Patent application number | Description | Published |
20090046028 | ANTENNA WITH VOLUME OF MATERIAL - An antenna includes one or more antenna elements and a volume of material contained at least partly within a volume of the one or more antenna elements. The volume of material has at least one electromagnetic property that is different from free space. The volume of material may include dielectric material and/or ferrite material. The antenna elements may be isolated magnetic dipole (IMD) antenna elements. The electromagnetic property may be permeability and/or permittivity. | 02-19-2009 |
20090096693 | LOW FREQUENCY ANTENNA - An antenna includes a core formed of a high-permeability material and a coil wire wrapped around at least a part of the core. In one embodiment, the high-permeability material includes ferrite material. | 04-16-2009 |
20090231206 | LOW COST INTEGRATED ANTENNA ASSEMBLY AND METHODS FOR FABRICATION THEREOF - A conductive layer is applied to a thermoformed plastic component to form an integrated antenna assembly. The conductive layer is on a flexible layer and adhered or attached to the rigid thermoformed plastic carrier. Features are designed into the thermoformed plastic carrier to provide electrical contacts from the conductive layer to the circuit board of the communication device and to mechanically attach the carrier to the circuit board. Multiple conductive layers can be applied to a multi-layered thermoformed structure to form a multi-antenna assembly. | 09-17-2009 |
20090243951 | MULTI-LAYER ISOLATED MAGNETIC DIPOLE ANTENNA - A multi-layer isolated magnetic dipole (IMD) with improved bandwidth and efficiency characteristics to be used in wireless communications and other applicable systems. The multi-layer IMD antenna comprises an IMD element positioned above a ground plane, a conductive element positioned above a ground plane and coupled to the first portion having one or more slot regions being defined between the IMD element and the conductive element and one or more capacitive elements positioned across the one or more slot regions. The range of frequencies covered to be determined by the shape, size, and number of elements in the physical configuration of the components. | 10-01-2009 |
20090278756 | ACTIVE TUNED LOOP-COUPLED ANTENNA - An active tuned loop-coupled antenna capable of optimizing performance over incremental bandwidths and capable of tuning over a large total bandwidth to be used in wireless communications. The active loop is capable of serving as the radiating element or a radiating element can be coupled to this active loop. Multiple active tuned loops can be coupled together to extend the total bandwidth of the antenna. Active components can be incorporated into the antenna structure to provide yet additional extension of the bandwidth along with increased optimization of antenna performance over the frequency range of the antenna. | 11-12-2009 |
20100283691 | SPATIAL FILTER FOR NEAR FIELD MODIFICATION IN A WIRELESS COMMUNICATION DEVICE - A spatial filter is developed for specific absorption rate (SAR) reduction in a wireless device. A conductive element is designed to modify the near field distribution of an antenna operating in a wireless device. This reduces SAR while minimizing degradation of antenna efficiency at one or several frequency bands that the antenna is designed to operate over. Lumped reactance can be designed into the conductive element to generate low pass, band pass, and/or high pass frequency characteristics. Distributed reactance can be designed into the conductive element to replace or to work in conjunction with the lumped reactance. Active components can be designed into the conductive element to provide dynamic tuning of the frequency response of the conductive element. | 11-11-2010 |
20110001676 | ACTIVE TUNED LOOP-COUPLED ANTENNA - An active tuned loop-coupled antenna capable of optimizing performance over incremental bandwidths and capable of tuning over a large total bandwidth to be used in wireless communications. The active loop is capable of serving as the radiating element or a radiating element can be coupled to this active loop. Multiple active tuned loops can be coupled together to extend the total bandwidth of the antenna. Active components can be incorporated into the antenna structure to provide yet additional extension of the bandwidth along with increased optimization of antenna performance over the frequency range of the antenna. | 01-06-2011 |
20110032165 | ANTENNA WITH MULTIPLE COUPLED REGIONS - An antenna having a driven element coupled to multiple additional elements to resonate at multiple frequencies. A magnetic dipole mode is generated by coupling a driven element to a second element, and additional resonances are generated by coupling additional elements to either or both of the driven or second element. One or multiple active components can be coupled to one or more of the coupled elements to provide dynamic tuning of the coupled or driven elements. | 02-10-2011 |
20110133905 | SYSTEM AND METHOD OF IDENTIFYING TAGGED ARTICLES - An automatic data collection system tracks articles by providing a robust electromagnetic (EM) field within an enclosure in which the articles are stored. Respective data carriers, such as RFID tags, attached to each article respond to the electromagnetic field by transmitting unique data identified with each article. Where the frequency of the EM field coupled to the enclosure differs from the natural resonance frequency of the enclosure, the placement of a probe to couple energy to the enclosure is selected to have the reflected phase of the EM energy from walls equal at the probe location thereby producing a robust EM field to activate and/or detect data carriers. | 06-09-2011 |
20110254748 | ANTENNA AND METHOD FOR STEERING ANTENNA BEAM DIRECTION - An antenna comprising an IMD element, and one or more parasitic and active tuning elements is disclosed. The IMD element, when used in combination with the active tuning and parasitic elements, allows antenna operation at multiple resonant frequencies. In addition, the direction of antenna radiation pattern may be arbitrarily rotated in accordance with the parasitic and active tuning elements. | 10-20-2011 |
20120206303 | ANTENNA SYSTEM COUPLED TO AN EXTERNAL DEVICE - An antenna system is integrated into a cover or accessory and adapted to couple to an antenna in a host device to improve transmission and reception of signals. The antenna system can be passive or active, with the active antenna system designed to amplify coupled signals on the integrated antenna elements in the cover or accessory. Single or multiple frequency bands can be improved with the integrated antenna system, and multiple antennas in the host device can be coupled to and improved. The antenna system can couple to the existing antennas in the host device by capacitive coupling, i.e. no physical contact required, or a connector can be designed into the cover or accessory containing the integrated antenna system that makes contact to electrical ground of the host device or power supply signals or other control signals. | 08-16-2012 |
20130076571 | N-SHOT ANTENNA ASSEMBLY AND RELATED MANUFACTURING METHOD - An antenna module and a manufacturing method for the same are disclosed. With the miniaturization trend for mobile communication terminals, the invention can achieve the miniaturization of antenna modules and facilitate the design of the antenna. The SMD as a matching component for given resonance frequency and impedance matching of the antenna is mounted on the antenna module to make the antenna module compact, and functions as a matching circuit for impedance matching to facilitate the design of mobile devices. | 03-28-2013 |
20130093634 | MULTI-BAND MIMO ANTENNA - A multi-band antenna system for MIMO applications is adapted to provide high isolation between antennas across a wide range of frequencies. Multiple Isolated Magnetic Dipole (IMD) antennas are co-located and connected with a feed network that can include switches that adjust phase length for transmission lines connecting the antennas. Filtering is integrated into the feed network to improve rejection of unwanted frequencies. Filtering can also be implemented on the antenna structure. Either one or multi-port antennas can be used. | 04-18-2013 |
20130093635 | MODAL ADAPTIVE ANTENNA USING PILOT SIGNAL IN CDMA MOBILE COMMUNICATION SYSTEM AND RELATED SIGNAL RECEIVING METHOD - One or more input signals are used to generate a Pseudo noise generator and re-inject the signal to obtain a more efficient method of control of a receiver using adaptive antenna array technology. The antenna array automatically adjusts its direction to the optimum using information obtained from the input signal by the receiving antenna elements. The input signals may be stored in memory for retrieval, comparison and then used to optimize reception. The difference between the outputs of the memorized signals and the reference signal is used as an error signal. | 04-18-2013 |
20130109309 | MULTI-FREQUENCY NFC ANTENNA | 05-02-2013 |
20130109327 | ANTENNAS CONFIGURED FOR SELF-LEARNING ALGORITHMS & RELATED METHODS | 05-02-2013 |
20130109333 | METHOD AND SYSTEM FOR SWITCHED COMBINED DIVERSITY WITH A MODAL ANTENNA | 05-02-2013 |
20130109449 | ANTENNA SYSTEM OPTIMIZED FOR SISO AND MIMO OPERATION | 05-02-2013 |
20130113667 | ANTENNA AND METHOD FOR STEERING ANTENNA BEAM DIRECTION - An antenna comprising an IMD element and one or more parasitic and active tuning elements is disclosed. The IMD element, when used in combination with the active tuning and parasitic elements, allows antenna operation at multiple resonant frequencies. In addition, the direction of antenna radiation pattern may be arbitrarily rotated in accordance with the parasitic and active tuning elements. | 05-09-2013 |
20130120200 | MULTI LEVELED ACTIVE ANTENNA CONFIGURATION FOR MULTIBAND MIMO LTE SYSTEM - An active antenna system and algorithm is described that provides for dynamic tuning and optimization of antenna system parameters for a MIMO system where correlation and isolation between antennas in the system are dynamically altered to provide for greater throughput. As one or multiple antennas are loaded or de-tuned due to environmental changes, corrections to correlation and/or isolation are made by selecting the optimal antenna radiation pattern and by adjusting electrical length and/or reactive loading of transmission lines connecting the antennas. Multiple Isolated Magnetic Dipole (IMD) antennas are co-located and connected with a feed network that can include switches that adjust phase length for transmission lines connecting the antennas. Filtering is integrated into the feed network to improve rejection of unwanted frequencies. Filtering can also be implemented on the antenna structure. | 05-16-2013 |
20130122836 | PRE-OPTIMIZATION OF TRANSMIT CIRCUITS - An impedance tuning and optimization technique is described wherein an impedance interface is dynamically tuned prior to applying transmit power to the circuit. A coupled signal injected into the antenna port is used to optimize the tuning state of a tuning component such that the impedance properties of the circuit are optimized prior to application of transmit power. A coupled or injected signal at an alternate frequency band can be utilized to determine tuning state or parameters at the frequency of interest by first tuning at the frequency of the coupled or injected signal and then accessing a data base containing information that relates tuning parameters across multiple frequency bands for various levels of antenna de-tuning. A time-savings is realized when the tuning circuit is optimized prior to activation or use of the transmit/receive path. | 05-16-2013 |
20130127670 | Automatic Signal, SAR, and HAC Adjustment with Modal Antenna Using Proximity Sensors or Pre-defined Conditions - A modal adaptive antenna system that dynamically samples proximity sensors or other sensors to determine the use case for the wireless device and then adjust the antenna radiating mode to optimize communication link performance. The modal adaptive antenna system is capable of modifying the antenna radiation pattern to improve communication link quality along with near-field parameters such as SAR and HAC. An algorithm and look-up table containing pre-measured electrical parameters to include TRP, TIS, and SAR are developed and integrated with hardware which includes an antenna and active components to dynamically modify the radiation pattern of the antenna as well as proximity sensors and or other sensing devices. | 05-23-2013 |
20130135162 | ANTENNA SYSTEM FOR INTERFERENCE SUPRESSION - An antenna system is capable of optimizing communication link quality with one or multiple transceivers while suppressing one or multiple interference sources. The antenna provides a low cost, physically small multi-element antenna system capable of being integrated into mobile devices and designed to form nulls in the radiation pattern to reduce interference from unwanted interferers. The antenna system operates in both line of sight and high multi-path environments by adjusting the radiation pattern and sampling the received signal strength to reduce signal levels from interferers while monitoring and optimizing receive signal strength from desired sources. | 05-30-2013 |
20130135171 | ACTIVE SELF-RECONFIGURABLE MULTIMODE ANTENNA SYSTEM - A self-reconfigurable multimode antenna system where loading conditions of sensors are analyzed and used to generate control signals to dynamically reconfigure an antenna for improved performance. One or multiple sensors can be coupled to the antenna to dynamically change the radiating structure. One or multiple sensors can be coupled to the input or matching section of the antenna to improve or alter the impedance match of the antenna. An algorithm to relate loading effects of sensors to dynamically adjust the antenna is described. | 05-30-2013 |
20130141292 | MULTI-ANTENNA MODULE CONTAINING ACTIVE ELEMENTS AND CONTROL CIRCUITS FOR WIRELESS SYSTEMS - An antenna system is provided for use in wireless communication, the antenna system is contained in a modular structure. The antenna system includes a plurality of co-located antennas, including at least one active modal antenna, each of the antennas being adapted for operation at a distinct frequency band. The antenna system further includes an active tuning module for tuning a frequency response of the co-located antennas. | 06-06-2013 |
20130141293 | SUPERIMPOSED MULTIMODE ANTENNA FOR ENHANCED SYSTEM FILTERING - In a typical system a combination of filters (BAW, SAW, etc) and an antenna are configured to achieve frequency filtering effect and efficient transmission and reception of communication signals. Wireless communication systems require specific bandwidth and out-of-band rejection; typically this metric is characterized in frequency roll-off in units of dB/MHz. This number is distributed between the antenna and filter, with the antenna contributing little to date to the filtering effect. Loss and cost penalties are incurred when multi-mode systems are designed which require additional rejection from the filter elements. Described here is a method of designing antennas to reduce the amount of rejection and complexity from the filter system. A superposition of a symmetrical frequency response from the antenna structure coupled with a non-symmetrical frequency response from a counterpoise structure generates increased rejection of out-of-band components. | 06-06-2013 |
20130147672 | MODAL ANTENNA WITH CORRELATION MANAGEMENT FOR DIVERSITY APPLICATIONS - Antenna systems comprising modal antennas for use in diversity and similar schemes include a modal antenna capable of multiple antenna modes wherein a distinct radiation pattern exists for each antenna mode, and a control signal for directing variation of the antenna modes. Methods for designing modal diversity antennas are further disclosed. | 06-13-2013 |
20130149957 | ADAPTIVE REPEATER FOR IMPROVED COMMUNICATION SYSTEM PERFORMANCE - A dynamically tuned repeater system for improved communication system performance is disclosed. The repeater circuit consists of power amplifiers, low noise amplifiers, filters, switches and antennas along with tuning circuits integrated and controlled to provide an optimized system for RF transmission improvement. Dynamic tuning provides the ability to maintain optimized system performance as required by communication link characteristics. Inputs from proximity sensors are used to further optimize system performance. The repeater topology is capable of transmission and reception enhancement at a multitude of frequency bands. | 06-13-2013 |
20130150040 | POWER MANAGEMENT & CONTROL SYNCHRONIZATION WITHIN IN A WIRELESS NETWORK USING MODAL ANTENNAS AND RELATED METHODS - A means of power management and control via a reverse link of a CDMA or LTE network is disclosed. The protocol is set to superimpose itself in an agnostic way to the power management as one more layer of freedom is added. The adjustment depending on the power control is then derived by mismatch if too much power or antenna tuning to enhance the power. This is also following a table in the device that will adjust ECC in case of a MIMO transmission such as LTE as well as SAR. This will generate also a mean of a soft-handoff and load control on the base station. | 06-13-2013 |
20130154889 | ACTIVE FRONT END MODULE USING A MODAL ANTENNA APPROACH FOR IMPROVED COMMUNICATION SYSTEM PERFORMANCE - This application describes a dynamically tuned front end module using a modal antenna approach for improved communication system performance. The front end module consists of power amplifiers, filters, switches and antennas along with tuning circuits integrated and controlled to provide an optimized system for RF transmission. Dynamic tuning provides the ability to maintain optimized system performance for a wide variety of use cases and environments that the wireless device is operated in. Several transmission modes are accessed in an algorithm to optimize the performance of multiple wireless devices in a cellular system, to include a power conservation mode, emergency transmission mode, and cell capacity optimization mode. Dynamic adjustment of correlation and isolation between multiple antennas is a benefit provided by this front end topology. | 06-20-2013 |
20130187818 | ANTENNAS INTEGRATED IN SHIELD CAN ASSEMBLY - Antennas are integrated into shield cans by etching one or more slots from a body portion thereof. Multiple antennas can be grouped onto a single shield can to provide both cost and space saving features. Antenna feed and ground connections are positioned on the circuit board and connections to the antenna are made when the shield can connects to the circuit board assembly. | 07-25-2013 |
20130189928 | MODAL COGNITIVE DIVERSITY FOR MOBILE COMMUNICATION MIMO SYSTEMS - A system and method for optimizing the performance for MIMO are provided, the system including multiple antennas, including at least one modal antenna, wherein each of the at least one modal antenna has multiple modes corresponding to multiple radiation patterns, and a processor coupled to the multiple antennas and configured to select a mode among the multiple modes to optimize signal quality for each time interval based on a CQI by considering envelop correlation effects. | 07-25-2013 |
20130194133 | GPS LOCATION SYSTEM USING MODAL ANTENNA - A modal antenna is implemented to provide a variable radiation pattern for improved GPS (Global Positioning System) signal reception. A multitude of antenna radiation patterns generated from a modal antenna provide the capability to optimally acquire GPS signals across a wide range of angles of arrival. Minimum radiation pattern roll-off is observed from the composite pattern generated from the multiple patterns. An algorithm is described that reduces the acquisition time for a location fix for cold and hot start conditions. | 08-01-2013 |
20130241710 | METHOD OF IDENTIFYING TAGGED ARTICLES - A method of identifying articles, each of which has a data carrier that includes identifying data of the article, the data carriers having an operation frequency, provides a robust electromagnetic (EM) field within an enclosure in which the articles are stored, even when the natural resonance frequency of the enclosure differs from the operation frequency of the data carriers. In one case data carriers comprise, RFID tags. The EM energy at the operation frequency that is injected into the enclosure to form the robust EM field is injected at a selected location in the enclosure so that the reflected phase of the EM energy from enclosure walls equals the location of injection thereby producing a robust EM field to activate and/or detect data carriers. Active impedance matching is also provided. | 09-19-2013 |
20130257666 | ANTENNA WITH MULTIPLE COUPLED REGIONS - An antenna having a driven element coupled to multiple additional elements to resonate at multiple frequencies. A magnetic dipole mode is generated by coupling a driven element to a second element, and additional resonances are generated by coupling additional elements to either or both of the driven or second element. One or multiple active components can be coupled to one or more of the coupled elements to provide dynamic tuning of the coupled or driven elements. | 10-03-2013 |
20130285877 | WIDEBAND ANTENNA WITH LOW PASSIVE INTERMODULATION ATTRIBUTES - An antenna assembly with wide bandwidth and low Passive Intermodulation (PIM) characteristics is described for use in Distributed Antenna Systems (DAS) and other applications which require low PIM levels. The antenna can be configured to cover multiple cellular frequency bands to provide a single antenna solution for use with multiple transceivers. A single conductor radiator design along with features integrated into the ground plane result in low PIM characteristics during high power transmission. One or multiple parasitic elements can be coupled to the driven antenna to enhance bandwidth while still maintaining low PIM characteristics. | 10-31-2013 |
20130335290 | MULTI-BAND MIMO ANTENNA - A multi-band antenna system for MIMO applications is adapted to provide high isolation between antennas across a wide range of frequencies. Multiple Isolated Magnetic Dipole (IMD) antennas are co-located and connected with a feed network that can include switches that adjust phase length for transmission lines connecting the antennas. Filtering is integrated into the feed network to improve rejection of unwanted frequencies. Filtering can also be implemented on the antenna structure. Either one or multi-port antennas can be used. | 12-19-2013 |
20140071008 | ANTENNA WITH PROXIMITY SENSOR FUNCTION - An antenna with proximity sensor function is disclosed, the antenna includes at least one parasitic element coupled to a filter circuit and a proximity sensing circuit for sensing a load on the parasitic element to determine load capacitive loading characteristics for sensing user leading of the device. By sensing the user loading or mode of the device, the antenna can be reconfigured with beam steering or frequency shifting adjustments. | 03-13-2014 |
20140099982 | MODAL ADAPTIVE ANTENNA FOR MOBILE APPLICATIONS - An adaptive antenna system for mobile applications where the mode of the antenna is optimized dynamically to optimize link quality with intended sources. Interfering signals are suppressed by mode selection to minimize link quality by altering antenna radiation pattern characteristics. A single driven antenna is configured such that the radiating mode can be dynamically adjusted and optimized based on link metrics. | 04-10-2014 |
20140162566 | MODAL COGNITIVE DIVERSITY FOR MOBILE COMMUNICATION SYSTEMS - A system and method for antenna diversity in a communication system are provided, the system including multiple antennas, including at least one modal antenna, wherein each of the at least one modal antenna has multiple modes corresponding to multiple radiation patterns, and a processor coupled to the multiple antennas and configured to select a mode among the multiple modes to optimize signal quality for each time interval based on a CQI. | 06-12-2014 |
20140184445 | MODAL ADAPTIVE ANTENNA USING PILOT SIGNAL IN CDMA MOBILE COMMUNICATION SYSTEM AND RELATED SIGNAL RECEIVING METHOD - One or more input signals are used to generate a Pseudo noise generator and re-inject the signal to obtain a more efficient method of control of a receiver using adaptive antenna array technology. The antenna array automatically adjusts its direction to the optimum using information obtained from the input signal by the receiving antenna elements. The input signals may be stored in memory for retrieval, comparison and then used to optimize reception. The difference between the outputs of the memorized signals and the reference signal is used as an error signal. | 07-03-2014 |
20140197954 | MOBILE DISPENSING SYSTEM FOR MEDICAL ARTICLES - A mobile dispensing cart having a plurality of locked drawers has medical articles stored therein for particular patients. The storage drawers have sizes wherein the resonant frequency of the sizes does not match the frequency of operation of the RFID system of the cart. Faraday cages and enclosures are used in the storage areas that provide robust RFID fields for exciting and reading RFID tags. An HCP for a particular patient obtains access to the drawers and opens a drawer. An RFID scanning system takes an inventory of the cart after the drawer is closed to determine if any medical article was taken, and if so which one. The identified taken article is compared to the data base of medical articles stored in the cart for the patient and if the taken article does not match the patient data base, an alarm is provided. | 07-17-2014 |
20140210596 | SYSTEM AND METHOD FOR TRACKING MEDICAL ITEMS AND IDENTIFYING ITEM CHARACTERISTICS - A system and method tracks medical articles and containers by providing a robust electromagnetic (EM) field within an enclosure in which the articles and containers are stored. Respective data carriers, such as RFID tags, attached to each article or container respond to the electromagnetic field by transmitting unique identification data. A data base associates the data carrier identification data with data about the medical articles or containers including type of medicine, size of the dose, and expiration date. A processor notifies a pharmacy when a medical article is received and when removed. The processor also notifies the finance department regarding patient medical articles and administration to update the patient's Medication Administration Record. The processor also provides inventory level counts and expiration dates. | 07-31-2014 |
20140218245 | ANTENNA AND METHOD FOR STEERING ANTENNA BEAM DIRECTION - An antenna comprising an IMD element and one or more parasitic and active tuning elements is disclosed. The IMD element, when used in combination with the active tuning and parasitic elements, allows antenna operation at multiple resonant frequencies. In addition, the direction of antenna radiation pattern may be arbitrarily rotated in accordance with the parasitic and active tuning elements. | 08-07-2014 |
20140291397 | REAL-TIME INVENTORY RE-SUPPLY SYSTEM - A system and method for managing the contents of a medical storage container that has a required inventory of medical articles. A Faraday cage enclosure is used to isolate, scan, and inventory a tray or other container of medical articles each of which has an RFID tag. The enclosure having a size smaller than the size needed for a resonant frequency at the RFID frequency of operation. A robust electromagnetic field is nevertheless developed in the enclosure and a program compares the scanned present inventory of the tray to the required inventory database and indicates any differences. Expired and recalled articles are identified. | 10-02-2014 |
20140327578 | METHOD AND SYSTEM FOR SWITCHED COMBINED DIVERSITY WITH A MODAL ANTENNA - A system and method for diversity implementation are provided, where diversity gains are obtained by using a hybrid of the switching technique and the combining technique in conjunction with the use of a modal antenna. The antenna system includes multiple antennas including at least one modal antenna that has multiple modes, and a processor for selecting one or more modes from the multiple modes associated with each of the at least one modal antenna, combining modes to form one or more combinations of modes, the modes in each of the one or more combinations including one of the one or more selected modes associated with each of the at least one modal antenna, and selecting one of the one or more combinations that optimizes correlation and/or a quality metric for diversity. | 11-06-2014 |