Patents by Inventor Cheng-Geng Jan
Cheng-Geng Jan 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: 7659861Abstract: The invention discloses a dual frequency feed assembly for receiving signals of both a first band and a second band lower than the first band, or transmitting signals of one of the first band and the second band while receiving signals of the other band. The dual frequency feed assembly includes an orthogonal-mode transducer, which includes: a core unit having an inner waveguide, an outer waveguide with a diameter larger than that of the inner waveguide and the two waveguides being concentric, a first band output/input port connected to the inner waveguide, and a second band output/input port; and two or four detachable branch waveguides connected to the core unit. An O-ring is provided at each connection between the core unit and the branch waveguides. The dual frequency feed assembly further comprises a first band polarizer made of a metal septum and/or a second band polarizer made of dielectric slabs, when receiving circularly polarized signals.Type: GrantFiled: January 14, 2008Date of Patent: February 9, 2010Assignees: Wistron NeWeb Corp., Cheng-Geng JanInventor: Cheng-Geng Jan
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Publication number: 20090179809Abstract: The invention discloses a dual frequency feed assembly for receiving signals of both a first band and a second band lower than the first band, or transmitting signals of one of the first band and the second band while receiving signals of the other band. The dual frequency feed assembly includes an orthogonal-mode transducer, which includes: a core unit having an inner waveguide, an outer waveguide with a diameter larger than that of the inner waveguide and the two waveguides being concentric, a first band output/input port connected to the inner waveguide, and a second band output/input port; and two or four detachable branch waveguides connected to the core unit. An O-ring is provided at each connection between the core unit and the branch waveguides. The dual frequency feed assembly further comprises a first band polarizer made of a metal septum and/or a second band polarizer made of dielectric slabs, when receiving circularly polarized signals.Type: ApplicationFiled: January 14, 2008Publication date: July 16, 2009Inventor: Cheng-Geng Jan
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Publication number: 20090066444Abstract: A frequency down converter. A plate body of the frequency down converter includes a main surface. A first wave guide includes a first section and a second section connected to the first section. The first section is connected to the main surface and extends parallel thereto. The second section extends perpendicular to the main surface. A second wave guide includes a third section and a fourth section connected to the third section. The third section is connected to the main surface and extends parallel thereto. The fourth section extends perpendicular to the main surface.Type: ApplicationFiled: November 18, 2008Publication date: March 12, 2009Applicant: WISTRON NEWEB CORP.Inventors: Cheng Geng Jan, Chieh Sheng Hsu, San Yi Kuo, Tzyy Shinn Huang
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Patent number: 7468707Abstract: A frequency down converter. A plate body of the frequency down converter includes a main surface. A first wave guide includes a first section and a second section connected to the first section. The first section is connected to the main surface and extends parallel thereto. The second section extends perpendicular to the main surface. A second wave guide includes a third section and a fourth section connected to the third section. The third section is connected to the main surface and extends parallel thereto. The fourth section extends perpendicular to the main surface.Type: GrantFiled: December 8, 2004Date of Patent: December 23, 2008Assignee: Wistron NeWeb Corp.Inventors: Cheng-Geng Jan, Chieh-Sheng Hsu, San-Yi Kuo, Tzyy-Shinn Huang
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Patent number: 7091917Abstract: A complex antenna apparatus including a base, a circular polarization antenna and a capacitance (inductance) cylinder loading monopole antenna. The base has a central through hole. The circular polarization antenna is disposed on the base and has a hollow feeding portion corresponding to the central through hole. The capacitance (inductance) cylinder loading monopole antenna is fixed on the base by inserting one end of the capacitance (inductance) cylinder loading monopole antenna into the central through hole.Type: GrantFiled: July 28, 2003Date of Patent: August 15, 2006Assignee: Wistron NeWeb Corp.Inventors: Cheng-Geng Jan, Shun-Chung Kuo
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Patent number: 7053833Abstract: A patch antenna includes a metallic ground plate, a metallic radiating element, and a polymer plastic dielectric layer sandwiched between the radiating element and the ground plate. Top and bottom surfaces of the dielectric layer are primed with polymeric surfactants to provide better adhesive characteristics at low temperatures. The radiating element is fixed to the dielectric layer by compressing an adhesive layer applied to the radiating element between the radiating element and the priming layer applied to the top surface of the dielectric layer. The ground plate is fixed to the dielectric layer by compressing another adhesive layer applied to the ground plate between the ground plate and the priming layer applied to the bottom surface of the dielectric layer. A low noise amplifier may be integrated with the antenna by sharing the common ground plate and connecting the amplifier's signal trace to the radiating element via a conductor pin.Type: GrantFiled: July 22, 2004Date of Patent: May 30, 2006Assignee: Wistron NeWeb CorporationInventors: Chieh-Sheng Hsu, Chang-Hsiu Huang, Cheng-Geng Jan
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Patent number: 7050006Abstract: A signal receiver. The signal receiver comprises a flat antenna, a partition, a board, and a plug. The antenna has a receiving element and an antenna surface. The partition has a first partition surface and a second partition surface. The first partition surface contacts the antenna surface. The board has a first board surface, a second board surface and a circuit. The first board surface contacts the second partition surface. The circuit is disposed on the second board surface. The plug has a first pin which is projected through the board and fixed on the first board surface. The first pin is connected with the circuit.Type: GrantFiled: September 28, 2004Date of Patent: May 23, 2006Assignee: Wistron Neweb Corp.Inventors: Cheng-Geng Jan, Jin-Chung Lin, Jui-Hsiang Chou, Chieh-Sheng Hsu
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Patent number: 7030832Abstract: A multi-beam-reflector dish antenna system. Signals from different satellites are simultaneously received using a single compound LNBF module. The antenna dish includes a reflector with N-th order projected aperture and a single compound LNBF module constituting multiple LNBF units. The reflector is formed by projected aperture cutting and surface distortion of the aperture in accordance with the method of analysis and synthesis. In addition to reflecting signals from satellites, it also generates focused waves sharing similar radiation patterns and horizontal gain with incoming waves on the focal plane to be received by the compound LNBF modules.Type: GrantFiled: April 19, 2004Date of Patent: April 18, 2006Assignee: Wistron Neweb CorporationInventors: Jiahn-Rong Gau, Cheng-Geng Jan, Chung-Min Lai
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Publication number: 20060017616Abstract: A patch antenna includes a metallic ground plate, a metallic radiating element, and a polymer plastic dielectric layer sandwiched between the radiating element and the ground plate. Top and bottom surfaces of the dielectric layer are primed with polymeric surfactants to provide better adhesive characteristics at low temperatures. The radiating element is fixed to the dielectric layer by compressing an adhesive layer applied to the radiating element between the radiating element and the priming layer applied to the top surface of the dielectric layer. The ground plate is fixed to the dielectric layer by compressing another adhesive layer applied to the ground plate between the ground plate and the priming layer applied to the bottom surface of the dielectric layer. A low noise amplifier may be integrated with the antenna by sharing the common ground plate and connecting the amplifier's signal trace to the radiating element via a conductor pin.Type: ApplicationFiled: July 22, 2004Publication date: January 26, 2006Inventors: CHIEH-SHENG HSU, CHANG-HSIU HUANG, CHENG-GENG JAN
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Publication number: 20050104779Abstract: A signal receiver. The signal receiver comprises a flat antenna, a partition, a board, and a plug. The antenna has a receiving element and an antenna surface. The partition has a first partition surface and a second partition surface. The first partition surface contacts the antenna surface. The board has a first board surface, a second board surface and a circuit. The first board surface contacts the second partition surface. The circuit is disposed on the second board surface. The plug has a first pin which is projected through the board and fixed on the first board surface. The first pin is connected with the circuit.Type: ApplicationFiled: September 28, 2004Publication date: May 19, 2005Inventors: Cheng-Geng Jan, Jin-Chung Lin, Jui-Hsiang Chou, Chieh-Sheng Hsu
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Patent number: 6873220Abstract: The present invention discloses a method and apparatus for simultaneously receiving linear polarization signals and circular polarization signals. First, the present invention gathers a plurality of signals and separates them into a first linear polarization signal and a circular polarization signal in a predetermined way. The present invention transforms the circular polarization signal into a second linear polarization signal. The first linear polarization signal and the second linear polarization signal are transferred to an electric circuit.Type: GrantFiled: October 22, 2002Date of Patent: March 29, 2005Assignee: Wistron Neweb CorporationInventors: Cheng-Geng Jan, Chung-Min Lai
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Publication number: 20040222935Abstract: A complex antenna apparatus including a base, a circular polarization antenna and a capacitance (inductance) cylinder loading monopole antenna. The base has a central through hole. The circular polarization antenna is disposed on the base and has a hollow feeding portion corresponding to the central through hole. The capacitance (inductance) cylinder loading monopole antenna is fixed on the base by inserting one end of the capacitance (inductance) cylinder loading monopole antenna into the central through hole.Type: ApplicationFiled: July 28, 2003Publication date: November 11, 2004Applicant: WISTRON NEWEB CORP.Inventors: Cheng-Geng Jan, Shun-Chung Kuo
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Publication number: 20040201538Abstract: A multi-beam-reflector dish antenna system. Signals from different satellites are simultaneously received using a single compound LNBF module. The antenna dish includes a reflector with N-th order projected aperture and a single compound LNBF module constituting multiple LNBF units. The reflector is formed by projected aperture cutting and surface distortion of the aperture in accordance with the method of analysis and synthesis. In addition to reflecting signals from satellites, it also generates focused waves sharing similar radiation patterns and horizontal gain with incoming waves on the focal plane to be received by the compound LNBF modules.Type: ApplicationFiled: April 19, 2004Publication date: October 14, 2004Applicant: Wistron Neweb CorporationInventors: Jiahn-Rong Gau, Cheng-Geng Jan, Chung-Min Lai
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Patent number: 6731249Abstract: A multi-beam-reflector dish antenna system. Signals from different satellites are simultaneously received using a single compound LNBF module. The antenna dish includes a reflector with N-th order projected aperture and a single compound LNBF module constituting multiple LNBF units. The reflector is formed by projected aperture cutting and surface distortion of the aperture in accordance with the method of analysis and synthesis. In addition to reflecting signals from satellites, it also generates focused waves sharing similar radiation patterns and horizontal gain with incoming waves on the focal plane to be received by the compound LNBF modules.Type: GrantFiled: April 1, 2003Date of Patent: May 4, 2004Assignee: Wistron Neweb CorporationInventors: Jiahn-Rong Gau, Cheng-Geng Jan, Chung-Min Lai
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Patent number: 6661390Abstract: A wave receiving apparatus comprising a reflector; a conduit for guiding waves, having an open end allowing entrance of polarized waves reflected by the reflector; a septum polarizer monolithically formed with the conduit for effecting a circular-linear polarization conversion; a pair of signal collectors pointing to the same direction or towards each other and positioned at a distance of quarter-wavelength away from the rear end of the conduit for receiving wave signals; and a circuitry module, positioned sidelong next to said conduit seen from said open end into said conduit, to which the signal collectors are electrically connected for handling wave signals.Type: GrantFiled: March 22, 2002Date of Patent: December 9, 2003Assignee: Winstron NeWeb CorporationInventors: Jiahn-Rong Gau, Cheng-Geng Jan, Chung-Min Lai
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Publication number: 20030169126Abstract: The present invention discloses a method and apparatus for simultaneously receiving linear polarization signals and circular polarization signals. First, the present invention gathers a plurality of signals and separates them into a first linear polarization signal and a circular polarization signal in a predetermined way. The present invention transforms the circular polarization signal into a second linear polarization signal. The first linear polarization signal and the second linear polarization signal are transferred to an electric circuit.Type: ApplicationFiled: October 22, 2002Publication date: September 11, 2003Applicant: Wistron NeWeb CorporationInventors: Cheng-Geng Jan, Chung-Min Lai
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Patent number: 6570542Abstract: An integrated dual-directional feed horn, for receiving RF signals from two satellites in small angle, includes a LNBF (first low noise block with integrated feed) and a second LNBF. The antenna dish focus the received RF signals onto receipt points of the focus plane, and the two LNBFs receive focused RF signals. The first LNBF receives circular polarized waves from the BSS satellite. The second LNBF receives linear polarized waves from the FSS satellite. One characteristic of the invention relies on integrating two LNBFs and making the two LNBFs adjacent to each other in the direction of short axis. Accordingly, the two LNBFs receive RF signals from two satellites in small angle. Increasing the length of the long axis thereof increases the areas of the wave-guides. The signal gain and communication quality are obtained.Type: GrantFiled: July 18, 2001Date of Patent: May 27, 2003Assignee: Acer NeWeb Corp.Inventors: Cheng-Geng Jan, Tzung-Fang Huang, Lai Chungmin
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Publication number: 20030030590Abstract: A wave receiving apparatus comprising a reflector; a conduit for guiding waves, having an open end allowing entrance of polarized waves reflected by the reflector; a septum polarizer monolithically formed with the conduit for effecting a circular-linear polarization conversion; a pair of signal collectors pointing to the same direction or towards each other and positioned at a distance of quarter-wavelength away from the rear end of the conduit for receiving wave signals; and a circuitry module, positioned sidelong next to said conduit seen from said open end into said conduit, to which the signal collectors are electrically connected for handling wave signals.Type: ApplicationFiled: March 22, 2002Publication date: February 13, 2003Inventors: Jiahn-Rong Gau, Cheng-Geng Jan, Chung-Min Lai
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Patent number: 6424304Abstract: An antenna apparatus for providing wireless communication comprise a first antenna plate, a second antenna plate and a matched circuit. The matched circuit has a front line and a transferring line so as to be formed as an appropriate impedance between the first antenna plate and the second antenna plate, wherein one end of the transferring line is coupled to the front line forming a T shaped converging portion having a first feedback point and a second feedback point. The first antenna plate has an electrical foot connecting to the first feedback point and a ground foot connecting to the ground. Similarly, the second antenna plate has an electrical foot connecting to the second feedback point and a ground foot connecting to the ground.Type: GrantFiled: June 11, 2001Date of Patent: July 23, 2002Assignee: Acer NeWeb Corp.Inventors: Cheng-Geng Jan, Wei-Li Cheng, Chien-Hsing Fang
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Publication number: 20020008671Abstract: An integrated dual-directional feed horn, for receiving RF signals from two satellites in small angle, includes a LNBF (first low noise block with integrated feed) and a second LNBF. The antenna dish focus the received RF signals onto receipt points of the focus plane, and the two LNBFs receive focused RF signals. The first LNBF receives circular polarized waves from the BSS satellite. The second LNBF receives linear polarized waves from the FSS satellite. One characteristic of the invention relies on integrating two LNBFs and making the two LNBFs adjacent to each other in the direction of short axis. Accordingly, the two LNBFs receive RF signals from two satellites in small angle. Increasing the length of the long axis thereof increases the areas of the wave-guides. The signal gain and communication quality are obtained.Type: ApplicationFiled: July 18, 2001Publication date: January 24, 2002Applicant: Acer NeWeb Corp.Inventors: Cheng-Geng Jan, Tzung-Fang Huang, Lai Chungmin