Patents by Inventor CHIA-HO WU
CHIA-HO WU 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).
-
Publication number: 20190013557Abstract: The present invention provides a crosstalk isolation structure for reducing crosstalk, comprising a conductive line and two grounded resistors. The conductive line comprises a plurality of teeth structures arranged periodically. The two grounded resistors are coupled to two ends of the conductive line, respectively. The plurality of teeth structures are periodically arranged in a subwavelength configuration that a period length of the plurality of teeth structures is smaller than the wavelength of an electromagnetic signal generated by a crosstalk around the conductive line, whereby impingement of electromagnetic wave is isolated by the plurality of teeth structures.Type: ApplicationFiled: August 27, 2018Publication date: January 10, 2019Inventor: Chia-Ho Wu
-
Patent number: 10090574Abstract: The present invention provides a microstrip isolation structure for reducing crosstalk, comprising a microstrip line and two grounded resistors. The microstrip line comprises a plurality of indentation structures arranged periodically. The two grounded resistors are connected to two ends of the microstrip line, respectively. The plurality of indentation structures are periodically arranged in a subwavelength configuration that a period length of the plurality of indentation structures is far smaller than a wavelength of a transmission signal generated by a crosstalk around the microstrip line, whereby impingement of electromagnetic wave is confined by the plurality of indentation structures.Type: GrantFiled: January 8, 2016Date of Patent: October 2, 2018Inventor: Chia-Ho Wu
-
Patent number: 9615446Abstract: The present invention discloses a pair of differential microstrip lines with low cross-talk for high-frequency signal transmission. The pair of microstrip lines comprises two microstrip lines. The first microstrip line is used to transmit the first transmission signal. The second microstrip line is parallel to the first microstrip line and used to transmit the second transmission signal. The first transmission signal is the complementary signal of the second transmission signal and has a 180° phase difference from the second transmission signal. Particularly, there are a plurality of slots periodically arranged on the outer sides of the first and the second microstrip lines to form a subwavelength configuration. The subwavelength configuration is to make the periodical arrangement length of these slots shorter than the wavelengths of the first and the second transmission signals. These slots can provide subwavelength confinement for enhancing electromagnetic wave.Type: GrantFiled: August 14, 2014Date of Patent: April 4, 2017Assignee: CHUNG HUA UNIVERSITYInventor: Chia-Ho Wu
-
Publication number: 20170062893Abstract: The present invention provides a microstrip isolation structure for reducing crosstalk, comprising a microstrip line and two grounded resistors. The microstrip line comprises a plurality of indentation structures arranged periodically. The two grounded resistors are connected to two ends of the microstrip line, respectively. The plurality of indentation structures are periodically arranged in a subwavelength configuration that a period length of the plurality of indentation structures is far smaller than a wavelength of a transmission signal generated by a crosstalk around the microstrip line, whereby impingement of electromagnetic wave is confined by the plurality of indentation structures.Type: ApplicationFiled: January 8, 2016Publication date: March 2, 2017Inventor: Chia-Ho Wu
-
Patent number: 9502744Abstract: The invention is related to a microstrip line structure, which comprises: a first microstrip line and a second microstrip line, paralleled with the first microstrip line for transferring a transmission signal, and a plurality of grooves periodically arranged on both sides of the second microstrip line by using subwavelength, and each period length in the plurality of grooves is smaller than the wavelength of the transmission signal.Type: GrantFiled: April 15, 2014Date of Patent: November 22, 2016Assignee: CHUNG HUA UNIVERSITYInventors: Chia-Ho Wu, Tzong-Jer Yang
-
Patent number: 9140855Abstract: A structure of a low frequency surface plasmon polariton waveguide includes multiple unit cell blocks arranged at a sub-wavelength period to line up in a one-dimensional line-up direction to form a hollow metallic block periodic structure. Each unit cell blocs includes a body, a penetration section, and an open slot. The penetration section is formed in the unit cell block by extending in a direction perpendicular to the one-dimensional line-up direction so as to define a channel space in the unit cell block. In a low frequency spoof surface plasmon polariton transmission mode, in case of serving as a structure of an antenna, each unit cell block has an electromagnetic field distribution mostly confined in a channel space of the unit cell block; and in case of serving as a waveguide, the electromagnetic field is mostly distributed between two adjacent unit cell blocks with minority distributed in the channel space.Type: GrantFiled: December 30, 2013Date of Patent: September 22, 2015Assignee: Chung Hua UniversityInventor: Chia Ho Wu
-
Publication number: 20150236394Abstract: The present invention discloses a pair of differential microstrip lines with low cross-talk for high-frequency signal transmission. The pair of microstrip lines comprises two microstrip lines. The first microstrip line is used to transmit the first transmission signal. The second microstrip line is parallel to the first microstrip line and used to transmit the second transmission signal. The first transmission signal is the complementary signal of the second transmission signal and has a 180° phase difference from the second transmission signal. Particularly, there are a plurality of slots periodically arranged on the outer sides of the first and the second microstrip lines to form a subwavelength configuration. The subwavelength configuration is to make the periodical arrangement length of these slots shorter than the wavelengths of the first and the second transmission signals. These slots can provide subwavelength confinement for enhancing electromagnetic wave.Type: ApplicationFiled: August 14, 2014Publication date: August 20, 2015Inventor: CHIA-HO WU
-
Publication number: 20150185417Abstract: A structure of a low frequency surface plasmon polariton waveguide includes multiple unit cell blocks arranged at a sub-wavelength period to line up in a one-dimensional line-up direction to form a hollow metallic block periodic structure. Each unit cell blocs includes a body, a penetration section, and an open slot. The penetration section is formed in the unit cell block by extending in a direction perpendicular to the one-dimensional line-up direction so as to define a channel space in the unit cell block. In a low frequency spoof surface plasmon polariton transmission mode, in case of serving as a structure of an antenna, each unit cell block has an electromagnetic field distribution mostly confined in a channel space of the unit cell block; and in case of serving as a waveguide, the electromagnetic field is mostly distributed between two adjacent unit cell blocks with minority distributed in the channel space.Type: ApplicationFiled: December 30, 2013Publication date: July 2, 2015Applicant: CHUNG HUA UNIVERSITYInventor: CHIA HO WU
-
Publication number: 20140218137Abstract: The invention is related to a microstrip line structure, which comprises: a first microstrip line and a second microstrip line, paralleled with the first microstrip line for transferring a transmission signal, and a plurality of grooves periodically arranged on both sides of the second microstrip line by using subwavelength, and each period length in the plurality of grooves is smaller than the wavelength of the transmission signal.Type: ApplicationFiled: April 15, 2014Publication date: August 7, 2014Applicant: CHUNG HUA UNIVERSITYInventors: CHIA-HO WU, TZONG-JER YANG
-
Patent number: 8742868Abstract: The invention is related to a microstrip line structure, which comprises: a first microstrip line and a second microstrip line, paralleled with the first mircostrip line for transferring a transmission signal, and a plurality of grooves periodically arranged on both sides of the second microstrip line by using subwavelength, and each period length in the plurality of grooves is smaller than the wavelength of the transmission signal.Type: GrantFiled: April 29, 2011Date of Patent: June 3, 2014Assignee: Chung Hua UniversityInventors: Chia-Ho Wu, Tzong-Jer Yang
-
Publication number: 20120133454Abstract: The invention is related to a microstrip line structure, which comprises: a first microstrip line and a second microstrip line, paralleled with the first mircostrip line for transferring a transmission signal, and a plurality of grooves periodically arranged on both sides of the second microstrip line by using subwavelength, and each period length in the plurality of grooves is smaller than the wavelength of the transmission signal.Type: ApplicationFiled: April 29, 2011Publication date: May 31, 2012Applicant: Chung Hua UniversityInventors: CHIA-HO WU, Tzong-Jer Yang