Patents by Inventor Hun Wang
Hun Wang 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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Publication number: 20230224191Abstract: A differential transmission line having a switch may comprise: a first transmission line comprising a first distribution element having a first impedance; a second transmission line comprising a second distribution element having a second impedance; and a first switch block connected between a first end of the first transmission line and a first end of the second transmission line, wherein the first switch block comprises a first switch connected in series to the first end of the first transmission line, a second switch connected in series to the first end of the second transmission line, a first-cross capacitor connected between a first terminal of the first switch and a second terminal of the second switch, and a second cross-capacitor connected between a first terminal of the second switch and a second terminal of the first switch.Type: ApplicationFiled: November 28, 2022Publication date: July 13, 2023Inventors: Seung Hun WANG, Sun Woo KONG, Bong Hyuk PARK, Hui Dong LEE, Seung Hyun JANG, Seok Bong HYUN
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Patent number: 11277118Abstract: A variable gain phase shifter includes an I/Q generator and a vector summation circuit. The I/Q generator generates phase signals based on an input signal. The vector summation circuit adjusts magnitudes and directions of first, second, third and fourth in-phase vectors and first, second, third and fourth quadrature vectors, and generates an output signal by summing the in-phase vectors and the quadrature vectors, based on the phase signals, selection signals and current control signals. The vector summation circuit includes first, second, third and fourth vector summation cells and first, second, third and fourth current control circuits. The first and second vector summation cells adjust the directions of the first and second in-phase vectors and the first and second quadrature vectors. The third and fourth vector summation cells adjust the directions of the third and fourth in-phase vectors and the third and fourth quadrature vectors.Type: GrantFiled: October 15, 2020Date of Patent: March 15, 2022Assignee: Korea Advanced Institute of Science and TechnologyInventors: Song-cheol Hong, Jin-seok Park, Seung-hun Wang, Seung-hoon Kang
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Publication number: 20210028768Abstract: A variable gain phase shifter includes an I/Q generator and a vector summation circuit. The I/Q generator generates phase signals based on an input signal. The vector summation circuit adjusts magnitudes and directions of first, second, third and fourth in-phase vectors and first, second, third and fourth quadrature vectors, and generates an output signal by summing the in-phase vectors and the quadrature vectors, based on the phase signals, selection signals and current control signals. The vector summation circuit includes first, second, third and fourth vector summation cells and first, second, third and fourth current control circuits. The first and second vector summation cells adjust the directions of the first and second in-phase vectors and the first and second quadrature vectors. The third and fourth vector summation cells adjust the directions of the third and fourth in-phase vectors and the third and fourth quadrature vectors.Type: ApplicationFiled: October 15, 2020Publication date: January 28, 2021Applicant: Korea Advanced Institute of Science and TechnologyInventors: Song-cheol HONG, Jin-seok PARK, Seung-hun WANG, Seung-hoon KANG
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Patent number: 10848130Abstract: A variable gain phase shifter includes an I/Q generator and a vector summation circuit. The I/Q generator generates phase signals based on an input signal. The vector summation circuit adjusts magnitudes and directions of first, second, third and fourth in-phase vectors and first, second, third and fourth quadrature vectors, and generates an output signal by summing the in-phase vectors and the quadrature vectors, based on the phase signals, selection signals and current control signals. The vector summation circuit includes first, second, third and fourth vector summation cells and first, second, third and fourth current control circuits. The first and second vector summation cells adjust the directions of the first and second in-phase vectors and the first and second quadrature vectors. The third and fourth vector summation cells adjust the directions of the third and fourth in-phase vectors and the third and fourth quadrature vectors.Type: GrantFiled: December 18, 2017Date of Patent: November 24, 2020Assignee: Korea Advanced Institute of Science and TechnologyInventors: Song-cheol Hong, Jin-seok Park, Seung-hun Wang, Seung-hoon Kang
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Publication number: 20200220524Abstract: A variable gain phase shifter includes an I/Q generator and a vector summation circuit. The I/Q generator generates phase signals based on an input signal. The vector summation circuit adjusts magnitudes and directions of first, second, third and fourth in-phase vectors and first, second, third and fourth quadrature vectors, and generates an output signal by summing the in-phase vectors and the quadrature vectors, based on the phase signals, selection signals and current control signals. The vector summation circuit includes first, second, third and fourth vector summation cells and first, second, third and fourth current control circuits. The first and second vector summation cells adjust the directions of the first and second in-phase vectors and the first and second quadrature vectors. The third and fourth vector summation cells adjust the directions of the third and fourth in-phase vectors and the third and fourth quadrature vectors.Type: ApplicationFiled: December 18, 2017Publication date: July 9, 2020Applicant: Korea Advanced Institute of Science and TechnologyInventors: Song-cheol HONG, Jin-seok PARK, Seung-hun WANG, Seung-hoon KANG
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Publication number: 20070269509Abstract: This invention relates to an oral pharmaceutical formulation formed by a direct coating of an enteric layer containing polyethylene glycol as a plasticizer on a core containing an acid-labile pantoprazole, and its manufacturing method. The enteric-coated oral pharmaceutical formulation of this invention, which combines directly a core containing an acid-labile pantoprazole and an enteric layer in the absence of an inert intermediate layer, is able to improve the storage stability of the acid-labile pantoprazole and maximize the bioavailability and oral absorption rates via preventing related substances from increasing.Type: ApplicationFiled: February 8, 2006Publication date: November 22, 2007Inventors: Woo Song, Hun Wang, Min Kwon, Jun Park
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Publication number: 20070212415Abstract: The present invention relates to a sustained-release tablet containing doxazosin mesylate, and more particularly to a sustained-release tablet of which drug release rate maintains constant for 8 hours and longer.Type: ApplicationFiled: August 26, 2005Publication date: September 13, 2007Applicant: GL PharmTech Corp.Inventors: Jun Sang Park, Ji-Yeon Shim, Hun Wang, Min Kwon
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Publication number: 20050121736Abstract: A receiver optical subassembly for transforming received optical signal into electrical signal includes at least a ceramic substrate, a photo receiver and a transimpedance amplifier. There are high-speed traces formed on the substrate. The positive and negative pads of the photo receiver are coplanar and connected to the traces without wire bonding so as to reduce the parasitic impedance effect and improve the high-speed performance of the optical subassembly. The transimpedance amplifier is electrically connected to the traces via flip chip, wire bonding or other methods. The photo receiver and the transimpedance amplifier are connected via the high-speed traces formed on the substrate.Type: ApplicationFiled: May 27, 2004Publication date: June 9, 2005Inventors: Chiung-Hun Wang, Chun-Hsing Lee, Yi-Ming Chen, Shin-Ge Lee, Chih-Li Chen, Ming-Fa Huang, Chih-Hao Hsu
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Publication number: 20050100606Abstract: Provided is a controlled-release formulation of tamsulosin hydrochloride, which includes a granular core, and a drug-coating layer coated on the granular core, including the tamsulosin hydrochloride and a release-controlling agent selected from the group consisting of (a) a first copolymer of 1 part by weight of ethylacrylate, 2 parts by weight of methylmethacrylate, and 0.1 parts by weight of trimethylammonioethyl methacrylate chloride, (b) a mixture of the first copolymer and a second copolymer of 1 part by weight of ethylacrylate, 2 parts by weight of methylmethacrylate, and 0.2 parts by weight of trimethylammonioethyl methacrylate chloride, the weight ratio between the first copolymer and the second copolymer being 1: 0.05 to 0.2, and (c) polyvinylacetate. A process for preparing the controlled-release formulation of the tamsulosin hydrochloride is also provided.Type: ApplicationFiled: December 30, 2003Publication date: May 12, 2005Applicants: GL PharmTech Corp., CTC BIO, INC.Inventors: Hun Wang, Jun Park, Min Kwon, Ji Shim, Bong Lee, Hong Jeon