Abstract: A wireless device operates in a first mode by configuring a cross-switch to establish a first signal path from a Frequency Range 3 (FR3) antenna element to a transceiver through a shared interconnect. The wireless device operates in a second mode by configuring the cross-switch to establish a second signal path from a Frequency Range 2 (FR2) module to the transceiver through the shared interconnect. The FR2 module outputs FR2 intermediate frequency (IF) signals. The wireless device transmits and receives signals through the shared interconnect in a non-concurrent manner between the first mode and the second mode.

Abstract: A UE comprises an antenna array that includes a plurality of co-located and co-directional antenna elements. The antenna elements are positioned at approximately half-wavelength spacing and are oriented to radiate in a same direction. The antenna array is a passive panel and does not have integrated active components. The UE further includes a radio frequency front-end module (RF FEM) and N radio frequency (RF) chains, with N representing an integer greater than two. Each RF chain couples a respective antenna port of the antenna array to the RF FEM. A transceiver in the UE includes N digital baseband and intermediate frequency chains. Each digital baseband and intermediate frequency chain is coupled to a respective one of the N RF chains through the RF FEM. The UE is configured to perform digital beamforming through the N digital baseband and intermediate frequency chains without any analog beamforming at the antenna array.

Abstract: In an aspect of the disclosure, a communication system is provided. The communication system is an integrated conductive switch. The integrated conductive switch includes a unified structural framework. The integrated conductive switch includes N conductive switch elements integrated within the unified structural framework. N is an integer greater than 2. In a signal path mode, the N conductive switch elements route radio frequency (RF) signals between a front-end module (FEM) and an antenna panel. In a testing mode, the N conductive switch elements route the RF signals between the FEM and a test equipment.

Abstract: A plumbing assembly includes a tank, a bowl in fluid communication with the tank, and a re-fill assembly fluidly coupled to the tank, the re-fill assembly having at least one re-fill assembly valve and being configured to control a flow of water from the tank to the bowl. The plumbing assembly also includes at least one controller operably coupled to the re-fill assembly, the at least one controller being configured to control the at least one valve within the re-fill assembly. The plumbing assembly further includes a first sensor communicably coupled to the at least one controller, the first sensor being configured to sense a water level within the bowl, wherein the at least one controller is configured to stop the flow of water responsive to the water level within the bowl satisfying a first threshold.

Abstract: Systems and methods for controlling transmission of signals are described. A camera-side modem is configured to receive two signals from a video camera and to extract a received passband signal from a transmission line. A detector in the camera-side modem generates an alarm signal when disruption or loss of the received passband signal is identified. An enable signal is used to control transmission of at least one of the baseband video signal and the passband video signal. The passband signal may be identified by an estimate of mean square error in a quadrature amplitude demodulator, a measurement of reliability provided by a constellation detector, a measurement of reliability based on a sequence of frame synchronizations and/or an estimate of mean square error in an equalizer. The detector may monitor a gain factor in an automatic gain control module of the camera-side modern and/or a magnitude of the received passband signal.

Abstract: Systems and methods for controlling transmission of signals are described. A camera-side modem is configured to receive two signals from a video camera and to extract a received passband signal from a transmission line. A detector in the camera-side modem generates an alarm signal when disruption or loss of the received passband signal is identified. An enable signal is used to control transmission of at least one of the baseband video signal and the passband video signal. The passband signal may be identified by an estimate of mean square error in a quadrature amplitude demodulator, a measurement of reliability provided by a constellation detector, a measurement of reliability based on a sequence of frame synchronizations and/or an estimate of mean square error in an equalizer. The detector may monitor a gain factor in an automatic gain control module of the camera-side modern and/or a magnitude of the received passband signal.

Abstract: An improved method of canceling a RHPZ of a switching regulator can include detecting a predetermined error signal provided to a pulse width modulation (PWM) circuit, wherein the predetermined error signal is associated with the RHPZ. Once a RHPZ is detected, a ramp waveform provided to the PWM circuit can be temporarily lengthened, thereby canceling the RHPZ. Notably, temporarily lengthening the ramp waveform can be based on adjusting an RZ*CZ time constant. In one embodiment, the ramp waveform can be lengthened to create a left half-plane zero (LHPZ), which improves stability.

Abstract: A low noise H-bridge driver for EL lamps is described herein. The H-bridge controls switching transistors to create an AC voltage across the EL lamp. To reduce audible noise of the EL lamp when driven by an H-bridge, the current through the switching transistors is limited while the voltage across the EL lamp is rising and falling. This reduces the ramp rate of the voltage across the EL lamp and, as a result, reduces vibrations to an inaudible level. The rise time and fall time may each constitute 5%-50% of a half waveform. The rise and fall portions are substantially linear and symmetrical for the half waveform. Current may be limited by using two or more MOSFETs in the H-bridge that have relatively small gate widths.

Abstract: In one embodiment, provided is a method of fracturing a portion of a subterranean formation that comprises providing a viscosified treatment fluid comprising a single salt aqueous fluid having a density of greater than 9 pounds per gallon and a crosslinked viscosifying agent, and contacting the portion of the subterranean formation with a viscosified treatment fluid so as to create or enhance one or more fractures therein, wherein the viscosified treatment fluid is introduced into a well bore that penetrates the portion of the subterranean formation to be fractured at a surface pressure of less than about 25,000 pounds per square inch. In other embodiments, provided are methods of frac packing a subterranean formation and methods of reducing a surface pressure needed to create one or more fractures in a portion of a subterranean formation.

Abstract: Wellbore servicing fluids and methods of using the same to service a wellbore in a subterranean formation are provided. A filter cake in the wellbore is contacted with the gravel packing fluid, which comprises an oil-soluble additive capable of removing the filter cake. The additive undergoes hydrolysis to produce an acid upon contacting water provided from, for example, water in the wellbore servicing fluid, connate water in the subterranean formation, water in the filter cake, water produced by the subterranean formation, water pumped into the wellbore, or combinations thereof. The acid dissolves particulates in the filter cake in situ. In an embodiment in which the wellbore servicing fluid serves as a gravel packing fluid, the fluid also deposits gravel along the face of the subterranean formation, forming a barrier against the migration of sand from the formation and into the wellbore.

Abstract: A voltage regulator includes a voltage divider connected between a soft-start pin and the voltage regulator's error amplifier. The voltage divider has the same divider ratio as that of the voltage regulator's feedback voltage divider, which is used to divide the regulated output voltage fed back to the error amplifier. To facilitate soft-start operations, an external, user-supplied capacitor is connected to the soft-start pin. To facilitate voltage tracking operations, a predetermined master supply voltage is applied to the soft-start pin.

Abstract: A method for rotationally coupling a first member (12) and a second member (14). In a first step, a first member (12) and a second member (14) are provided with one of the first member (12) and the second member (14) including a portion having cutting edge(s) extending therealong. The second member (14) defines an orifice (14a) for receiving therein at least a portion (12a) of the first member (12).

Abstract: A ball assembly (118) for a tripot-style joint includes an annular outer ball (124) having a central axis (L) extending therethrough and a depression (182) formed therein. A plurality of needle rollers (122) is positioned along an interior of the outer ball (124). A needle roller retainer (140) is provided for retaining the needle rollers (122) within the outer ball (124) during operation of the ball assembly (118). The retainer (140) has a base portion (142) axially opposed to an end portion (121) of the needle roller (122), and a flange portion (144) extending from the base portion (142) into the depression (182), the flange portion (144) of the retainer (140) being resiliently pivotable within the depression (182) in response to application of an axial load to the retainer (140). In a particular embodiment, an inner ball (120) is positioned in the interior of the outer ball (124f), and a series of resilient tabs (148f) extends from the base portion (142f) of the retainer (140f).

Abstract: Methods of controlling fluid loss in a subterranean formation comprising: providing a treatment fluid comprising an aqueous fluid and a fluid loss control additive comprising a water-soluble polymer having hydrophobic or hydrophilic modification; introducing the treatment fluid into an interval of a well bore, the well bore penetrating the subterranean formation; creating one or more perforations in the interval of the well bore, wherein the perforations extend from the well bore and into the subterranean formation; and allowing the treatment fluid to contact a portion of the subterranean formation through the one or more perforations. Methods of a reducing fluid loss from a perforated and/or gravel packed interval of a well bore using a fluid loss control additive comprising a water-soluble polymer having hydrophobic or hydrophilic modification.

Abstract: The present invention relates to methods for treating subterranean formations. In one embodiment, the present invention provides a method of fracturing a portion of a subterranean formation that comprises providing a viscosified treatment fluid comprising a single salt aqueous fluid having a density of greater than 9 pounds per gallon and a crosslinked viscosifying agent, and contacting the portion of the subterranean formation with a viscosified treatment fluid so as to create or enhance one or more fractures therein, wherein the viscosified treatment fluid is introduced into a well bore that penetrates the portion of the subterranean formation to be fractured at a surface pressure of less than about 25,000 pounds per square inch. In other embodiments, the present invention provides methods of frac packing a subterranean formation and methods of reducing a surface pressure needed to create one or more fractures in a portion of a subterranean formation.

Abstract: Wellbore servicing fluids and methods of using the same to service a wellbore in a subterranean formation are provided. A filter cake in the wellbore is contacted with the gravel packing fluid, which comprises an oil-soluble additive capable of removing the filter cake. The additive undergoes hydrolysis to produce an acid upon contacting water provided from, for example, water in the wellbore servicing fluid, connate water in the subterranean formation, water in the filter cake, water produced by the subterranean formation, water pumped into the wellbore, or combinations thereof. The acid dissolves particulates in the filter cake in situ. In an embodiment in which the wellbore servicing fluid serves as a gravel packing fluid, the fluid also deposits gravel along the face of the subterranean formation, forming a barrier against the migration of sand from the formation and into the wellbore.

Abstract: The present invention is directed to a low cost method and apparatus for fracturing a subterranean formation. The invention involves using a centrifugal pump to combine a fracture fluid, a sand suspension and liquid additive and discharge a mixture of these components into a high pressure pump that injects the mixture into the subterranean formation. The apparatus employs a control pinch valve to precisely control the amount of sand suspension being added to the mixture. The apparatus eliminates the need for expensive blenders, other equipment and associated personnel and provides a low cost means of fracturing the subterranean formation.

Abstract: A transportable note pad holder that includes a main body having a note pad well for carrying a note pad. The main body is adapted to be removably carried within a sheath. The sheath includes a means for attachment to an article, illustrated as a pair of resilient arm clips that may be used to attach the sheath to a back pack strap or the like. To remind the user that a note carried within the main body is to be reviewed, the main body is provided with an alarm. Preferably, the alarm is connected to a lamp that will draw the attention of the user to the note pad holder. The lamp may also be arranged to illuminate the interior of the main body in order to allow a user to read any notes carried thereby.

Abstract: A transportable note pad holder that includes a main body having a note pad well for carrying a note pad. The main body is adapted to be removably carried within a sheath. The sheath includes a means for attachment to an article, illustrated as a pair of resilient arm clips that may be used to attach the sheath to a back pack strap or the like. To remind the user that a note carried within the main body is to be reviewed, the main body is provided with an alarm. Preferably, the alarm is connected to a lamp that will draw the attention of the user to the note pad holder. The lamp may also be arranged to illuminate the interior of the main body in order to allow a user to read any notes carried thereby.