Patent application number | Description | Published |
20090185976 | METHOD FOR INTRODUCING A CHEMICAL AGENT INTO THE SYSTEMIC CIRCULATION - A method for introducing a drug, imaging agent and/or other chemical agent into the systemic circulation comprises providing a the drug, imaging agent and/or other chemical agent in liposomes having a mean diameter of less than about 200 nm, preferably less than about 80 nm, as determined by negative-staining transmission electron microscopy. The liposomes are orally administered. It has been found that liposomes of such small sizes are not absorbed by the macrophages in the Peyer's patches of the gut, but instead are introduced into the venous circulation from the Peyer's patches, and then through the portal vein or inferior vena cava system, through the heart, and into the systemic circulation. | 07-23-2009 |
20110270060 | DEVICE AND METHODS FOR MONITORING THE ADMINISTRATION OF A STEM CELL TRANSPLANT - A device and methods for the real-time monitoring of stem cells in a stem cell transplant. The device comprises a linear member and particle detection device configured to occupy the lumen of a catheter while the catheter is in place to administer a stem cell transplant to a delivery site in the body of a patient. Monitoring of the stein cells permits the device to provide signals to a computer processor for the determination of one or more characteristics of stein cells in the stein cell transplant. | 11-03-2011 |
20130251785 | METHOD AND COMPOSITION FOR TREATING CYSTITIS - A medicament for treating cystitis and a method of treatment are provided. An agent to repair the damaged glycosaminoglycan (“GAG”) layers lining the urothelium, noted in cystitis, such as pentosan polysulfate, hyaluronic acid, chondroitin, etc., is provided in a liposomal carrier. Cystitis is treated by intravesically administering to a patient a therapeutically effective dose of the medicament. | 09-26-2013 |
20140348899 | METHOD AND COMPOSITION FOR TREATING CYSTITIS - A medicament for treating cystitis and a method of treatment are provided. The medicament comprises a stromal vascular fraction provided in a liposomal carrier. Optionally, the medicament also controls one or more additional agents, such as a growth factor, glycosaminoglycan, DMSO, and/or another small molecule used to treat cystitis or having an effect on human stem cells. Cystitis is treated by intravesically administering to a patient a therapeutically effective dose of the medicament. The SVF can be derived from a patient's own adipose cells via liposuction. | 11-27-2014 |
20160067744 | SYSTEMS AND METHODS FOR THE ENVIRONMENTAL REMEDIATION OF MATERIALS CONTAMINATED WITH HEAVY MINERALS - The invention relates to a method and system for the environmental remediation of materials that are contaminated with heavy minerals, such as heavy metals. The invention finds utility in removing heavy minerals from materials such as soils, sediments, mine tailings and ores. The invention provides a means for removing heavy minerals from contaminated materials without the use of water while reducing the generation of dust. Thus, the invention provides an environmentally friendly method for the remediation of sites that are contaminated with heavy minerals. | 03-10-2016 |
Patent application number | Description | Published |
20090201084 | MULTI-MODE POWER AMPLIFIERS - Multi-mode power amplifiers that can support multiple radio technologies and/or multiple frequency bands are described. In one exemplary design, a first linear power amplifier supporting multiple radio technologies may be used to amplify a first RF input signal (e.g., for low band) and provide a first RF output signal. A second linear power amplifier also supporting the multiple radio technologies may be used to amplify a second RF input signal (e.g., for high band) and provide a second RF output signal. Each linear power amplifier may include multiple (e.g., three) chains coupled in parallel. Each chain may be selectable to amplify an RF input signal and provide an RF output signal for a respective range of output power levels. An RF input signal may be a phase modulated signal or a quadrature modulated signal and may be pre-distorted to account for non-linearity of the power amplifier. | 08-13-2009 |
20130260699 | GENERATING TEST MEASUREMENT VALUES FOR AUTOMATIC CALIBRATION USING AN INTERNAL TESTING LOAD - A wireless communication device configured for automatic calibration is described. The wireless communication device includes a testing load. The wireless communication device also includes a transceiver chip. The wireless communication device further includes a radio frequency connector switch that couples circuitry on the transceiver chip to one of the testing load, an external load and a radiating element. | 10-03-2013 |
20130273861 | DEVICES FOR SWITCHING AN ANTENNA - A switchplexer is described. The switchplexer includes switches that are coupled to an antenna. The switchplexer also includes ports. Each of the switches is separately coupled to one of the ports. The switchplexer also includes controlling circuitry coupled to the switches. The controlling circuitry concurrently closes at least two of the switches when indicated by a control signal. | 10-17-2013 |
20140197902 | DIPLEXER DESIGN USING THROUGH GLASS VIA TECHNOLOGY - A diplexer includes a substrate having a set of through substrate vias. The diplexer also includes a first set of traces on a first surface of the substrate. The first traces are coupled to the through substrate vias. The diplexer further includes a second set of traces on a second surface of the substrate that is opposite the first surface. The second traces are coupled to opposite ends of the set of through substrate vias. The through substrate vias and the traces also operate as a 3D inductor. The diplexer also includes a capacitor supported by the substrate. | 07-17-2014 |
20140327496 | TUNABLE DIPLEXERS IN THREE-DIMENSIONAL (3D) INTEGRATED CIRCUITS (IC) (3DIC) AND RELATED COMPONENTS AND METHODS - Tunable diplexers in three-dimensional (3D) integrated circuits (IC) (3DIC) are disclosed. In one embodiment, the tunable diplexer may be formed by providing one of either a varactor or a variable inductor in the diplexer. The variable nature of the varactor or the variable inductor allows a notch in the diplexer to be tuned so as to select a band stop to eliminate harmonics at a desired frequency as well as control the cutoff frequency of the pass band. By stacking the elements of the diplexer into three dimensions, space is conserved and a variety of varactors and inductors are able to be used. | 11-06-2014 |
Patent application number | Description | Published |
20090074106 | MULTI-MODE AND MULTI-BAND TRANSMITTERS FOR WIRELESS COMMUNICATION - Transmitters supporting multiple modulation modes and/or multiple frequency bands are described. A transmitter may perform large signal polar modulation, small signal polar modulation, and/or quadrature modulation, which may support different modulation schemes and systems. Circuit blocks may be shared by the different modulation modes to reduce cost and power. For example, a single modulator and a single power amplifier may be used for small signal polar modulation and quadrature modulation. The transmitter may apply pre-distortion to improve performance, to allow a power amplifier to support multiple frequency bands, to allow the power amplifier to operate at higher output power levels, etc. Envelope and phase distortions due to non-linearity of the power amplifier may be characterized for different input levels and different bands and stored at the transmitter. Thereafter, envelope and phase signals may be pre-distorted based on the stored characterizations to compensate for non-linearity of the power amplifier. | 03-19-2009 |
20090138226 | SYSTEMS AND METHODS FOR MEASURING NON-LINEAR CHARACTERISTICS OF A POWER AMPLIFIER - A method for measuring non-linear characteristics of a power amplifier is described. A calibration waveform is calculated during a testing procedure period. Amplitude characteristics of the calibration waveform at the output of the power amplifier are measured during the testing procedure period. Phase characteristics of the calibration waveform at the output of the power amplifier are measured during the testing procedure period. Pre-distortion techniques are configured based on the amplitude characteristics and the phase characteristics to be used during a normal operation period of a transmitter. | 05-28-2009 |
20090161588 | SYSTEMS AND METHODS FOR CONTROLLING THE VOLTAGE OF SIGNALS USED TO CONTROL POWER AMPLIFIERS - A method for controlling the voltage of signals used to control power amplifiers is described. A first multiplexer and a second multiplexer are set to an enabling signal. The first multiplexer is on a first integrated circuit and the second multiplexer is on a second integrated circuit. A command is written to the first multiplexer to set the first multiplexer to one of a plurality of control signals used to control a power amplifier. A command is written to the second multiplexer to select one of the plurality of control signals that maps to the first multiplexer. The second integrated circuit is connected to a power supply. | 06-25-2009 |
20100291888 | MULTI-MODE MULTI-BAND POWER AMPLIFIER MODULE - A multi-mode multi-band power amplifier (PA) module is described. In an exemplary design, the PA module includes multiple power amplifiers, multiple matching circuits, and a set of switches. Each power amplifier provides power amplification for its input signal when selected. Each matching circuit provides impedance matching and filtering for its power amplifier and provides a respective output signal. The switches configure the power amplifiers to support multiple modes, with each mode being for a particular radio technology. Each power amplifier supports at least two modes. The PA module may further include a driver amplifier and an additional matching circuit. The driver amplifier amplifies an input signal and provides an amplified signal to the power amplifiers. The additional matching circuit combines the outputs of other matching circuits and provides an output signal with higher output power. The driver amplifier and the power amplifiers can support multiple output power levels. | 11-18-2010 |
20100308933 | TUNABLE MATCHING CIRCUITS FOR POWER AMPLIFIERS - Tunable matching circuits for power amplifiers are described. In an exemplary design, an apparatus may include a power amplifier and a tunable matching circuit. The power amplifier may amplify an input RF signal and provide an amplified RF signal. The tunable matching circuit may provide output impedance matching for the power amplifier, may receive the amplified RF signal and provide an output RF signal, and may be tunable based on at least one parameter effecting the operation of the power amplifier. The parameter(s) may include an envelope signal for the amplified RF signal, an average output power level of the output RF signal, a power supply voltage for the power amplifier, IC process variations, etc. The tunable matching circuit may include a series variable capacitor and/or a shunt variable capacitor. Each variable capacitor may be tunable based on a control generated based on the parameter(s). | 12-09-2010 |
20100321086 | POWER AND IMPEDANCE MEASUREMENT CIRCUITS FOR A WIRELESS COMMUNICATION DEVICE - Exemplary embodiments disclosed are directed to power and impedance measurement circuits that may be used to measure power and/or impedance are described. A measurement circuit may include a sensor and a computation unit. The sensor may sense (i) a first voltage signal across a series circuit coupled to a load to obtain a first sensed signal and (ii) a second voltage signal at a designated end of the series circuit to obtain a second sensed signal. The sensor may mix (i) a first version of the first sensed signal with a first version of the second sensed signal to obtain a first sensor output and (ii) a second version of the first sensed signal with a second version of the second sensed signal to obtain a second sensor output. The computation unit may determine the impedance and/or delivered power at the designated end of the series circuit based on the sensor outputs. | 12-23-2010 |
20110037516 | MULTI-STAGE IMPEDANCE MATCHING - Exemplary techniques for performing impedance matching are described. In an exemplary embodiment, the apparatus may include an amplifier (e.g., a power amplifier) coupled to first and second matching circuits. The first matching circuit may include multiple stages coupled to a first node and may provide input impedance matching for the amplifier. The second matching circuit may include multiple stages coupled to a second node and may provide output impedance matching for the amplifier. At least one switch may be coupled between the first and second nodes and may bypass or select the amplifier. The first and second nodes may have a common impedance. The apparatus may further include a second amplifier coupled in parallel with the amplifier and further to the matching circuits. The second matching circuit may include a first input stage coupled to the amplifier, a second input stage coupled to the second amplifier, and a second stage coupled to the two input stages via switches. | 02-17-2011 |
20130063223 | IMPEDANCE MATCHING CIRCUITS WITH MULTIPLE CONFIGURATIONS - Reconfigurable impedance matching circuits with multiple configurations are disclosed. A reconfigurable impedance matching circuit may be implemented with a set of reactive elements (e.g., inductors and/or capacitors) and a set of switches. Different configurations may be obtained with different settings of the switches and may be associated with different impedance tuning curves. This may enable the reconfigurable impedance matching circuit to provide better impedance matching for a load circuit (e.g., an antenna). In an exemplary design, the reconfigurable impedance matching circuit includes at least one variable reactive element configured to tune the impedance of the reconfigurable impedance matching circuit in order to provide better impedance matching. In an exemplary design, the reconfigurable impedance matching circuit may include at least one reconfigurable reactive element, each of which can be connected as a series element or a shunt element. | 03-14-2013 |
20130069737 | ADAPTIVE TUNING OF AN IMPEDANCE MATCHING CIRCUIT IN A WIRELESS DEVICE - Techniques for adaptively tuning an impedance matching circuit are disclosed. In an aspect, the impedance matching circuit is pre-characterized. The performance of the impedance matching circuit is determined for multiple settings of the impedance matching circuit, stored in memory, and used to tune the impedance matching circuit. In another aspect, the impedance matching circuit is tuned based on measurements for one or more parameters such as delivered power, return loss, power amplifier current, antenna/load impedance, etc. In an exemplary design, an apparatus includes a memory and a control unit. The memory stores information for multiple settings of an impedance matching circuit. The control unit selects one of the multiple settings of the impedance matching circuit based on the information for the multiple settings and measurements for the impedance matching circuit. The impedance matching circuit performs impedance matching for a load circuit (e.g., an antenna) based on the selected setting. | 03-21-2013 |
20130322562 | METHOD AND APPARATUS FOR ANTENNA TUNING AND TRANSMIT PATH SELECTION - Certain aspects of the present disclosure propose a method and an apparatus for antenna tuning and transmit path selection in an RF system. A method may include antenna diversity path selection by (optionally) diagnosing damaged antennas, tuning antennas, and selecting an antenna with better performance. Embodiments can be used in wireless radio-frequency (RF) front-ends. Other aspects, embodiments, and features are also claimed and described. | 12-05-2013 |
20130324057 | DETERMINING A DELIVERED POWER ESTIMATE AND A LOAD IMPEDANCE ESTIMATE USING A DIRECTIONAL COUPLER - A wireless device configured for optimizing a delivered power is described. The wireless device includes a filter duplexer or switch coupled to a transmitter and a receiver. The wireless device also includes a power/impedance detector coupled to the filter duplexer or switch. The power/impedance detector includes a directional coupler. An antenna is coupled to the power/impedance detector. Other aspects, embodiments and features are also claimed and described. | 12-05-2013 |
20130331042 | CONTROL OF TRANSMIT POWER AND ADJUSTMENT OF ANTENNA TUNING NETWORK OF A WIRELESS DEVICE - Techniques for controlling transmit power and adjusting an antenna tuning network of a wireless device are disclosed. In an exemplary design, an apparatus (e.g., a wireless device or a circuit module) includes a directional coupler and at least one detector. The directional coupler receives an input radio frequency (RF) signal at a first port, provides an output RF signal at a second port, and provides a coupled RF signal at a third port. The detector(s) receive at least one RF signal on at least one port of the directional coupler, measure the at least one RF signal, and provide measurements that are used to control the transmit power of the wireless device and adjust an antenna tuning network. For example, the measurements may be used to determine incident power, reflected power, delivered power, etc., which may be used to control the transmit power and/or adjust the antenna tuning network. | 12-12-2013 |