Patents by Inventor Yulan Sun
Yulan Sun 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).
-
Patent number: 12133847Abstract: The present invention provides an oral pharmaceutical composition and a usage thereof, comprising a pharmaceutically acceptable acidic medicinal auxiliary material whose surface is modified and dabigatran etexilate or pharmaceutically acceptable salts or aquo-complexes thereof. The present invention further provides a surface modification method for a medicinal auxiliary material.Type: GrantFiled: July 7, 2021Date of Patent: November 5, 2024Assignee: Shenzhen Pharmacin, Co., Ltd.Inventors: Zeren Wang, Yulan Zhao, Lijiang Wang, Xiao Zhang, Jun Xu, Shunqin Chen, Meili Sun, Guisheng Jiang
-
Patent number: 10116316Abstract: A receiver with orthogonal beam forming technique is achieved that is capable of differentiating different signal components within the received composite signal. An adaptive processor is used to eliminate the signal component whose phase information is known or can be calculated. The phase information of the major component of a signal can be easily acquired by using a limiter. The phase information of other signal components can be acquired by their direction information and other characteristics, such as modulation scheme, etc. Multiple orthogonal beams can be formed by eliminating one unwanted signal component each time by the adaptive processor until all unwanted signal is eliminated. Thus, a composite signal from multiple sources can be broken down into their component signals.Type: GrantFiled: January 28, 2016Date of Patent: October 30, 2018Assignee: SPATIAL DIGITAL SYSTEMS, INC.Inventors: Donald C. D. Chang, Frank Lu, Yulan Sun
-
Patent number: 9628250Abstract: An advanced digital beam forming technique is achieved that is capable of simultaneously forming multiple beams and attenuating the cross-pol component at multiple locations. The proposed invention, comprising a series of signal inputs, optimization loops and weighting processes, successfully eliminates the side effect of an increase of the cross-pol in the process of beam-forming, thus reducing potential interference. This technique utilizes the orthogonally polarized signal component which is already available and can minimize both the horizontally polarized and vertically polarized cross-pol at the same time. The complexity of computation can be reduced by using only part of the orthogonal polarized components in the optimization.Type: GrantFiled: March 24, 2011Date of Patent: April 18, 2017Assignee: Spatial Digital Systems, Inc.Inventors: Donald C. D. Chang, Frank Lu, Yulan Sun
-
Publication number: 20160164191Abstract: A system for allowing ground terminals, specifically mobile ground terminals, to dynamically and electronically realign signal polarizations to match that of incoming and outgoing signal polarizations from designated space assets, specifically communications from satellites, comprising an adaptive re-orientation technique based on a cost minimization function, and a means of direct calculations of weighting components based on the knowledge of the orientation and bearing of both the satellites and the ground terminals. The embodiment will allow a mobile ground terminal to electronically realign itself to the signals of a satellite, without the need for mechanical processes to physically re-orient the antenna array.Type: ApplicationFiled: January 28, 2016Publication date: June 9, 2016Inventors: Donald C.D. Chang, Frank Lu, Yulan Sun
-
Publication number: 20160142084Abstract: A receiver with orthogonal beam forming technique is achieved that is capable of differentiating different signal components within the received composite signal. An adaptive processor is used to eliminate the signal component whose phase information is known or can be calculated. The phase information of the major component of a signal can be easily acquired by using a limiter. The phase information of other signal components can be acquired by their direction information and other characteristics, such as modulation scheme, etc. Multiple orthogonal beams can be formed by eliminating one unwanted signal component each time by the adaptive processor until all unwanted signal is eliminated. Thus, a composite signal from multiple sources can be broken down into their component signals.Type: ApplicationFiled: January 28, 2016Publication date: May 19, 2016Inventors: Donald C.D. Chang, Frank Lu, Yulan Sun
-
Publication number: 20160079682Abstract: A system for allowing ground terminals, specifically mobile ground terminals, to dynamically and electronically realign signal polarizations to match that of incoming and outgoing signal polarizations from designated space assets, specifically communications from satellites, comprising an adaptive re-orientation technique based on a cost minimization function, and a means of direct calculations of weighting components based on the knowledge of the orientation and bearing of both the satellites and the ground terminals. The embodiment will allow a mobile ground terminal to electronically realign itself to the signals of a satellite, without the need for mechanical processes to physically re-orient the antenna array.Type: ApplicationFiled: November 13, 2015Publication date: March 17, 2016Inventors: Donald C.D. Chang, Frank Lu, Yulan Sun
-
Patent number: 9252799Abstract: A receiver with orthogonal beam forming technique is achieved that is capable of differentiating different signal components within the received composite signal. An adaptive processor is used to eliminate the signal component whose phase information is known or can be calculated. The phase information of the major component of a signal can be easily acquired by using a limiter. The phase information of other signal components can be acquired by their direction information and other characteristics, such as modulation scheme, etc. Multiple orthogonal beams can be formed by eliminating one unwanted signal component each time by the adaptive processor until all unwanted signal is eliminated. Thus, a composite signal from multiple sources can be broken down into their component signals.Type: GrantFiled: November 22, 2010Date of Patent: February 2, 2016Assignee: SPATIAL DIGITAL SYSTEMS, INC.Inventors: Donald C. D. Chang, Yulan Sun, Frank Lu
-
Publication number: 20140266895Abstract: A novel wide null forming system achieves both wide bandwidth and beam width null through employing an antenna array to receive and transmit signals to which a complex null weight vector, calculated by perturbation program, is applied. The novel wide null forming system includes a multiple-element antenna array for receiving or transmitting signals. Multiple conditioning units matching the number of elements is present to condition the signals for proper reception and analysis, after which a series of complex multiplier processors adds complex weights. After being weighted each constituent beam is combined in an adding processor to form one composite beam for use by the user.Type: ApplicationFiled: June 2, 2014Publication date: September 18, 2014Applicant: SPATIAL DIGITAL SYSTEMS, INC.Inventors: Donald C.D. Chang, Yulan Sun, Yuanchang Liu
-
Patent number: 8773307Abstract: A novel wide null forming system achieves both wide bandwidth and beam width null through employing an antenna array to receive and transmit signals to which a complex null weight vector, calculated by perturbation program, is applied. The novel wide null forming system includes a multiple-element antenna array for receiving or transmitting signals. Multiple conditioning units matching the number of elements is present to condition the signals for proper reception and analysis, after which a series of complex multiplier processors adds complex weights. After being weighted each constituent beam is combined in an adding processor to form one composite beam for use by the user.Type: GrantFiled: November 22, 2010Date of Patent: July 8, 2014Assignee: Spatial Digital Systems, Inc.Inventors: Donald C. D. Chang, Yulan Sun, Yuanchang Liu
-
Patent number: 8634760Abstract: A system for allowing ground terminals, mobile or stationary, to dynamically and electronically re-align signal polarizations to match that of incoming signal polarizations from transmitting sources. An adaptive re-orientation technique utilizes a cost minimization function to determine the difference between actual orientation values and desired orientation values. Calculations of satellite and ground terminal orientations and bearings to create weighting components allow a mobile ground terminal to electronically realign itself to the signals of a transmitting source, thereby eliminating the need for physically re-orienting the antenna array through mechanical processes.Type: GrantFiled: July 30, 2010Date of Patent: January 21, 2014Inventors: Donald C. D. Chang, Frank Lu, Yulan Sun
-
Publication number: 20120243581Abstract: An advanced digital beam forming technique is achieved that is capable of simultaneously forming multiple beams and attenuating the cross-pol component at multiple locations. The proposed invention, comprising a series of signal inputs, optimization loops and weighting processes, successfully eliminates the side effect of an increase of the cross-pol in the process of beam-forming, thus reducing potential interference. This technique utilizes the orthogonally polarized signal component which is already available and can minimize both the horizontally polarized and vertically polarized cross-pol at the same time. The complexity of computation can be reduced by using only part of the orthogonal polarized components in the optimization.Type: ApplicationFiled: March 24, 2011Publication date: September 27, 2012Inventors: FRANK LU, DONALD C. D. CHANG, YULAN SUN
-
Publication number: 20120063550Abstract: A receiver with orthogonal beam forming technique is achieved that is capable of differentiating different signal components within the received composite signal. An adaptive processor is used to eliminate the signal component whose phase information is known or can be calculated. The phase information of the major component of a signal can be easily acquired by using a limiter. The phase information of other signal components can be acquired by their direction information and other characteristics, such as modulation scheme, etc. Multiple orthogonal beams can be formed by eliminating one unwanted signal component each time by the adaptive processor until all unwanted signal is eliminated. Thus, a composite signal from multiple sources can be broken down into their component signals.Type: ApplicationFiled: November 22, 2010Publication date: March 15, 2012Inventors: Donald C. D. Chang, Yulan Sun, Frank Lu
-
Publication number: 20120063542Abstract: A novel wide null forming system achieves both wide bandwidth and beam width null through employing an antenna array to receive and transmit signals to which a complex null weight vector, calculated by perturbation program, is applied. The novel wide null forming system includes a multiple-element antenna array for receiving or transmitting signals. Multiple conditioning units matching the number of elements is present to condition the signals for proper reception and analysis, after which a series of complex multiplier processors adds complex weights. After being weighted each constituent beam is combined in an adding processor to form one composite beam for use by the user.Type: ApplicationFiled: November 22, 2010Publication date: March 15, 2012Inventors: Yuanchang Liu, Yulan Sun, Donald C. D. Chang
-
Publication number: 20120028572Abstract: A system for allowing ground terminals, specifically mobile ground terminals, to dynamically and electronically realign signal polarizations to match that of incoming and outgoing signal polarizations from designated space assets, specifically communications from satellites, comprising an adaptive re-orientation technique based on a cost minimization function, and a means of direct calculations of weighting components based on the knowledge of the orientation and bearing of both the satellites and the ground terminals. The embodiment will allow a mobile ground terminal to electronically realign itself to the signals of a satellite, without the need for mechanical processes to physically re-orient the antenna array.Type: ApplicationFiled: July 30, 2010Publication date: February 2, 2012Inventors: Frank Lu, Donald C.D. Chang, Yulan Sun
-
Publication number: 20110032143Abstract: An advanced multiple-beam fixed ground terminal is achieved that is capable of simultaneously tracking multiple inclined orbit satellites, increasing and suppressing gain in multiple directions. The fixed user terminal equipped with digital beam-forming and null-forming technique can track and identify signals from multiple inclined orbit satellites at the same time. This technique enables a geostationary satellite drift to an inclined orbit without losing communication with ground terminals which not only increase the life span of an inclined orbit satellite, but also relieve the scarcity of geo-stationary orbit. In extreme cases, satellite can be placed in the same slot which further enhanced the usage of geosynchronous orbits. Another present invention is to from double nulls whose null width is much wider than a single null. A wider null increases the system robustness to frequency drift and change of signal direction, thus in turn reduce the system's complexity by lowering update beam wave vectors.Type: ApplicationFiled: August 2, 2010Publication date: February 10, 2011Inventors: Yulan Sun, Donald D. C. Chang, Frank Lu
-
Patent number: D952932Type: GrantFiled: May 25, 2021Date of Patent: May 24, 2022Inventor: Yulan Sun
-
Patent number: D961836Type: GrantFiled: May 25, 2021Date of Patent: August 23, 2022Inventor: Yulan Sun