Patents by Inventor Shuji Nojima
Shuji Nojima 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: 8604815Abstract: An I/O pin is connected to a DUT via a transmission line. A driver generates a test signal to be supplied to the DUT. A driver-side switch and an output resistor are arranged in series between the driver and the I/O pin. A comparator is arranged such that the input terminal thereof is connected to the I/O pin, and configured to judge the level of a signal output from the DUT. A short-circuit switch is arranged between the I/O pin and the ground terminal.Type: GrantFiled: June 21, 2011Date of Patent: December 10, 2013Assignee: Advantest CorporationInventor: Shuji Nojima
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Publication number: 20110316575Abstract: An I/O pin is connected to a DUT via a transmission line. A driver generates a test signal to be supplied to the DUT. A driver-side switch and an output resistor are arranged in series between the driver and the I/O pin. A comparator is arranged such that the input terminal thereof is connected to the I/O pin, and configured to judge the level of a signal output from the DUT. A short-circuit switch is arranged between the I/O pin and the ground terminal.Type: ApplicationFiled: June 21, 2011Publication date: December 29, 2011Applicant: ADVANTEST CORPORATIONInventor: Shuji Nojima
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Patent number: 7947908Abstract: An electronic device is provided. The electronic device includes: a circuit board having a surface on which a hollow is formed; an electronic component placed into the hollow; a pattern wiring which is formed on a bottom surface of the hollow and whose tip is provided at a position corresponding to a signal electrode of the electronic component; a signal wire connecting a tip of the pattern wiring and the signal electrode of the electronic component; two in-hollow ground patterns formed so as to sandwich the tip of the pattern wiring therebetween on the bottom surface of the hollow; and two or more ground wires that connect two ground electrodes provided on the electronic component so as to sandwich the signal electrode therebetween to the corresponding in-hollow ground patterns, respectively.Type: GrantFiled: October 19, 2007Date of Patent: May 24, 2011Assignee: Advantest CorporationInventors: Shoichi Mizuno, Hiroaki Takeuchi, Shuji Nojima
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Patent number: 7915957Abstract: Provided is a distributed amplification apparatus that outputs an output signal obtained by amplifying an input signal input thereto, comprising an input-side transmission line that transmits the input signal; an output-side transmission line that transmits the output signal; and a plurality of amplifiers that are provided in parallel between the input-side transmission line and the output-side transmission line, the amplifiers each amplifying the input signal transmitted on the input-side transmission line and supplying the amplified signal to the output-side transmission line. Each amplifier includes a transistor; a capacitor provided on a line that transmits the input signal to a gate terminal of the transistor; and a gate-ground resistance that is provided between the gate terminal of the transistor and a ground potential.Type: GrantFiled: April 1, 2010Date of Patent: March 29, 2011Assignee: Advantest CorporationInventor: Shuji Nojima
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Publication number: 20100253434Abstract: Provided is a distributed amplification apparatus that outputs an output signal obtained by amplifying an input signal input thereto, comprising an input-side transmission line that transmits the input signal; an output-side transmission line that transmits the output signal; and a plurality of amplifiers that are provided in parallel between the input-side transmission line and the output-side transmission line, the amplifiers each amplifying the input signal transmitted on the input-side transmission line and supplying the amplified signal to the output-side transmission line. Each amplifier includes a transistor; a capacitor provided on a line that transmits the input signal to a gate terminal of the transistor; and a gate-ground resistance that is provided between the gate terminal of the transistor and a ground potential.Type: ApplicationFiled: April 1, 2010Publication date: October 7, 2010Applicant: ADVANTEST CORPORATIONInventor: Shuji NOJIMA
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Publication number: 20090101396Abstract: An electronic device is provided. The electronic device includes: a circuit board having a surface on which a hollow is formed; an electronic component placed into the hollow; a pattern wiring which is formed on a bottom surface of the hollow and whose tip is provided at a position corresponding to a signal electrode of the electronic component; a signal wire connecting a tip of the pattern wiring and the signal electrode of the electronic component; two in-hollow ground patterns formed so as to sandwich the tip of the pattern wiring therebetween on the bottom surface of the hollow; and two or more ground wires that connect two ground electrodes provided on the electronic component so as to sandwich the signal electrode therebetween to the corresponding in-hollow ground patterns, respectively.Type: ApplicationFiled: October 19, 2007Publication date: April 23, 2009Applicant: ADVANTEST CORPORATIONInventors: SHOICHI MIZUNO, HIROAKI TAKEUCHI, SHUJI NOJIMA
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Patent number: 6348840Abstract: A variable-tuned type YIG oscillator accompanied with substantially no mechanical variations in the resonance circuit and a method of manufacturing the same are provided. An amplifier element, electrode, circuit pattern and others of the oscillator circuit portion of a YIG oscillator are integrated on the front face of a semiconductor substrate by the monolithic microwave integrated circuit manufacturing technique. A coupling loop is formed as a thick film conductor shaped so as to surround at least a portion of the outer periphery of a YIG crystal ball on the semiconductor substrate having the amplifier element, electrode, circuit pattern and others formed thereon. A hole for positioning a YIG crystal ball at a predetermined position inside of the coupling loop is formed in the semiconductor substrate from the front surface of the substrate, and the YIG crystal ball is fitted and fixed in the hole.Type: GrantFiled: May 24, 2001Date of Patent: February 19, 2002Assignee: Advantest CorporationInventors: Tomohiko Ezura, Shuji Nojima
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Publication number: 20010024143Abstract: A variable-tuned type YIG oscillator accompanied with substantially no mechanical variations in the resonance circuit and a method of manufacturing the same are provided.Type: ApplicationFiled: May 24, 2001Publication date: September 27, 2001Inventors: Tomohiko Ezura, Shuji Nojima
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Patent number: 6259331Abstract: A variable-tuned type YIG oscillator accompanied with substantially no mechanical variations in the resonance circuit and a method of manufacturing the same are provided. An amplifier element, electrode, circuit pattern and others of the oscillator circuit portion of a YIG oscillator are integrated on the front face of a semiconductor substrate by the monolithic microwave integrated circuit manufacturing technique. A coupling loop is formed as a thick film conductor shaped so as to surround at least a portion of the outer periphery of a YIG crystal ball on the semiconductor substrate having the amplifier element, electrode, circuit pattern and others formed thereon. A hole for positioning a YIG crystal ball at a predetermined position inside of the coupling loop is formed in the semiconductor substrate from the front surface of the substrate, and the YIG crystal ball is fitted and fixed in the hole.Type: GrantFiled: June 30, 1999Date of Patent: July 10, 2001Assignee: Advantest CorporationInventors: Tomohiko Ezura, Shuji Nojima