Patent application number | Description | Published |
20110175789 | RF MODULE AND ANTENNA SYSTEMS - Architectures and implementations of a transceiver system for wireless communications are presented, the system including one or more antennas supporting a single frequency band or multiple frequency bands, a transmit circuit, a receive circuit, and an isolation circuit that is coupled to the one or more antennas and the transmit and receive circuits and provides adequate isolation between the transmit circuit and the receive circuit. | 07-21-2011 |
20110210787 | SWITCHLESS BAND SEPARATION FOR TRANSCEIVERS - A system includes a plurality of band pass filters to pass signals in separated frequency bands to or from an antenna. A matching network provides characteristic impedances. The system is designed such that the configuration of the matching network and BPFs provides high impedance to the band pass filters for those routing paths other than the band pass path as these routing paths do not transmit or receive the signals at this particular pass band. The system is further designed such that the configuration of the matching network and BPFs provides minimal insertion loss for the band pass path of for transmission and receipt of signals at this particular pass band, where each routing path has a corresponding pass band. The matching network is for coupling to an amplifier, when frequency separation is needed at the output of the amplifier to the BPFs. In one embodiment an impedance network tunes the impedance by using varying length transmission lines. | 09-01-2011 |
20110227795 | ANTENNA STRUCTURES - Antenna structures and configurations which incorporate alignment keys and support structures which mate Composite Right and Left Handed (CRLH) metamaterial (MTM) structures formed on two or more substrates. | 09-22-2011 |
20110267244 | MULTI-FUNCTIONAL CRLH ANTENNA DEVICE - This application relates to a multi-functional Composite Right and Left Handed CRLH antenna device. A conductive element of a wireless device is incorporated into the antenna structure for reuse. In one embodiment a peripheral feature, such as a key dome, is incorporated into the antenna device. In this way, the antenna structure includes portions which are multi-functional. | 11-03-2011 |
20110273348 | METAMATERIAL ANTENNA DEVICE WITH MECHANICAL CONNECTION - A wireless device incorporating an antenna made of Composite Right Left Hand (CRLH) structures, having a connection element coupling a portion of the antenna to a ground electrode. In some embodiments a wireless device has one or more mechanical connection units made of electrically conductive materials to provide both mechanical engagement and electrical conduction for the antenna devices. | 11-10-2011 |
20110273353 | HYBRID METAMATERIAL ANTENNA STRUCTURES - A wireless device having a CRLH antenna structure incorporates a meander line at the feed and adds a three dimensional conductive structure to shift a meander mode resonance frequency. | 11-10-2011 |
20120001804 | CRLH ANTENNA STRUCTURES - A variety of configurations for a CRLH structured antenna in a wireless device are presented. An antenna having portions of the CRLH structure positioned on different layers provides an elevated structure. An antenna is presented having a double folded antenna structure, wherein a cell patch includes extensions on multiple layers of a substrate. | 01-05-2012 |
20120001826 | ENHANCED METAMATERIAL ANTENNA STRUCTURES - A wireless device having an antenna structure incorporates a conductive structure to extend an effective length of at least one component of the antenna structure. The enhanced 3-D conductive structure is applicable to a variety of antenna types, including, but not limited to, a CRLH structured antenna. | 01-05-2012 |
20130050029 | NON-PLANAR METAMATERIAL ANTENNA STRUCTURES - Antennas for wireless communications based on metamaterial (MTM) structures to arrange one or more antenna sections of an MTM antenna away from one or more other antenna sections of the same MTM antenna so that the antenna sections of the MTM antenna are spatially distributed in a non-planar configuration to provide a compact structure adapted to fit to an allocated space or volume of a wireless communication device, such as a portable wireless communication device. | 02-28-2013 |
20130147673 | METAMATERIAL LOADED ANTENNA STRUCTURES - Techniques and devices based on antenna structures with a MTM loading element. | 06-13-2013 |
20140022133 | SINGLE-LAYER METALIZATION AND VIA-LESS METAMATERIAL STRUCTURES - Techniques and apparatus based on metamaterial structures provided for antenna and transmission line devices, including single-layer metallization and via-less metamaterial structures. | 01-23-2014 |
Patent application number | Description | Published |
20090180491 | System and Method for Bandwidth Management in Ethernet-Based Fiber Optic TDMA Networks - A system and method for management of bandwidth in a fiber optic, ethernet-based, TDMA communications system. A request/grant process is used to control the use of upstream bandwidth. A sense of time must therefore be shared by a headend and remote end-user devices. The invention provides for a gigabit media-independent interface in a media access controller to detect start-of-frame delimiters in incoming data. This allows for synchronization of a headend and end-user devices. The invention also allows for phase locking a transmit bit rate, at a headend, to the headend's clock. Transmitted data can the be used downstream to derive a local clock. Synchronization can also be maintained by the use of synchronization bytes in MPEG frames and/or variable length frames. Efficient bandwidth usage can also be facilitated by the use of maximum data units in allocating bandwidth in unsolicited grants, and by allowing flexible fragmentation and/or prioritization of internet protocol (IP) packets. | 07-16-2009 |
20100020683 | System and Method for Combining Requests for Data Bandwith by a Data Source for Transmission of Data Over a Communication Medium - A method and system for combining requests for data bandwidth by a data source for transmission of data over a communication medium is provided. A central node receives one or more bandwidths requests from one or more data sources via wireless communication. A scheduler then combines one or more bandwidths requests from the same data source to create a single data burst bandwidth. The central node then grants the data burst bandwidth to the appropriate data source via a communications medium. | 01-28-2010 |
20100023988 | System And Method For Suppressing Silence In Voice Traffic Over A Wireless Communication Medium - A method and system for increasing the efficiency of providing bandwidth for voice traffic to a data provider via communication mediums is provided. This is generally accomplished by not transmitting any data during the silence periods and playing out background noise (i.e., comfort noise) at the other end, to obtain significant bandwidth savings. | 01-28-2010 |
20100214907 | Method for Synchronizing Voice Traffic With Minimum Latency in a Communications Network - A supervisory communications node monitors and controls communications with a plurality of remote devices throughout a widely distributed network. A method is provided to convey and maintain information used to synchronize the packetization and burst operations within the network. During session setup, jitter constraints indirectly are used to explicitly communicate a synchronization timing reference. The timing reference is set at the beginning of a phase/period boundary used to service the session. In an embodiment, the announcement of the first grant is used as an explicit indication of the synchronization timing reference value. In another embodiment, the synchronization timing reference value is inferred if a remote device receives contiguous voice grants meeting certain conditions. In an embodiment implementing periodic scheduling, the actual arrival of the first grant is used to infer the synchronization timing reference value. In an embodiment, the present invention enables the synchronization timing reference value and/or the periodicity to be modified if network conditions indicate that packetization and burst operations are out-of-synchronization. | 08-26-2010 |
20100284420 | Apparatuses and Method to Utilize Multiple Protocols in a Communication System - A two way communication system is adapted for compatible inter-operation of a plurality of devices operating in accordance with a plurality of protocols. The communication system includes a first group of one or more remote devices that interface with a local host in accordance with a first protocol and a second group of one or more remote devices that interface with the local host in accordance with a second protocol. The local host includes a protocol processor that identifies transmissions from the first and second groups of remote devices and routes transmissions from the first group of remote devices to a first processor operating in accordance with the first protocol and also routes transmissions from the second group of remote devices to a second processor operating in accordance with the second protocol. | 11-11-2010 |
20110149895 | System for a Generalized Packet Header Suppression Mechanism Using a Wireless Communications Medium - A system for reducing the bandwidth required to transmit a data packet via a wireless network is provided. In an embodiment, the system is configured for generating a packet to be transmitted via the wireless network. Once a packet is generated, a packet type of the packet to be transmitted via the wireless network is determined. Based on the packet type, a suppression rule is selectively applied to the packet to generate a suppressed packet. Applying the suppression rule includes suppressing at least a portion of the header of the packet and adding a descriptor associated with the header suppression rule to the packet. The system is configured to conclude with the transmittal of the suppressed packet via the wireless network. | 06-23-2011 |
20110150499 | System, Method, and Computer Program Product for Fiber Access - A system, method, and computer program product for synchronizing time between a centralized controller device and at least one subscriber device on a fiber access network. The control layer of a network device is expanded, and additional messaging control is added via the transmission of data frames. The expansion prevents reliance on a physical layer signal. The time synchronization also allows a time stamp to be incorporated into a message. Thus, bandwidth is not wasted by simply transmitting a time stamp by itself. In an embodiment, the centralized controller device measures the time difference between the time at which a particular ranging request is transmitted and the time at which the particular ranging request is received. The time difference represents the time adjustment value for the particular subscriber device and allows the device to synchronize its time with that of the centralized controller device. | 06-23-2011 |
Patent application number | Description | Published |
20100104903 | Power Plant With Membrane Water Gas Shift Reactor System - The fuel processing system of the present invention supplies a flow of H2-rich reformate to a water gas shift membrane reactor, comprising a water gas shift reaction region and a permeate region, separated by an H2-separation membrane H2 formed over a catalyst in the reaction region selectively passes through the H2-separation membrane to the permeate region for delivery to a use point (such as the fuel cell of a fuel cell power plant) A sweep gas, preferably steam, removes the H2 from the permeate region The direction of sweep gas flow relative to the reformate flow is controlled for H2-separation performance and is used to determine the loading of the catalyst in the reaction region Coolant, thermal and/or pressure control subsystems of the fuel cell power plant may be integrated with the fuel processing system | 04-29-2010 |
20110020727 | Protective and Precipitation Layers for PEM Fuel Cell - A membrane electrode assembly is provided which includes an anode; a cathode; a membrane between the anode and the cathode; and a protective layer between the membrane and at least one electrode of the anode and the cathode, the protective layer having a layer of ionomer material containing a catalyst, the layer having a porosity of between 0 and 10%, an ionomer content of between 50 and 80% vol., a catalyst content of between 10 and 50% vol., and an electrical connectivity between catalyst particles of between 35 and 75%. A configuration using a precipitation layer to prevent migration of catalyst ions is also provided. | 01-27-2011 |
20130011770 | MODIFICATION TO STAMPABLE FLOWFIELDS TO IMPROVE FLOW DISTRIBUTION IN THE CHANNELS OF PEM FUEL CELLS - A fuel cell ( | 01-10-2013 |
20130078541 | JET FUEL BASED HIGH PRESSURE SOLID OXIDE FUEL CELL SYSTEM - A power system for an aircraft includes a solid oxide fuel cell system which generates electric power for the aircraft and an exhaust stream; and a heat exchanger for transferring heat from the exhaust stream of the solid oxide fuel cell to a heat requiring system or component of the aircraft. The heat can be transferred to fuel for the primary engine of the aircraft. Further, the same fuel can be used to power both the primary engine and the SOFC. A heat exchanger is positioned to cool reformate before feeding to the fuel cell. SOFC exhaust is treated and used as inerting gas. Finally, oxidant to the SOFC can be obtained from the aircraft cabin, or exterior, or both. | 03-28-2013 |
20130280642 | POROUS NANO-FIBER MATS TO REINFORCE PROTON CONDUCTING MEMBRANES FOR PEM APPLICATIONS - A method of manufacturing a proton conducting fuel cell composite membrane includes the step of electrospinning a non-charged polymeric material, such as PVDF and PSF, into fiber mats. The fibers are fused to one another to provide a welded porous mat. The welded porous mat is filled with proton conducting electrolyte, such as PFSA polymer, to generate a proton conducting composite membrane. The resulting proton conducting fuel cell membrane comprises a randomly oriented, three dimensional interlinked fiber lattice structure filled with proton conducting electrolyte, such as PFSA polymer. | 10-24-2013 |
20130281555 | PROTON EXCHANGE MATERIAL AND METHOD THEREFOR - A proton exchange material includes perfluorinated carbon backbone chains and side chains extending off of the perfluorinated carbon backbone chains. The perfluorinated side chains include cross-link chains that have multiple sulfonimide groups, —SO | 10-24-2013 |
20130288082 | WARMING FEATURE FOR AIRCRAFT FUEL CELLS - A system and method for warming a fuel cell on an aircraft, the system includes at least one fuel cell. The fuel cell includes an anode and a cathode for creating thermal and electrical energy. A temperature sensor measures a first temperature of the fuel cell. A control unit is coupled to the temperature sensor. The control unit increases the first temperature to a second temperature in response to the first temperature being at least equal to a selected temperature threshold. Increasing of the first temperature is indicative of the control unit operating in a warming mode. The second temperature is higher than the selected temperature threshold. | 10-31-2013 |
20140356757 | FUEL CELL ELECTRODE WITH GRADIENT CATALYST STRUCTURE - An example of a stable electrode structure is to use a gradient electrode that employs large platinum particle catalyst in the close proximity to the membrane supported on conventional carbon and small platinum particles in the section of the electrode closer to a GDL supported on a stabilized carbon. Some electrode parameters that contribute to electrode performance stability and reduced change in ECA are platinum-to-carbon ratio, size of platinum particles in various parts of the electrode, use of other stable catalysts instead of large particle size platinum (alloy, etc), depth of each gradient sublayer. Another example of a stable electrode structure is to use a mixture of platinum particle sizes on a carbon support, such as using platinum particles that may be 6 nanometers and 3 nanometers. A conductive support is typically one or more of the carbon blacks. | 12-04-2014 |
20150051065 | METHOD FOR DISPERSING PARTICLES IN PERFLUORINATED POLYMER IONOMER - A method for preparing dispersing particles in perfluorinated polymer ionomer includes combining particles and a perfluorinated ionomer precursor in a mixture, and converting the perfluorinated ionomer precursor to a perfluorinated proton-conducting ionomer in the presence of the particles. | 02-19-2015 |
Patent application number | Description | Published |
20120273997 | Process for Making a Micro-Textured Web - Processes for making micro-textured webs. The process comprises providing a precursor web; providing a pair of mated forming structures, including a first forming structure and a second forming structure, wherein at least the first forming structure comprises voids, and wherein at least the second forming structure comprises protrusions; and moving the web through a deformation zone of the mated forming structures, wherein the voids of the first forming structure engage with the protrusions of the second forming structure at an engagement position. Discrete three-dimensional elements are formed in the web as the protrusions on the second forming structure engage with the voids on the first mating structure. At least one protrusion has center-to-center spacings of less than about 800 microns with at least three of its adjacent protrusions. | 11-01-2012 |
20120276239 | Apparatus for Making a Micro-Textured Web - Apparatus for making micro-textured webs. The apparatus comprises a pair of mated forming structures having a first forming structure, a second forming structure, and a deformation zone; wherein at least the first forming structure comprises voids, and wherein at least the second forming structure comprises protrusions wherein at least one protrusion has center-to-center spacings of less than about 800 microns with at least three of its adjacent protrusions. The voids of the first forming structure are engagable with the protrusions of the second forming structure at an engagement position to form a micro-textured web. In another embodiment, the apparatus comprises a pair of counter-rotating rollers wherein the first roller comprises grooves having a length, wherein the length of the grooves are oriented at an angle different from the machine direction. | 11-01-2012 |
20130006587 | Systems and Methods for Modeling Compliant Parts - Included are systems and methods for modeling compliant parts. Some of the systems and/or methods include creating a 3-dimensional simulation of a product that includes an outer part and an inner part, determining a deformation characteristic of the product, and simulating an interaction of the inner part with the outer part. Similarly, in some of the systems and/or methods a characteristic of interaction may be measured from the interaction, a determination may be made regarding whether the characteristic of interaction meets a predetermined threshold. In some of the systems and/or methods, in response to determining that the characteristic of interaction meets the predetermined threshold, an output may be sent indicating product design acceptability. In response to determining that the characteristic of interaction does not meet the predetermined threshold, the 3-dimensional simulation may be iteratively altered until the characteristic of interaction meets the predetermined threshold. | 01-03-2013 |