Patents by Inventor John A. Svigelj
John A. Svigelj 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: 7528788Abstract: A high impedance surface (300) has a printed circuit board (302) with a first surface (314) and a second surface (316), and a continuous electrically conductive plate (319) disposed on the second surface (316) of the printed circuit board (302). A plurality of electrically conductive plates (318) is disposed on the first surface (314) of the printed circuit board (302), while a plurality of elements are also provided. Each element comprises at least one of (1) at least one multi-layer inductor (330, 331) electrically coupled between at least two of the electrically conductive plates (318) and embedded within the printed circuit board (302), and (2) at least one capacitor (320) electrically coupled between at least two of the electrically conductive plates (318).Type: GrantFiled: July 17, 2008Date of Patent: May 5, 2009Assignee: Motorola, Inc.Inventors: Gregory J. Dunn, Robert T. Croswell, George H. Kumpf, John A. Svigelj
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Patent number: 7518465Abstract: A tunable high impedance surface device (100) includes a conductive ground plane (105) and a plurality of conductive elements (110-114) electrically connected to the conductive ground plane (105). The device (100) also includes a plurality of capacitive elements (120-124) operable to vary a predetermined electromagnetic characteristic of the apparatus and standoffs (130, 132) between the plurality of capacitive elements (120-124) and the plurality of conductive elements (110-114). In one form, laser-drilled and electrically conductive micro-vias (136, 138) extend through the standoffs (130, 132) thereby electrically connecting the plurality of capacitive elements (120-124) to a data bus (140). The capacitive elements (120-124) may be integral with a circuit board (144) that supports the plurality conductive elements (110-114).Type: GrantFiled: December 26, 2006Date of Patent: April 14, 2009Assignee: Motorola, Inc.Inventors: Jovica Savic, Gregory J. Dunn, John A. Svigelj
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Patent number: 7498987Abstract: A small volume antenna (100) has the form of a polygonal (e.g., square) board with multiple antenna elements (104, 110) located at vertices (114, 116) (e.g., opposite vertices). The antenna elements (104, 110) include two segments (118, 120, 124, 126) that meet at corners (122, 128) that are located at the vertices (114, 116). Peripheral portions (134, 136, 138, 140) of a ground plane (132) that underlie the segments (118, 120, 124, 126) of the antenna elements are deleted, and slots (154, 162) that have two joined segments (156, 158, 164, 166) that parallel the segments (118, 120, 124, 126) of the antenna elements (104, 110) are formed in the antenna elements. The antenna elements (104, 110) are selectively loaded by switched impedance (e.g., capacitance) networks (172, 176, 178, 180, 182, 186, 190, 192). The antenna (100) is able to support operation in at least two broad operating bands.Type: GrantFiled: December 20, 2005Date of Patent: March 3, 2009Assignee: Motorola, Inc.Inventors: John A. Svigelj, Giorgi G. Bit-Babik, Carlo Dinallo
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Patent number: 7477201Abstract: An antenna system includes a ground plane including a first corner and a second corner that are positioned along a first common edge. A first antenna element is disposed at the first corner of the ground plane and includes a first slot. A second antenna element is disposed at the second corner of the ground plane and includes a second slot. The first antenna element and the second antenna element are fed with an electromagnetic signal and the electromagnetic signal at the first antenna element is approximately 90 degrees shifted from the signal at the second antenna element. The first antenna element and the second antenna element form an antenna structure, and the antenna structure transmits circularly polarized radiation.Type: GrantFiled: August 30, 2007Date of Patent: January 13, 2009Assignee: Motorola, Inc.Inventors: Giorgi Bit-Babik, Carlo Di Nallo, John A. Svigelj
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Publication number: 20080272982Abstract: A high impedance surface (300) has a printed circuit board (302) with a first surface (314) and a second surface (316), and a continuous electrically conductive plate (319) disposed on the second surface (316) of the printed circuit board (302). A plurality of electrically conductive plates (318) is disposed on the first surface (314) of the printed circuit board (302), while a plurality of elements are also provided. Each element comprises at least one of (1) at least one multi-layer inductor (330, 331) electrically coupled between at least two of the electrically conductive plates (318) and embedded within the printed circuit board (302), and (2) at least one capacitor (320) electrically coupled between at least two of the electrically conductive plates (318).Type: ApplicationFiled: July 17, 2008Publication date: November 6, 2008Applicant: MOTOROLA, INC.Inventors: Gregory J. Dunn, Robert T. Croswell, George H. Kumpf, John A. Svigelj
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Patent number: 7423608Abstract: A high impedance surface (300) has a printed circuit board (302) with a first surface (314) and a second surface (316), and a continuous electrically conductive plate (319) disposed on the second surface (316) of the printed circuit board (302). A plurality of electrically conductive plates (318) is disposed on the first surface (314) of the printed circuit board (302), while a plurality of elements are also provided. Each element comprises at least one of (1) at least one multi-layer inductor (330, 331) electrically coupled between at least two of the electrically conductive plates (318) and embedded within the printed circuit board (302), and (2) at least one capacitor (320) electrically coupled between at least two of the electrically conductive plates (318).Type: GrantFiled: December 20, 2005Date of Patent: September 9, 2008Assignee: Motorola, Inc.Inventors: Gregory J. Dunn, Robert T. Croswell, George H. Kumpf, John A. Svigelj
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Publication number: 20080160851Abstract: A textile may include conductive matter and a high impedance surface defined at least in part by the conductive matter.Type: ApplicationFiled: December 27, 2006Publication date: July 3, 2008Applicant: Motorola, Inc.Inventors: Gregory J. Dunn, Remy J. Chelini, Howard W. Davis, Jeffrey M. Petsinger, John A. Svigelj
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Publication number: 20080150657Abstract: A tunable high impedance surface device (100) includes a conductive ground plane (105) and a plurality of conductive elements (110-114) electrically connected to the conductive ground plane (105). The device (100) also includes a plurality of capacitive elements (120-124) operable to vary a predetermined electromagnetic characteristic of the apparatus and standoffs (130, 132) between the plurality of capacitive elements (120-124) and the plurality of conductive elements (110-114). In one form, laser-drilled and electrically conductive micro-vias (136, 138) extend through the standoffs (130, 132) thereby electrically connecting the plurality of capacitive elements (120-124) to a data bus (140). The capacitive elements (120-124) may be integral with a circuit board (144) that supports the plurality conductive elements (110-114).Type: ApplicationFiled: December 26, 2006Publication date: June 26, 2008Applicant: Motorola, Inc.Inventors: Jovica Savic, Gregory J. Dunn, John A. Svigelj
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Patent number: 7337528Abstract: A textured dielectric patch antenna is fabricated by applying a first mask pattern (310, 510, 610, 710, 915, 1015, 1210) to a first side of a solid panel made of a first material that is a ceramic dielectric and then sandblasting the solid panel through the first mask pattern from the first side to at least partially generate a shaped cavity (315, 920, 1040). The shaped cavity of the solid panel may be filled with a second material (330, 740). The first and second materials have substantially differing dielectric constants. The first side and second side of the solid panel are metallized (325), forming a patch antenna. The shaped cavities can be made more complex by using additional masking and/or sandblasting steps.Type: GrantFiled: December 23, 2004Date of Patent: March 4, 2008Assignee: Motorola, Inc.Inventors: Gregory J. Dunn, Jovica Savic, John A. Svigelj, Nadia Yala
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Publication number: 20070139294Abstract: A high impedance surface (300) has a printed circuit board (302) with a first surface (314) and a second surface (316), and a continuous electrically conductive plate (319) disposed on the second surface (316) of the printed circuit board (302). A plurality of electrically conductive plates (318) is disposed on the first surface (314) of the printed circuit board (302), while a plurality of elements are also provided. Each element comprises at least one of (1) at least one multi-layer inductor (330, 331) electrically coupled between at least two of the electrically conductive plates (318) and embedded within the printed circuit board (302), and (2) at least one capacitor (320) electrically coupled between at least two of the electrically conductive plates (318).Type: ApplicationFiled: December 20, 2005Publication date: June 21, 2007Inventors: Gregory Dunn, Robert Croswell, George Kumpf, John Svigelj
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Publication number: 20070139276Abstract: A small volume antenna (100) has the form of a polygonal (e.g., square) board with multiple antenna elements (104, 110) located at vertices (114, 116) (e.g., opposite vertices). The antenna elements (104, 110) include two segments (118, 120, 124, 126) that meet at corners (122, 128) that are located at the vertices (114, 116). Peripheral portions (134, 136, 138, 140) of a ground plane (132) that underlie the segments (118, 120, 124, 126) of the antenna elements are deleted, and slots (154, 162) that have two joined segments (156, 158, 164, 166) that parallel the segments (118, 120, 124, 126) of the antenna elements (104, 110) are formed in the antenna elements. The antenna elements (104, 110) are selectively loaded by switched impedance (e.g., capacitance) networks (172, 176, 178, 180, 182, 186, 190, 192). The antenna (100) is able to support operation in at least two broad operating bands.Type: ApplicationFiled: December 20, 2005Publication date: June 21, 2007Inventors: John Svigelj, Giorgi Bit-Babik, Carlo Dinallo
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Patent number: 7123198Abstract: An antenna (100) comprises an input port (109, 213) for feeding an electrical signal, a radiating element (220) coupled to the input port that radiates energy of the electrical signal, a second port (110, 211) coupled to the radiating element, a ground structure (214) coupled to the radiating element and second port; and a negative slope reactance circuit (120) characterized by a negative slope of reactance versus frequency, coupled to the second port. The antenna has a wideband frequency range relative to a natural bandwidth of the antenna.Type: GrantFiled: December 22, 2004Date of Patent: October 17, 2006Assignee: Motorola, Inc.Inventors: John A. Svigelj, Giorgi G. Bit-Babik, Carlo Di Nallo, Antonio Faraone
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Publication number: 20060137173Abstract: A textured dielectric panel (305, 520, 625, 745, 925, 1035, 1205) is fabricated by applying a first mask pattern (310, 510, 610, 710, 915, 1015, 1210) to a first side of a solid panel made of a first material that is a ceramic dielectric and then sandblasting the solid panel through the first mask pattern from the first side to at least partially generate a shaped cavity (315, 920, 1040). The shaped cavity of the solid panel may be filled with a-second material (330, 740). The first and second materials have substantially differing dielectric constants. The first side and second side of the solid panel may be metallized (325), forming a patch antenna. The shaped cavities can be made more complex by using additional masking and/or sandblasting steps.Type: ApplicationFiled: December 23, 2004Publication date: June 29, 2006Inventors: Gregory Dunn, Jovica Savic, John Svigelj, Nadia Yala
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Publication number: 20050280587Abstract: An antenna (100) comprises an input port (109, 213) for feeding an electrical signal, a radiating element (220) coupled to the input port that radiates energy of the electrical signal, a second port (110, 211) coupled to the radiating element, a ground structure (214) coupled to the radiating element and second port; and a negative slope reactance circuit (120) characterized by a negative slope of reactance versus frequency, coupled to the second port. The antenna has a wideband frequency range relative to a natural bandwidth of the antenna.Type: ApplicationFiled: December 22, 2004Publication date: December 22, 2005Inventors: John Svigelj, Giorgi Bit-Babik, Carlo Dinallo, Antonio Faraone
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Patent number: 5923296Abstract: A dual, preferably orthogonally polarized microstrip patch antenna which includes a layer of electrically insulating material in the form of a printed circuit board. First and second sets of electrically conductive patches, preferably of copper, are disposed on one surface of the electrically insulating material, the first set adapted for transmission and/or reception of electromagnetic radiations polarized in a first direction and the second set adapted for transmission and/or reception of electromagnetic radiations polarized in a second direction. Patches of the first set are interlaced with patches of the second set.Type: GrantFiled: August 22, 1997Date of Patent: July 13, 1999Assignee: Raytheon CompanyInventors: Shashi M. Sanzgiri, Paul C. Gilliland, William P. Harokopus, John Svigelj
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Patent number: 4166058Abstract: A color sensitive primer comprising 100 parts of an ethylenically unsaturated elastomer; 300 to 800 parts of a phenolic resin, A or B stage; 0 to 100 parts inorganic filler; 10 to 30 parts epoxy resin; about 0.5 to 10 parts heat sensitive dye; and about 0.5 to 3 parts sulfur.Type: GrantFiled: August 11, 1978Date of Patent: August 28, 1979Assignee: The Goodyear Tire & Rubber CompanyInventors: John A. Svigelj, Thomas G. Rabito