of the first protrusions and first grooves relative to the second protrusions and second grooves.Type: ApplicationFiled: April 17, 2012Publication date: October 25, 2012Applicant: TOPCON POSITIONING SYSTEMS, INC.Inventors: Dmitry Tatarnikov, Anton Stepanenko, Andrey Astakhov
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Publication number: 20120154241Abstract: Multipath reception by an antenna is reduced by mounting the antenna on a semi-transparent ground plane that has a controlled distribution of layer impedance over a central region and a peripheral region. The central region includes a continuous conductive segment on which the ground element of the antenna is disposed. The distribution of the layer impedance over the peripheral region is configured by multiple conductive segments electromagnetically coupled by lumped circuit elements. A semi-transparent ground plane can be fabricated by depositing a metal film on a dielectric substrate and etching grooves into the metal film to form a desired pattern of conductive segments. Lumped circuit elements can be fabricated as discrete devices, surface mount devices, and integrated circuit devices. Various semi-transparent ground planes can be configured for linearly-polarized and circularly-polarized radiation.Type: ApplicationFiled: January 18, 2011Publication date: June 21, 2012Applicant: TOPCON POSITIONING SYSTEMS, INC.Inventors: Dmitry Tatarnikov, Kirill Klionovski
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Patent number: 8174450Abstract: A micropatch antenna system with simultaneous high bandwidth and low sensitivity to multipath radiation is achieved by positioning a radiating element within a cavity in a ground plane. Bandwidth and sensitivity to multipath radiation may be varied by varying the height of the radiating element above the bottom of the cavity and above the top of the ground plane. The electromagnetic and physical characteristics of the antenna system may be further controlled by introducing dielectric solids or wave-slowing structures between the bottom of the cavity and the radiating element. A dual-band micropatch antenna system with simultaneous high bandwidth and low sensitivity to multipath radiation may be similarly configured by stacking a second radiating element on top of the first radiating element.Type: GrantFiled: April 6, 2009Date of Patent: May 8, 2012Assignee: Topcon GPS, LLCInventors: Dmitry Tatarnikov, Andrey Astakhov, Sergey Emelianov, Anton Stepanenko
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Publication number: 20110115676Abstract: A patch antenna system with improved multipath resistance includes a top antenna assembly and a bottom antenna assembly. Each antenna assembly includes a radiator patch and a ground plane separated by a dielectric medium. The radiator patch on the top antenna assembly is excited by an exciter and an excitation circuit. The bottom antenna assembly is electromagnetically coupled to the top antenna assembly. The resonant frequency of the bottom antenna assembly is approximately equal to the resonant frequency of the top antenna assembly. Electromagnetic fields induced in the bottom antenna assembly are in opposite phase to the electromagnetic fields excited in the top antenna assembly. Amplitudes of electromagnetic fields induced in the bottom antenna assembly are subtracted from amplitudes of electromagnetic fields excited in the top antenna assembly, and multipath signals are suppressed. Single band and dual band antenna systems suitable for global navigation satellite systems can be implemented.Type: ApplicationFiled: November 12, 2010Publication date: May 19, 2011Applicant: TOPCON POSITIONING SYSTEMS, INC.Inventors: Dmitry Tatarnikov, Pavel Shamatulsky, Andrey Astakhov
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Publication number: 20110012808Abstract: A ground plane for reducing multipath reception comprises a convex conducting surface and an array of conducting elements disposed on at least a portion of the convex conducting surface. Embodiments of the convex conducting surface include a portion of a sphere and a sphere. Each conducting element comprises an elongated body structure having a transverse dimension and a length, wherein the transverse dimension is substantially less than the length. The cross-section of the elongated body structure can have various user-specified shapes. Each conducting element can further comprise a tip structure. The azimuth spacings, lengths, and surface densities of the conducting elements can be functions of meridian angle. An antenna can be mounted directly on the conducting convex surface or on a conducting or dielectric support structure mounted on the conducting convex surface. System components, such as a navigation receiver, can be mounted inside the conducting convex surface.Type: ApplicationFiled: June 9, 2010Publication date: January 20, 2011Applicant: Topcon GPS, LLCInventors: Dmitry Tatarnikov, Andrey Astakhov, Anton Stepanenko
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Publication number: 20100073239Abstract: Disclosed is a circularly-polarized antenna comprising a flat conducting ground plane, a radiator, and an excitation system disposed between the radiator and the ground plane. The radiator comprises a plurality of conducting segments separated from each other by a first dielectric medium and separated from the ground plane by a second dielectric medium. The plurality of conducting segments are symmetrically disposed about an antenna axis of symmetry orthogonal to the ground plane. The excitation system comprises a flat conducting exciter patch and four excitation sources with phase differences of 0, 90, 180, and 270 degrees. The excitation sources are generated on two orthogonal printed circuit boards.Type: ApplicationFiled: September 21, 2009Publication date: March 25, 2010Applicant: TOPCON GPS, LLCInventors: Dmitry Tatarnikov, Anton Stepanenko, Andrey Astakhov, Vladimir Philippov
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Publication number: 20090273522Abstract: A micropatch antenna system with simultaneous high bandwidth and low sensitivity to multipath radiation is achieved by positioning a radiating element within a cavity in a ground plane. Bandwidth and sensitivity to multipath radiation may be varied by varying the height of the radiating element above the bottom of the cavity and above the top of the ground plane. The electromagnetic and physical characteristics of the antenna system may be further controlled by introducing dielectric solids or wave-slowing structures between the bottom of the cavity and the radiating element. A dual-band micropatch antenna system with simultaneous high bandwidth and low sensitivity to multipath radiation may be similarly configured by stacking a second radiating element on top of the first radiating element.Type: ApplicationFiled: April 6, 2009Publication date: November 5, 2009Applicant: Topcon GPS, LLCInventors: Dmitry Tatarnikov, Andrey Astakhov, Sergey Emelianov, Anton Stepanenko
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Publication number: 20090140930Abstract: Disclosed is a micropatch antenna comprising a radiating element and a ground plane separated by an air gap. Small size, light weight, wide bandwidth, and wide directional pattern are achieved without the introduction of a high-permittivity dielectric substrate. Capacitive elements are configured along the perimeter of at least one of the radiating element and ground plane. Capacitive elements may comprise extended continuous structures or a series of localized structures. The geometry of the radiating element, ground plane, and capacitive elements may be varied to suit specific applications, such as linearly-polarized or circularly-polarized electromagnetic radiation.Type: ApplicationFiled: November 21, 2008Publication date: June 4, 2009Applicant: Topcon GPS, LLCInventors: Dmitry Tatarnikov, Andrey Astakhov, Anton Stepanenko, Pavel Shamatulsky
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Publication number: 20070205945Abstract: A patch antenna having a plurality of structures, referred to herein as comb structures, is disclosed that results in an antenna having a reduced overall patch size and weight as well as a broader the angular response pattern of the antenna. In a first embodiment, comb structures are attached to one of the surface of the patch or the surface of the ground plane. In a second embodiment, the comb structures are attached to both the patch and the ground plane in a manner such that the structures interleave with each other. The structures may be pins or ribs that are electrically connected to the ground plane and/or the patch, or may be any other suitable configuration depending upon the polarization of the signal to be transmitted or received.Type: ApplicationFiled: November 16, 2005Publication date: September 6, 2007Inventors: Dmitry Tatarnikov, Andrey Astakhov, Pavel Shamatulsky, Igor Soutiaguine, Anton Stepanenko
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Patent number: 6836247Abstract: Compact antenna systems for reducing the reception of multipath signals are disclosed. An exemplary antenna system comprises a ground plane, a receiving antenna disposed above the ground plane and providing an output signal of the antenna system, and a passive antenna disposed below the ground plane.Type: GrantFiled: September 19, 2002Date of Patent: December 28, 2004Assignee: Topcon GPS LLCInventors: Igor Soutiaguine, Dmitry Tatarnikov, Vladimir Philippov, Anton Stepanenko, Andrey Astahov