Abstract: Compounds, such as compounds having Formula (I): wherein each variable is as described herein, that modulate the conversion of AMP to adenosine by 5?-nucleotidase, ecto, and compositions containing the compounds and methods for synthesizing the compounds, are described herein. The use of such compounds and compositions for the treatment and/or prevention of a diverse array of diseases, disorders and conditions, including cancer- and immune-related disorders, that are mediated by 5?-nucleotidase, ecto is also provided.

Abstract: The present disclosure provides methods and systems for determined a route or distance traveled of a vehicle. A computer-implemented method for determining a route of a vehicle during a trip comprises obtaining sensor information from a vehicle and obtaining position information from the vehicle using a global positioning system (GPS) component. Next, a route of the vehicle may be determined based at least in part on the position information and route information provided by a user onboard the vehicle during the trip. For portions of the trip in which the GPS component is not available or accurate, at least a portion of a corresponding route segment may be determined using the sensor information without the position information.

Abstract: A multi-antenna structure includes: a substrate; a ground plane disposed on the substrate; a signal feed mechanism; a first antenna coupled to the ground plane via the signal feed mechanism; a second antenna coupled to the ground plane via the signal feed mechanism; and an isolator electrically coupled to the ground plane and disposed between the first antenna and the second antenna, the isolator including: a first side wall and a second side wall that define a slot; a short coupled to the first side wall and to the second side wall to define a first end of the slot; and a capacitor configured and disposed to be coupled to the first side wall and to the second side wall to define a second end of the slot.

Abstract: A printed circuit board unbalanced dipole antenna is provided for a wireless communications device. Digital and/or transceiver circuits are mounted on first portion of the printed circuit board that is positioned within a main body of a chassis of the device. A radiator is formed from a printed conductive line overlying a circuit board dielectric layer of a second portion of the printed circuit board. The printed conductive line has a first end for connection to the digital and/or transceiver circuits via a transmission line, and a second un-terminated end. The circuit board dielectric layer is positioned with an antenna section of the chassis that extends outward from the main body of the chassis. To shorten the overall length of the antenna, the printed conductive line is an alternating pattern of a plurality of first sections with a first orientation and a plurality of second sections with a second orientation.

Abstract: A system and method are provided for diversifying radiated electromagnetic communications in a wireless communication device having a plurality of embedded antennas. The method comprises sensing conducted electromagnetic transmission line signals communicated by the antennas, selecting between the antennas in response to sensing the transmission line signals, and modifying antenna electrical performance characteristics in response to sensing the transmission line signals. In some aspects sensing transmission line signals includes sensing transmission line signal power levels. For example, the power levels of the radiated signals conducted on the transmission lines can be sensed or the transmission line signal power levels of transmitted signals reflected by the antennas are sensed.

Abstract: A wireless communication device comprises an N-plexer, that is, a multi-band device, connected to a single antenna for receiving multiple communication bands on the single antenna. The N-plexer includes a receive band pass filter of a receive signal path to receive a signal in a certain frequency bandwidth for each of the multiple of communication bands. The N-plexer also includes a GPS receiver filter for receiving GPS signals. The communication device also comprises an amplifier coupled with each of the plurality of receive signal paths. The amplifier is configured to amplify the receive signals associated with each of the plurality of receive signal paths.

Abstract: A system and method are provided for regulating the electrical length of an antenna. The method comprises: communicating transmission line signals at a predetermined frequency between a transceiver and an antenna; sensing transmission line signals; and, modifying the antenna electrical length in response to sensing the transmission line signals. Sensing transmission line signals typically means sensing transmission line signal power levels. In some aspects, the antenna impedance is modified. Alternately, it can be stated that the transmission line signal strength is optimized between the transceiver and the antenna. More specifically, communicating transmission line signals at a predetermined frequency between a transceiver and an antenna includes accepting the transmission line signal from the transceiver at an antenna port. Then, sensing transmission line signals includes measuring the transmission line signal reflected from the antenna port.

Abstract: A wireless communication device comprises a plurality of receive signal paths, each of the receive signal paths is configured to receive signals in a certain frequency bandwidth. The communication device also comprises an amplifier coupled with each of the plurality of receive signal paths. The amplifier is configured to amplify the receive signals associated with each of the plurality of receive signal paths.

Abstract: A printed circuit board unbalanced dipole antenna is provided for a wireless communications device. Digital and/or transceiver circuits are mounted on first portion of the printed circuit board that is positioned within a main body of a chassis of the device. A radiator is formed from a printed conductive line overlying a circuit board dielectric layer of a second portion of the printed circuit board. The printed conductive line has a first end for connection to the digital and/or transceiver circuits via a transmission line, and a second un-terminated end. The circuit board dielectric layer is positioned with an antenna section of the chassis that extends outward from the main body of the chassis. To shorten the overall length of the antenna, the printed conductive line is an alternating pattern of a plurality of first sections with a first orientation and a plurality of second sections with a second orientation.

Abstract: A tunable dual-antenna system for multiple frequency band operation is disclosed, which allows a device to switch between multiple frequencies and/or multiple modes, such as CDMA and GSM. The system may comprise a tunable transmit antenna and a tunable receive antenna. One configuration may comprise multiple transmit antennas and multiple receive antennas.

Abstract: A system and method is provided for full-duplex antenna impedance matching. The method comprises: effectively resonating a first antenna at a frequency selectable first channel in a first frequency band; generating a first antenna impedance at the first channel frequency; effectively resonating a second antenna at a frequency selectable second channel in the first frequency band; generating a second antenna impedance at the second channel frequency; supplying a first conjugate impedance match at the first channel frequency; and, supplying a second conjugate impedance match at the second channel frequency. For example, the first antenna may be used for transmission, while the second antenna is used for received communications. The antennas effectively resonant in response to: supplying frequency selectable conjugate impedance matches to the antennas; generating frequency selectable antenna impedances; and/or selecting the frequency of antenna resonance.

Abstract: A printed circuit board unbalanced dipole antenna is provided for a wireless communications telephone. Digital and/or transceiver circuits are mounted on a wireless telephone circuit board. In addition, a radiator is formed from a printed conductive line overlying the circuit board dielectric layer, with an end for connection to a transmission line and an unterminated end. To shorten the overall length of the antenna, the radiator is formed in a series of rectangular or zig-zag meanders with a plurality of first sections with a first orientation and a plurality of second sections with a second orientation, orthogonal, or approximately orthogonal to the first orientation. In some aspects, the radiator first sections overlie the dielectric layer first side and the radiator second sections overlie the dielectric layer second side. Then, the radiator first and second sections are connected with a plurality of vias.

Abstract: A dual-band antenna matching system and a method for dual-band impedance matching are provided. The method comprises: accepting a frequency-dependent impedance from an antenna; and, selectively supplying a conjugate impedance match for the antenna at either a first and a second communication band, or a third and a fourth communication band. More specifically, the method comprises: tuning a first tuning circuit to a first frequency; and, simultaneously tuning a second tuning circuit to a second frequency. In response, a conjugate match is supplied to the antenna in the first communication band in response to the first frequency. Simultaneously, the antenna is matched in the second communication band in response to the second frequency. When the first tuning circuit is tuned to a third frequency, and the second tuning circuit is tuned to a fourth frequency, then conjugate matches are supplied for the third and fourth communication bands, responsive to the third and fourth frequencies, respectively.

Abstract: A sub-band antenna matching method and an antenna matching system for selectively matching a communication bandwidth segment impedance have been provided. The method comprises: accepting a frequency-dependent impedance from an antenna; and, selectively supplying a conjugate impedance match for the antenna at a sub-band of a first communication band. In some aspects, the method selectively supplies a conjugate impedance match for the antenna at a sub-band of a second communication band. More specifically, the method comprises: tuning a first tuning circuit to a first frequency; simultaneously tuning a second tuning circuit to a second frequency to match the antenna at a low end of the first communication band. Likewise, the first tuning circuit is tuned to a third frequency and the second tuning circuit is tuned to a fourth frequency to match the antenna at a high end of the first communication band in response to the third and fourth frequencies.

Abstract: A MEMS antenna is provided comprising a dielectric layer, and a conductive line radiator formed overlying the dielectric layer including at least one selectively connectable MEMS conductive section to vary the mechanical (physical) length of the radiator. The antenna may include a plurality of selectively connectable MEMS conductive sections and a plurality of fixed-length conductive section. The MEMS conductive sections may be parallely aligned along the radiator width, and/or parallely aligned along the radiator length. For example, the radiator may have a first length formed in response to connecting a first MEMS conductive section, and a second length, shorter than the first length, formed in response to disconnecting the first MEMS conductive section. Then, the radiator first length would be an effective quarter-wavelength odd multiple at a first frequency, and the second length would be an effective quarter-wavelength odd multiple at a second frequency.

Abstract: Exemplary systems and methods are disclosed for regulating the electrical length of an antenna. An exemplary method comprises transmitting communication signals over a transmission line at a predetermined frequency between a transceiver and an antenna, and with sufficient power to operate the antenna and radiate the communication signals; sensing transmission line signals reflected from the antenna; and modifying an electrical length of the antenna in response to sensing the transmission line signals, the transmission line signals being a reflection of the communication signals. Sensing transmission line signals typically means sensing transmission line signal power levels. In some aspects, the antenna impedance is modified. Alternately, it can be stated that the transmission line signal strength is optimized between the transceiver and the antenna.

Abstract: Parallel jobs comprise multiple tasks that can be executed in parallel by separate resources to produce an exit status for each task. The resource manager receives the jobs and dispatches the parallel tasks of the job together with task starters to a job launcher unit. The job launcher unit starts the task starters on the selected resources. Each task starter is associated with a task and commences execution of the task on the selected resource. At commencement of a task, the task starter sends the host and process identifier to the resource manager. At completion of the task, the task starters collect the exit status of the task from the associated resource and send the exit status of the task back to the resource manager. An external event unit associated with the resource manager receives the process identifier and exit status of the tasks from the task starter.

Abstract: A system and method are provided for regulating the electrical length of an antenna. The method comprises: communicating transmission line signals at a predetermined frequency between a transceiver and an antenna; sensing transmission line signals; and, modifying the antenna electrical length in response to sensing the transmission line signals. Sensing transmission line signals typically means sensing transmission line signal power levels. In some aspects, the antenna impedance is modified. Alternately, it can be stated that the transmission line signal strength is optimized between the transceiver and the antenna. More specifically, communicating transmission line signals at a predetermined frequency between a transceiver and an antenna includes accepting the transmission line signal from the transceiver at an antenna port. Then, sensing transmission line signals includes measuring the transmission line signal reflected from the antenna port.

Abstract: A transceiver system using a recursive pattern antenna and a method for forming a recursive pattern antenna are provided. The antenna has a first shape and an effective electrical length, and a second shape radiator, modified from a recursively generated pattern of the first shape, with an effective electrical length. The radiator first shape can be a triangle, rectangle, or oval, for example. In some aspects, the antenna further comprises a third shape radiator, modified from a recursively generated pattern of the first shape, with an effective electrical length. Other aspects include a fourth shape radiator, modified from a recursively generated pattern of the first shape, with an effective electrical length. In one aspect, the different radiator effective electrical lengths are conducive to electro-magnetic communications in the range between 824 and 894 MHz, 1565 and 1585 MHz, 1850 and 1990 MHz, and 2400 and 2480 MHz.

Abstract: A effectively balanced dipole antenna is provided comprising an unbalanced microstrip antenna having a transmission line interface and a planar balun connected to the transmission line interface of the antenna. The balun can be coplanar or multi-planar. For example, a coplanar balun includes an unbalanced coplanar transmission line, with a signal line interposed between a pair of coplanar grounds, and a pair of planar stubs plan-wise adjacent the coplanar grounds. The coplanar grounds are connected to the plane stubs with conductive lines proximate to the antenna transmission line interface. A microstrip planar balun includes an unbalanced microstrip signal line, a microstrip ground formed on the dielectric layer underlying the signal line, and a pair of planar stubs, plan-wise adjacent the microstrip ground. The planar stubs can be located on the same dielectric layer as the signal line or the ground. A stripline planar balun is also provided.