Patents Assigned to Comba Telecom Systems (China) Ltd
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Publication number: 20200227812Abstract: The present application provides a multi-system integrated antenna, including reflective plate, intelligent antenna array and base station antenna array both disposed on reflective plate. Intelligent antenna array is at lower end of reflective plate, and includes intelligent antenna subarrays each composed of plurality of intelligent antenna array elements. Base station antenna array includes first base station antenna array elements and second base station antenna array elements. First base station antenna array elements are located at upper end of reflective plate, and second base station antenna array elements are embedded in gaps of intelligent antenna array elements, and enclose intelligent antenna array elements of two adjacent intelligent antenna subarrays. Intelligent antenna array gaps are fully used by second base station antenna array element, increasing base station antenna array elements without increasing reflective plate size. Antenna gain, and facilitating antenna miniaturization is achieved.Type: ApplicationFiled: May 23, 2017Publication date: July 16, 2020Applicants: Comba Telecom Technology (Guangzhou) Ltd., Comba Telecom Technology (Guangzhou) Ltd., Comba Telecom Systems (China) Ltd., Comba Telecom Systems (China) Ltd., Tianjin Comba Telecom Systems Ltd., Tianjin Comba Telecom Systems Ltd.Inventors: Shanqiu Sun, Qiang Wang, Mingchao Li, Liwen Huang, Weiwei Jiang
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Publication number: 20200067159Abstract: The present invention relates to the field of communications technology, and in particular, to technology related to impedance matching in communication technology, and in particular, to a dielectric phase shifting unit, dielectric phase shifter and base station antenna. It includes a feeding network and a dielectric plate for impedance matching and for moving along a predetermined path, an impedance matching portion of the dielectric plate being disposed on one end of the dielectric plate adjacent to an input port on the feeding network. The present invention not only reduces the number of impedance matching and network loss; it also reduces the equivalent electrical length of the entire network, effectively saving costs, reducing the complexity of disassembly and assembly of related components, and improves disassembly and assembly efficiency.Type: ApplicationFiled: May 19, 2017Publication date: February 27, 2020Applicants: Comba Telecom Technology (Guangzhou) Ltd., Comba Telecom Systems (China) Ltd., Tianjin Comba Telecom Systems Ltd.Inventors: Litao Chen, Bin Gao, Peitao Liu, Guosheng Su
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Publication number: 20190366490Abstract: The disclosure relates to the field of welding technology. A welding base includes a welding groove defined therein. A limiting member is arranged inside the welding groove for preventing solder and to-be-welded member from loosening from the welding groove after the to-be-welded member is welded to the welding joint. Based on the prior art welding base, the inside of the welding groove of the present disclosure is provided with a limiting member, which can prevent the solder from a longitudinal movement, thus preventing the solder from falling off the welding groove.Type: ApplicationFiled: May 23, 2017Publication date: December 5, 2019Applicants: COMBA TELECOM TECHNOLOGY (GUANGZHOU) LTD., COMBA TELECOM SYSTEMS (CHINA) LTD., TIANJIN COMBA TELECOM SYSTEMS LTD.Inventors: Binlong Bu, Peitao Liu, Jianjun You, Hongbin Duan, Lijing Peng
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Patent number: 10313856Abstract: The present invention disclosed a unified communication system based on micro base station. The system includes: a micro base station subsystem, a landline telephone network subsystem, an office network subsystem and a communication switching subsystem. The communication switching subsystem receives a voice service request from the micro base station subsystem and the landline telephone network subsystem, sends the voice service request to the micro base station subsystem when a called user in the voice service request is a mobile communication intranet user, sends the voice service request to the landline telephone network subsystem when the called user in the voice service request is a landline telephone network user, receives a service request from the micro base station subsystem, and sends the service request to the office network subsystem.Type: GrantFiled: August 24, 2015Date of Patent: June 4, 2019Assignee: COMBA TELECOM SYSTEMS (CHINA) LTD.Inventors: Yingtian Hu, Kai Li
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Patent number: 9961563Abstract: The invention discloses a small cell base station system, and related devices and data processing methods, and the small cell base station system includes an extended small cell base station and at least one distributed component, where the extended small cell base station includes a network protocol processing module, an upper layer protocol processing module, a physical layer protocol processing module, a first baseband data processing module, and a first transceiver module; and the distributed component includes a second baseband data processing module and a second transceiver module, where in the downlink, the first baseband data processing module separates downlink baseband data into at least two branches, performs a data alignment operation on the at least two branches of downlink baseband data, sends one of the branches to the first transceiver module, and Ethernet encapsulates and then sends the remaining branches to the second transceiver module through the second baseband data processing module of tType: GrantFiled: April 23, 2015Date of Patent: May 1, 2018Assignee: COMBA TELECOM SYSTEMS (CHINA) LTD.Inventors: Shaohu Fang, Bo Yang, Wei Xiang
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Patent number: 9838885Abstract: Disclosed are a wireless communication system and method and an expansion unit of a flat network architecture. The wireless communication system comprises at least one baseband signal source, an expansion unit (EU) and at least one remote radio unit (RU) connected to the EU. By overlapping the baseband signals output by each baseband signal source, remote transmission and wireless coverage of multimode digital signals are achieved, thereby solving the problem of system performance degradation caused by the interaction of radio-frequency analog signal transmission and optical transmission in the prior art.Type: GrantFiled: November 2, 2012Date of Patent: December 5, 2017Assignee: COMBA TELECOM SYSTEMS (CHINA) LTD.Inventors: Yingtian Hu, Jinqing Zhou, Yuanjian Zhang, Shiqun Deng, Yuejun Zhang
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Patent number: 9831553Abstract: A multi-frequency array antenna, includes a reflective metal plate, a low-frequency radiation column element which is arranged on the reflective metal plate and operating in a first frequency band range, and a high-frequency radiation column element operating in a second frequency band range. The low-frequency radiation column element comprises several low-frequency radiation units arranged at an equal first distance in the axial direction of a first reference axis. The high-frequency radiation column element comprises several high-frequency radiation units arranged at an equal second distance in the axial direction of the first reference axis. The first distance is 2.5 times the second distance. At least one of the low-frequency radiation units is nested with one high-frequency radiation unit locationally corresponding thereto, and at least one of the low-frequency radiation units is axially located between two adjacent high-frequency radiation units close to the low-frequency radiation unit.Type: GrantFiled: October 24, 2013Date of Patent: November 28, 2017Assignee: Comba Telecom Systems (China) LtdInventors: Peitao Liu, Feifei Jia, Shanqiu Sun
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Patent number: 9780425Abstract: A microwave component of cavity type includes an integral cavity and a microwave network circuit disposed in the cavity. The cavity has multiple enclosing walls and a chamber defined by said multiple enclosing walls. The chamber is intended for accommodating the microwave network circuit therein. A wiring slot is defined in at least one of the enclosing walls, and at least one first through hole extended through the chamber is provided on each wiring slot. The microwave component of cavity type features small size, simple structure, and wide application. Furthermore, cost may be reduced, batch production may be achieved, use of fasteners such as screws is avoided, and the passive inter-modulation products caused by fasteners are eliminated, as the microwave component is secured without any screws.Type: GrantFiled: January 27, 2015Date of Patent: October 3, 2017Assignees: COMBA TELECOM SYSTEMS (CHINA) LTD., COMBA TELECOM TECHNOLOGY (GUANGZHOU) LTD., COMBA TELECOM SYSTEMS (GUANGZHOU) LTD., TIANJIN COMBA TELECOM SYSTEMS LTD.Inventors: Peitao Liu, Guosheng Su, Fengzhang Xue, Litao Chen, Binlong Bu
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Patent number: 9705205Abstract: A bi-polarized broadband annular radiation unit, for being installed on a metal reflective plate thus constituting a communication antenna and defining an annular construction by two pairs of orthogonally polarized dipoles, includes two pairs of orthogonally polarized dipoles, each dipole comprising two symmetrical unit arms of a single line sheet shape, one end of a unit arm being facing to a corresponding end of the other unit arm, and a distal end of each unit arm of at least one pair of dipoles is provided with a loading line; and a plurality of balun arms feeding power to and supporting respective dipoles, each balun arm including two parallel balun lines, and the top ends of the two balun lines being connected with corresponding ends of the two unit arms of a corresponding dipole. Each unit arm and the balun line and/or loading line connected to the same unit arm are made by sheet metal stamping forming process or casting process.Type: GrantFiled: February 19, 2013Date of Patent: July 11, 2017Assignees: ANHUI MOBILE COMMUNICATION CO. LTD, COMBA TELECOM SYSTEM (CHINA) LTDInventors: Peitao Liu, Qinyuan Wang, Shan Qiu Sun, Liwen Huang, Yingchun Zhang, Qing Tang
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Patent number: 9642152Abstract: A resource allocation method and base station. The resource allocation method comprises: within a current scheduling period, determining priorities of users in a cell for sub-carriers in available frequency resources, and among the available frequency resources of the cell, allocating a corresponding available frequency resource for each user in the cell according to the priorities of all users for the sub-carriers, so that the frequency resources that can be used by the edge users cover all available frequency ranges of the cell. Therefore, when frequency selectivity fading occurs in the channel, a decline in communication quality caused by allocating carrier resources for the edge users in the limited frequency resources is avoided, the probability that the edge users use deeply fading frequency resources is reduced, and interruption in the communication process is decreased, thereby improving system throughput.Type: GrantFiled: August 8, 2013Date of Patent: May 2, 2017Assignee: Comba Telecom Systems (China) LtdInventor: Hanguang Wu
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Patent number: 9577301Abstract: A feeding network is realized by dielectric phase shifting module. The module includes a dielectric device into which interlayer space is defined, a first conductor and a second conductor disposed side by side into the interlayer space and a third conductor located outside of the interlayer space and connected, at different locations, to one end, located at a same side, of each of the first and second conductors. Another end of the first conductor is defined as an input end, while another end of the second conductor and any end of the third conductor are all defined as output ends. The dielectric device is configured to slide along a longitudinal direction of the first and second conductors under external force so as to change phase of signals fed in from the input end and fed out from the output ends. Two dielectric phase-shift modules constitute a phase-shift unit thereof.Type: GrantFiled: January 16, 2014Date of Patent: February 21, 2017Assignee: COMBA TELECOM SYSTEM (CHINA) LTD.Inventors: Ming Cao, Peitao Liu, Shanqiu Sun
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Patent number: 9559432Abstract: A multi-frequency shared antenna comprises a low frequency radiation array and a first high frequency radiation array both of which are disposed on a reflection plate and provided with power by different feeding networks. The first high frequency radiation array comprises a number of high frequency radiation units, at least partial high frequency radiation units are arranged on a same axis which overlaps one of two axes of the low frequency radiation array, in all high frequency radiation units arranged on said axis, at least partial high frequency radiation units are nested with the low frequency radiation units arranged on the same axis, and the orthogonal projection area of these nested high frequency radiation units on the reflection plate falls within the orthogonal projection area of the corresponding low frequency radiation units on the same reflection plate.Type: GrantFiled: December 28, 2012Date of Patent: January 31, 2017Assignee: COMBA TELECOM SYSTEM (CHINA) LTD.Inventors: Shan qiu Sun, Feifei Jia, Peitao Liu
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Patent number: 9160583Abstract: The present invention describes a RF signal control method and device that adjusts the first down-converter gain attenuation and uses the adjusted first down-converter gain attenuation to change the RF signal. The RF signal control method and device also uses a determined linear filter parameter to perform linearity improvement on the digital signal after the RF signal goes through a down-converter and analog-to-digital converter. The RF signal control method and device use an increased up-converter gain attenuation value to correct the RF input signal after digital pre-distortion operation, so that the adjusted and/or improved signals after power amplification have better quality than the RF signal with just a simple analog-to-digital converter and clipping equipment. Thus, the current application improves the linearity effect of digital pre-distortion operation and the dynamic effect of the power amplifier operation, thereby promoting the coverage effect of the RF output signal.Type: GrantFiled: April 12, 2013Date of Patent: October 13, 2015Assignee: Comba Telecom Systems (China) LtdInventors: Zhansheng Zhang, Shuanlong Pan
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Patent number: 9160378Abstract: The present invention describes a RF signal control method and device that changes the gain attenuation in real time and uses the changed gain attenuation to adjust the RF input signal. The RF signal control method and device also uses determined linear filter parameters for linearity improvement on the digital signal that results from a down-conversion and analog-to-digital converter on the RF input signal. The adjusted and improved signal is output after a digital pre-distortion and power amplification operation. In comparison with existing technologies, the adjusted gain attenuation is used to make adjustment on the RF input signal and improve linearity the RF input signal such that the resulting RF signal has better quality. Thus, the current application improves the linearity effect of a digital pre-distorter and the dynamic effect of a power amplifier for the RF signal, thereby enhancing coverage of the RF output signal.Type: GrantFiled: April 12, 2013Date of Patent: October 13, 2015Assignee: Comba Telecom Systems (China) LtdInventors: Zhansheng Zhang, Shuanlong Pan
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Publication number: 20150288065Abstract: A multi-frequency array antenna, includes a reflective metal plate, a low-frequency radiation column element which is arranged on the reflective metal plate and operating in a first frequency band range, and a high-frequency radiation column element operating in a second frequency band range. The low-frequency radiation column element comprises several low-frequency radiation units arranged at an equal first distance in the axial direction of a first reference axis. The high-frequency radiation column element comprises several high-frequency radiation units arranged at an equal second distance in the axial direction of the first reference axis. The first distance is 2.5 times the second distance. At least one of the low-frequency radiation units is nested with one high-frequency radiation unit locationally corresponding thereto, and at least one of the low-frequency radiation units is axially located between two adjacent high-frequency radiation units close to the low-frequency radiation unit.Type: ApplicationFiled: October 24, 2013Publication date: October 8, 2015Applicant: COMBA TELECOM SYSTEMS (CHINA) LTD.Inventors: Peitao Liu, Feifei Jia, Shanqiu Sun
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Publication number: 20150264698Abstract: A resource allocation method and base station. The resource allocation method comprises: within a current scheduling period, determining priorities of users in a cell for sub-carriers in available frequency resources, and among the available frequency resources of the cell, allocating a corresponding available frequency resource for each user in the cell according to the priorities of all users for the sub-carriers, so that the frequency resources that can be used by the edge users cover all available frequency ranges of the cell. Therefore, when frequency selectivity fading occurs in the channel, a decline in communication quality caused by allocating carrier resources for the edge users in the limited frequency resources is avoided, the probability that the edge users use deeply fading frequency resources is reduced, and interruption in the communication process is decreased, thereby improving system throughput.Type: ApplicationFiled: August 8, 2013Publication date: September 17, 2015Applicant: COMBA TELECOM SYSTEMS (CHINA) LTD.Inventor: Hanguang Wu
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Patent number: 9065381Abstract: An electrically adjustable antenna control system includes a controller, an actuation mechanism controlled by the controller, and a feedback loop connected to both of the controller and actuation mechanism. Herein, the controller includes a control board and its imbedded program. The actuation mechanism includes a DC geared motor controlled by the control board and embedded program and an electrically adjustable antenna phase shifter driven by the geared motor. The feedback loop has a travel plate electrically coupled to both of the control board and DC geared motor and a counter device installed on the geared motor. The present invention also provides an electrically adjustable antenna control method realized by the above-mentioned electrically adjustable antenna control system.Type: GrantFiled: October 28, 2011Date of Patent: June 23, 2015Assignee: Comba Telecom System (China) LtdInventors: Yingyu Liu, Zefeng Ma
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Publication number: 20150102971Abstract: A bi-polarized broadband annular radiation unit, for being installed on a metal reflective plate thus constituting a communication antenna and defining an annular construction by two pairs of orthogonally polarized dipoles, includes two pairs of orthogonally polarized dipoles, each dipole comprising two symmetrical unit arms of a single line sheet shape, one end of a unit arm being facing to a corresponding end of the other unit arm, and a distal end of each unit arm of at least one pair of dipoles is provided with a loading line; and a plurality of balun arms feeding power to and supporting respective dipoles, each balun arm including two parallel balun lines, and the top ends of the two balun lines being connected with corresponding ends of the two unit arms of a corresponding dipole. Each unit arm and the balun line and/or loading line connected to the same unit arm are made by sheet metal stamping forming process or casting process.Type: ApplicationFiled: February 19, 2013Publication date: April 16, 2015Applicant: Comba Telecom System (China) LtdInventors: Peitao Liu, Qinyuan Wang, Shan Qiu Sun, Liwen Huang, Yingchun Zhang, Qing Tang
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Patent number: 8866688Abstract: A planar oscillator is provided includes an oscillator portion formed by four oscillator arms, the four oscillator arms defining two orthogonal half-wave oscillators, each oscillator arm being of a square and these oscillator arms being arranged in a square configuration, each oscillator arm having a feeding terminal defined at a corner thereof facing another oscillator arm; a connective portion connected among these oscillator arms so that these arms are connected with each other; and a medium base plate for printing the oscillator portion and connective portion thereon. In addition, a plurality of through holes is defined in the medium base plate. The antenna made according to the invention is simple and compact in construction and good in performance. In addition, the antenna is easy to be manufactured and assembled. Moreover, the antenna of the invention benefits from wide bandwidth, high gain and cross polarization ratio, and excellent isolation.Type: GrantFiled: December 17, 2009Date of Patent: October 21, 2014Assignee: Comba Telecom System (China) Ltd.Inventor: Liangtao Liu
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Publication number: 20140233676Abstract: The present invention describes a RF signal control method and device that changes the gain attenuation in real time and uses the changed gain attenuation to adjust the RF input signal. The RF signal control method and device also uses determined linear filter parameters for linearity improvement on the digital signal that results from a down-conversion and analog-to-digital converter on the RF input signal. The adjusted and improved signal is output after a digital pre-distortion and power amplification operation. In comparison with existing technologies, the adjusted gain attenuation is used to make adjustment on the RF input signal and improve linearity the RF input signal such that the resulting RF signal has better quality. Thus, the current application improves the linearity effect of a digital pre-distorter and the dynamic effect of a power amplifier for the RF signal, thereby enhancing coverage of the RF output signal.Type: ApplicationFiled: April 12, 2013Publication date: August 21, 2014Applicant: Comba Telecom Systems (China) LtdInventors: Zhansheng Zhang, Shuanlong Pan