Abstract: A radio frequency front-end includes a first path, second path, and third path each coupled between an antenna and a transceiver. The first path is configured to convey WLAN signals from the transceiver to the antenna for transmission. The second path is configured to convey received Bluetooth signals and received WLAN signals from the antenna to the transceiver. The third path is configured to convey Bluetooth signals from the transceiver to the antenna for transmission when a WLAN link is active and not in a power save state, and is configured to convey received Bluetooth signals from the antenna to the transceiver, and Bluetooth signals from the transceiver to the antenna for transmission, when the WLAN link is either inactive or in the power save state.

Abstract: This disclosure describes systems, methods, and computer-readable media related to near field communication (NFC) sensors with power sleep mode. In some embodiments, one or more motions of a user device may be detected. The one or more motions may be analyzed to identify a pre-defined motion of a user device. A wireless sensor of the user device may be enabled in response to the identified pre-defined motion. A wireless sensor-enabled device may be determined to be within a pre-determined distance. Data may be exchanged with the wireless sensor-enabled device. The wireless sensor may be disabled upon completion of the data exchange.

Abstract: Methods and systems for coexistence in a multiband, multistandard communication system utilizing a plurality of phase locked loops (PLLs) are disclosed. Aspects may include determining one or more desired frequencies of operation of a transceiver, determining a frequency of unwanted signals such as spurs, intermodulation, and/or mixing product signals, and configuring the Plls to operate at a multiple of the desired frequencies while avoiding the unwanted signals. The desired frequencies may be generated utilizing integer, which may include multi-modulus dividers. The wireless standards may include LTE, GSM, EDGE, GPS, Bluetooth, WiFi, and/or WCOMA, for example. The frequencies may be configured to mitigate interference. Plls may be shared when operating in TOO mode, and used separately operating in FOO mode. One or more digital interface signals, zero exceptions on a transmitter spur emission mask, and sampling clocks for AOCs and/or DACs in the transceiver may be generated utilizing the PLLs.

Abstract: Embodiments provide systems and methods to optimize the time when to transmit a silencing frame, and hence, improve the overall network throughput and avoid access point transmission rate fall-back mechanism having an avalanche effect during coexistence of dissimilar wireless network technologies. A device comprises at least two dissimilar network technology subsystems, at least one subsystem of which is lower priority than at least another of the dissimilar subsystems. In some embodiments, a device is able to transmit a silencing frame during a transmission window within a lower priority technology network interval. In other embodiments, a device calculates a transmission window, the transmission window to occur within a lower priority technology network interval, and transmits a silencing frame during the transmission window.

Abstract: The proposed process makes it possible to noticeably and dynamically increase the operational frequency band of a wideband emission/reception device without performance degradation, this thanks to the implementation of a particular architecture and a judicious distribution of the technical constraints over the analogue and digital sub-assemblies of a user terminal.

Abstract: Techniques for using one or multiple downconverters to receive multiple transmissions sent on multiple carriers are disclosed. In an exemplary design, an apparatus includes first and second downconverters. The first downconverter downconverts a first radio frequency (RF) signal when it is selected. The second downconverter downconverts a second RF signal when it is selected. Each of the first and second RF signals includes multiple transmissions sent on multiple carriers to a wireless device. The first downconverter is selected to perform downconversion for the multiple transmissions when at least one criterion is not met. The first and second downconverters are selected to perform downconversion for the multiple transmissions, based on different mixing frequencies, when the at least one criterion is met. The at least one criterion may relate to imbalance between the multiple carriers, received power of a received RF signal, etc.

Abstract: Methods and apparatus for mitigating the effects of interference between multiple air interfaces located on an electronic device. In one embodiment, the air interfaces include a WLAN interface and PAN (e.g., Bluetooth) interface, and information such as Receiver Signal Strength Index (RSSI) as well as system noise level information are used in order to intelligently execute interference mitigation methodologies, including the selective application of modified frequency selection, variation of transmitter power, and/or change of operating mode (e.g., from multiple-in multiple-out (MIMO) to single-in, single-out (SISO)) so as to reduce isolation requirements between the interfaces. These methods and apparatus are particularly well suited to use cases where the WLAN interface is operating with high data transmission rates. Business methods associated with the foregoing technology are also described.

Abstract: A variable-gain low-noise amplifier (VG-LNA) accepts a single-ended input signal at an input port and provides a differential output signal at an output port. The VG-LNA includes amplifier stages that are commonly coupled to the input port, with subtrahend amplifier stages commonly coupled to a negative terminal of the output port and minuend amplifier stages commonly coupled to a positive terminal of the output port. A control circuit activates up to one of the subtrahend amplifier stages and one of the minuend amplifier stages as a differential set of amplifier stages that generates the differential output signal from the single-ended input signal.

Abstract: A transceiver, a method of providing multiple-band virtual concurrent wireless communication and a wireless device incorporating the transceiver or the method. In one embodiment, the transceiver includes: (1) first transmit and receive intermediate frequency (IF) strips, (2) second transmit and receive IF strips, (3) first and second local oscillators (LOs) and (4) switches operable to multiplex clock signals from the first and second local oscillators to cause the transceiver to operate in a selectable one of: (4a) a unified, multiple-input, multiple-output (MIMO) mode in which the first and second transmit and receive IF strips are driven to transmit and receive in a first band and (4b) a concurrent multiple-band connection mode in which the first transmit and receive IF strips are driven in the first band and the second transmit and receive IF strips are concurrently driven in a second band.

Abstract: A method is provided for determining the imperfections of a transmit pathway and of a receive pathway of an apparatus, and associated radio apparatus, the transmit pathway comprising a first device for frequency transposition of an analogue sequence to an analogue signal, using a first transposition frequency, the receive pathway comprising a second device for frequency transposition of an analogue signal to an analogue sequence, using a second transposition frequency different from the first transposition frequency.

Abstract: A mobile terminal and corresponding method, the mobile terminal including a flexible display configured to be warped between configurations having different radiuses of curvature, a sensor configured to sense the warpage, and a controller configured to display first screen information in a first configuration, and display a first image object corresponding to the first screen information when the flexible display is warped from the first configuration to a second configuration. When a different application is driven, a second image object corresponding to the different application is displayed along with the first image object, in the second configuration, and when the flexible display is warped again from the second configuration to the first configuration, screen information corresponding to part of the first image object and the second image object is displayed.

Abstract: A method and mechanism to use a serving evolved Node B, eNB, to force a User Equipment, UE, (being served by that eNB) into Discontinuous Reception, DRX, mode despite pending data transactions at the UE. This results in timely reading of Extended Cell Global Identity, ECGI, of neighboring cell(s), thereby facilitating entry of a target cell into the serving cell's neighbor list via Automatic Neighbor Relation, ANR, and subsequent handover (if needed) to that target cell. The serving eNB may instruct its scheduler to not allocate any Resource Blocks, RBs, to the UE (especially when the UE has high volume of pending data transactions and/or when the UE is in motion and its retransmission rate is beyond a specific threshold) such that the UE automatically goes into the DRX mode. The duration of the DRX cycle also may be optionally extended until ECGI measurements from the UE are received.

Abstract: A system and method for improved wireless communications at a host device (e.g., a portable computing device, a mobile communications device) having multiple wireless communication abilities (e.g., Bluetooth® and Wi-Fi®). When a component (e.g., a monitor, an Ethernet dongle) having Bluetooth capability is coupled to the host device (e.g., wired or wirelessly), the host device copies its Bluetooth link keys to the component, deactivates its own Bluetooth module and activates (or initiates activation of) the component's. The component's Bluetooth module is operated using a software stack executing on the host device. Thereafter, the component handles Bluetooth operations and the host device communicates with Bluetooth devices via the component. Greater radio isolation is thus provided between antennae used by Bluetooth and Wi-Fi.

Abstract: Methods and systems are disclosed for reducing signal interference between Bluetooth (BT) and WLAN (e.g. WiFi) communications in an information handling system. The WLAN receiver has configurable front-end filter circuitry. Based upon information concerning the BT frequency region for current BT communications, the WLAN receiver can adjust or set its configurable front-end filter circuitry to filter out the BT communications. As the BT communications hop from frequency to frequency, the WLAN receiver can continue to adjust its configurable front-end filter circuitry accordingly. Example implementations for the configurable front-end filter circuitry include bandpass filters and selectable low pass and high pass filters. These filters are selected and/or tuned such that BT frequency regions are filtered from the WLAN input signal before further WLAN signal processing is conducted, thereby improving the performance of simultaneous BT and WLAN communications.

Abstract: Radar sensor for motor vehicles, including a transmitting antenna in the form of a planar array antenna having multiple adjacent antenna elements, and including a power supply system for supplying the antenna elements with microwave power. The power supply system is designed for supplying each pair of directly adjacent antenna elements with microwave power in phase opposition.

Abstract: An apparatus may include a microprocessor and a wireless communication interface configured to perform at least one of receiving a first radio signal or transmitting a second radio signal. The microprocessor may be configured to execute at least one of a base-band encoder software program or a base-band decoder software program. The apparatus may be further configured to execute a wireless communication protocol selector software program that may be configured to optimize a value of a user-defined criterion in order to dynamically select at least one of a wireless communication network, a wireless communication protocol, and a parameter of a wireless communication protocol.

Abstract: A system includes at least one computer, at least one dock which engages the computer, and at least first and second millimeter wave transceivers which transmit information between the computer and the dock. The first transceiver sends signals having a first polarization and the second transceiver sends signals having a second polarization different from the first polarization.

Abstract: Methods, systems, and computer readable media for wideband frequency and bandwidth tunable filtering are disclosed. According to one aspect, the subject matter described herein includes a wideband frequency and bandwidth tunable filter that splits a filter input signal into first and second input signals, modifies the first input signal to produce a first output signal, modifies the second input signal to produce a second output signal having an intermediate frequency response, and combines the first and second output signals while adjusting their relative phases and/or amplitudes to produce a filter output signal with the target frequency response. Adjustment includes splitting the second input signal into third and fourth input signals, which are modified and then combined to produce the second output signal having the intermediate frequency response.

Abstract: A mobile phone system having an application processing function is physically separated into a network data processing device and an application data processing device. Here, the network data processing device configured to process data for voice calls and data calls is placed in one small and light-weight device, the application data processing device configured to perform a high-quality user interface and high-quality applications is placed in another device, and communication between the two devices is defined.

Abstract: Systems, methods, and other embodiments associated with wireless coexistence through antenna switching are described. According to one embodiment, a method includes selecting one or both of a first transceiver and a second transceiver for connection to an antenna, based, at least in part, on the operating mode of the first transceiver and the second transceiver. The method includes connecting the selected transceiver(s) to the antenna, such that the selected transceiver(s) is enabled to communicate on the antenna and any transceiver(s) not selected is not able to communicate on the antenna.

Abstract: A bridge device includes a first radio frequency (RF) transceiver that receives event data via an incoming RF signal from protective headgear in response to an impact event at the protective headgear, wherein the incoming RF signal is formatted in accordance with a first wireless protocol. A second RF transceiver transmits the event data in accordance with a second wireless protocol to a first monitoring device.

Abstract: The specification and drawings present a new apparatus and method for an RF tracking filter which may be used in RF transceivers. Instead of having band pass filter and switches in the signal path exemplary embodiments of the invention describe keeping the signal path intact for wanted frequency components and drawing selectively signal energy (e.g., corresponding to unwanted frequency components) from the signal path. This may be done with a shunt passive switch comprising multiple switches for generating commutated signals of the radio frequency signal. Behind the switches there may be a plurality of active feedback loops, each drawing a frequency dependent current for one of the one or more commutated signals and feeding the drawn current back to the passive input switch to cancel only the unwanted frequency components of the radio frequency signal.

Abstract: Systems and methods for combining signals from multiple active wireless receivers are discussed herein. An exemplary system comprises a first downconverter, a phase comparator, a phase adjuster, and a second downconverter. The first downconverter may be configured to downconvert a received signal from a first antenna to an intermediate frequency to create an intermediate frequency signal. The phase comparator may be configured to mix the received signal and a downconverted signal to create a mixed signal, compare a phase of the mixed signal to a predetermined phase, and generate a phase control signal based on the comparison, the downconverted signal being associated with the received signal from the first antenna. The phase adjuster may be configured to alter the phase of the intermediate frequency signal based on the phase control signal. The second downconverter may be configured to downconvert the phase-shifted intermediate frequency signal to create an output signal.

Abstract: A system and method of identifying changes utilizing radio frequency polarization includes receiving a reflected and/or transmitted polarized radio frequency signal at a receiver, filtering, amplifying and conditioning the received signal, converting the received signal from an analog format to a digital format, processing the digital signal to elicit a polarization mode dispersion feature of the received signal, and comparing the polarization mode dispersion features to a known calibration to detect a change in a characteristic of the target object.

Abstract: A device comprises a plurality of distributed transceivers, a plurality of distributed beamformers, a baseband processor, and a network management engine. The distributed transceivers perform beamforming in a radio frequency band. The distributed beamformers, however, performs beamforming in an intermediate frequency band. Each of the distributed transceivers is coupled to a corresponding one of the distributed beamformers. Each transceiver-beamformer pair is coupled to the baseband processor utilizing a same communication medium such as a cable. For transmission, a data stream generated at baseband is converted to intermediate frequencies. With a low-power transmission, the distributed beamformers transmit the data stream wirelessly in the intermediate frequencies to a receiving device. With a normal-power transmission, the distributed transceivers transmit the data stream to the receiving device in the radio frequency band. The transceivers and the beamformers are turned OFF whenever not being used.

Abstract: Method for monitoring a cargo container in which a transmitter is arranged on the container and periodically transmits messages to a remote site or location according to a schedule of messages. When a message is not received according to the schedule, which may be the result of tampering with the transmitter or another nefarious action involving the container, it may be considered that the container has been stolen. A rate of transmission of the messages may be modified based on a condition of the vehicle, such as the presence of a driver inside the vehicle, a distance between a driver inside the vehicle and the vehicle, the vehicle being at rest after motion of the vehicle stops, a location of the vehicle, biometric identification of a driver of the vehicle and deviation of the vehicle from an expected route, and/or based on current time and weather around the vehicle.

Abstract: A transceiver includes a local oscillation module, a transmitter section, and a receiver section. The local oscillation module is operable to generate a transmit local oscillation and a receive oscillation. The transmitter section includes a transmit mixing module and a transmit weaved connection that is operable to high frequency filter the transmit location oscillation. The transmit mixing module mixes the filtered transmit location oscillation with a transmit signal to produce an up-converted signal. The receiver section includes a receive mixing module and a receive weaved connection that is operable to high frequency filter the receive location oscillation. The receive mixing module mixes the filtered receive location oscillation with an RF received signal to produce a down-converted signal.

Abstract: Devices and methods related to packaging of radio-frequency (RF) devices on ceramic substrates. In some embodiments, a packaged electronic device can include a ceramic substrate configured to receive one or more components. The ceramic substrate can include a conductive layer in electrical contact with a ground plane. The packaged electronic device can further include a die having an integrated circuit and mounted on a surface of the ceramic substrate. The packaged electronic device can further include a conformal conductive coating implemented over the die to provide shielding functionality. The packaged electronic device can further include an electrical connection between the conformal conductive coating and the conductive layer.

Abstract: An integrated chip (IC) package may include a waveguide that comprises a cavity, a first chip and a second chip. The first chip includes a first radio frequency (RF) transceiver that may be coupled to a first probe that extends into the cavity of the waveguide and/or a first antenna that is positioned over a first opening in the waveguide. The second chip includes a second RF transceiver that may be coupled to a second probe that extends into the cavity of the waveguide and/or a second antenna that is positioned over a second opening in the waveguide. The first and second chips may be configured to communicate with one another exclusively by the first and second RF transceivers transmitting and receiving RF signals through the cavity of the waveguide via the first and second probes and/or the first and second antennas.

Abstract: A communication apparatus, which is capable of communicating with a first apparatus via a first communication interface and communicating with a second apparatus via a second communication interface, determines whether the first apparatus complies with a power-saving function of the first communication interface and selects, based on a result of the determination, a communication interface to be operated when the communication apparatus is set to be in a power-saving state from between the first communication interface and the second communication interface. Depending on an ambient environment, a communication interface to be operated during a power-saving operation is selected to increase a power-saving effect.

Abstract: A bidirectional matching network is disclosed. In an exemplary embodiment, an apparatus includes a first matching circuit connected in a first signal path between a node and a first amplifier, the first matching circuit configured to translate an off-state impedance of the first amplifier to a first translated off-state impedance. The apparatus also includes a second matching circuit connected in a second signal path between the node and a second amplifier. The second matching circuit configured to translate an off-state impedance of the second amplifier to a second translated off-state impedance. The second translated off-state impedance is configured to reduce power loss associated with a first signal flowing in the first signal path and the first translated off-state impedance is configured to reduce power loss associated with a second signal flowing in the second signal path.

Abstract: An antenna module embeds front end circuitry with an antenna. Adaptive matching circuitry external to the antenna module is electrically connected between the embedded front end circuitry and the embedded antenna.

Abstract: Systems and methods associated with an intercom system for a drive-through, quick service restaurant facility is disclosed. Generally, a plurality of headsets is configured for communication with a base station. A speaker is associated with the drive-through facility is configured to be located near a menu board, and is configured for communication with the base station. A microphone is also configured to be located near the menu board and configured for communication with the base station. A plurality of parameters control the configuration of the intercom system, and the base station is connectable to a wide area communication network to enable remote adjustment of the plurality of parameters.

Abstract: In one embodiment, an antenna unit is provided that includes an antenna and a coax connector. The coax connector includes an inner conductor configured to contact a signal conductor of a coaxial cable and a ground contact configured to contact a metal shield of the coaxial cable. The coax connector is coupled to the antenna such that RF signals on the inner conductor are coupled to the antenna and such that RF signals sensed by the antenna are coupled to the inner conductor. The antenna unit also includes a non-volatile memory coupled to the coax connector such that the non-volatile memory can send and receive signals over the inner conductor. The non-volatile memory is configured to obtain operating power from a direct current voltage provided over a coaxial cable. The non-volatile memory has an identifier stored therein for identifying the antenna unit.

Abstract: An inductive coupling apparatus for modifying an incoming radio frequency (RF) signal includes an inductive element. A variable impedance circuit includes an output electrically coupled to the inductive element. A band-pass delta sigma modulator is coupled to the variable impedance circuit and digitally controls the output of the variable impedance circuit. The incoming RF signal is modified as the coupled impedance of the inductive element is adjusted in accordance with the output of the variable impedance circuit.

Abstract: A transceiver system which can communicate a plurality of linked partners, and the increase in power consumption by the transceiver system can be minimized. The transceiver system includes a transceiver, and a communication controller. The transceiver is capable of performing transmitted and received data communication with terminal devices. The communication controller is capable of controlling the memory transfer of transmitted and received data. The transceiver system can be set to an operation mode selected from among intermittent- and uninterrupted-operation modes. In the intermittent-operation mode, the transceiver and the communication controller work alternately, whereas in the uninterrupted-operation mode, the transceiver and the communication controller works in parallel. The operation mode of the transceiver system is set according to unique identification data of terminal devices.

Abstract: An inductive coupling apparatus for modifying an incoming radio frequency (RF) signal includes an inductive element for modifying the incoming RF signal in accordance with a coupled impedance characteristic of the inductive element. A variable impedance circuit includes an output electrically coupled to the inductive element. A low pass delta sigma modulator is coupled to the variable impedance circuit and digitally controls the output of the variable impedance circuit, the coupled impedance of the inductive element being adjusted based on the output of the variable impedance circuit.

Abstract: A method of performing digital pre-distortion in a communication network is described. The method comprises implementing a transceiver in the communication network, the transceiver enabling the transfer of communication signals in the communication network by way of a wireless communication channel; sampling signals, at the transceiver, associated with a transmit signal which are necessary to perform digital pre-distortion; providing the sampled signals to a remote computer; and generating, at the remote computer, parameters to be applied to a digital pre-distortion circuit of the transceiver. A communication network configured to enable digital pre-distortion is also described.

Abstract: An antenna element includes a bias network circuitry for: during a receive mode, charging a transmit supply capacitor from a transmit power source while decoupling a receive supply capacitor from a receiver power source and coupling the receive supply capacitor to discharge and thereby provide bias to the receiver; and during a transmit mode, charging the receive supply capacitor from the receive power source while decoupling the transmit supply capacitor from the transmit power source and coupling the transmit supply capacitor to discharge and thereby provide bias the transmitter. The antenna element includes a phase shifter/attenuator section having an amplifier and a phase shifter and wherein bias voltage is provided to the amplifier and phase shifter by the transmit supply capacitor during the transmit mode and the receive supply capacitor during the receive mode.

Abstract: A method for estimating a whole-body Specific Absorption Rate (SAR) caused in a body by electromagnetic fields emitted by a wireless communication device (40), where the body is represented by a phantom (30) and the wireless communication device (40) is positioned in the proximity of the phantom (30), comprises determining a complex electric field in a plurality of points distributed substantially in a single planar or curved surface (31) within the phantom (30), based on measurements of the magnitude of the electric field components in these points, and based on an assumption of constant phase of the electric field components. The method further comprises estimating a whole-body SAR in the phantom (30) based on the determined complex electric field in the plurality of points, and based on propagation of the complex electric field from the plurality of points into the volume of the phantom (30).

Abstract: A method for adaptive communication in an HF frequency band includes at least one of the following steps: the determination of a payload subband S that is available for a transmission in the HF band, the selection in the payload subband S of a set of n frequency channels of identical width according to a frequency allocation plan and the quality of the link of each of said channels, or the simultaneous transmission on the n frequency channels of a signal complying with an HF waveform.

Abstract: Embodiments of the present invention are directed to a wireless-enabled component (WEC) for enabling a wireless bus for intra-chip and inter-chip communication. A WEC encompasses a functional block of an IC (such as, for example, a processing core of a processing unit), an entire IC (such as, for example, a processing unit), or a device that includes a plurality of ICs (such as, for example, a handheld device). According to embodiments, a WEC may be associated with one or more sub-blocks of an IC, a single IC, or a plurality of ICs.

Abstract: A intelligent backhaul radio have an advanced antenna system for use in PTP or PMP topologies. The antenna system provides a significant diversity benefit. Antenna configurations are disclosed that provide for increased transmitter to receiver isolation, adaptive polarization and MIMO transmission equalization. Adaptive optimization of transmission parameters based upon side information provided in the form of metric feedback from a far end receiver utilizing the antenna system is also disclosed.

Abstract: An analog envelope shaper within an envelope tracking power amplifier system detects an envelope voltage of a transmission signal and generates a shaped envelope amplifier control signal based upon a programmable threshold, below which the output does not fall, and a plurality of different voltages centered around a corresponding threshold input voltage, a selectable spacing of which controls the shape of the transition between negative clipping and linear regions of the envelope detector output function. The programmable features and the resulting piecewise linear shaping allow for tailoring of the envelope response to balance linearity and efficiency, without negating the efficiency benefits of envelope tracking power amplification. Since the analog envelope shaper employs no high speed data converter functions, the resulting power dissipation will be substantially less than digital designs.

Abstract: A SAW-less receiver includes an FEM interface module, an RF to IF receiver section, and a receiver IF to baseband section. The RF to IF receiver section includes a mixing module, a mixed buffer section, and a frequency translated BPF (FTBPF) circuit module. The mixing module converts an inbound RF signal into an in-phase (I) mixed signal and a quadrature (Q) mixed signal. The mixed buffer section filters and buffers the I mixed signal and filter and buffer the Q mixed signal. The FTBPF circuit module frequency translates a baseband filter response to an IF filter response such that the FTBPF circuit module filters undesired signal components of the IF I signal and the IF Q signal to produce an inbound IF signal. The receiver IF to baseband section converts the inbound IF signal into one or more inbound symbol streams.

Abstract: A system and method for configuring a component carrier is presented. A component carrier assignment message is received. The component carrier assignment message may be configured to identify the component carrier and include at least one of, at least one of a downlink carrier frequency, a carrier frequency of a paired uplink carrier, a bandwidth of the component carrier, and a bandwidth of the paired uplink carrier, an indication of whether the component carrier is a control channel monitoring component carrier configured to signal data channel assignment information for the component carrier, and a logical index of the component carrier. The component carrier assignment message may then be used to configure the component carrier on a user equipment (UE).

Abstract: Methods and systems for extending a bandwidth of a multi-mode wideband antenna of a user device are described. A multi-mode wideband antenna includes a single radio frequency (RF) feed coupled to a first element, and a second element coupled to the first element and a ground plane. The first element is to operate as a feeding structure to a parasitic grounding element that is coupled to the ground plane, but is not conductively connected to the RF feed. The multi-mode wideband antenna is configured to provide multiple resonant modes.

Abstract: A speaker bar for a tablet computer is presented. The speaker bar is sized to fit inside a cover of the tablet computer by folding or rolling the speaker bar inside the cover. The speaker bar has retractable speaker members that extend outward beyond the edges of the speaker bar housing along a longitudinal axis of the speaker bar. Power is provided to the speaker bar when the retractable members are extended, and the power is turned off when the retractable members are retracted. The speaker bar connects to a tablet computer via Bluetooth wireless connection.

Abstract: Embodiments of apparatuses, systems and methods relating to temperature compensated bulk acoustic wave devices. In some embodiments, temperature compensated bulk acoustic wave devices are described with an over-moded reflector layer.

Abstract: A device for bridging communications between radios on a tactical network and telephones on a public cellular network. A dock region of the device housing receives and engages a given telephone that operates on the second network. A processing core of the device has (a) a core engine for receiving and transmitting first radio frequency (RF) signals on the first network, (b) digital signal processing stages for (i) translating first information modulated on the first RF signals into a format compatible with telephones on the second network, and producing corresponding translated first information, and (ii) translating second information demodulated by the given telephone from second RF signals on the second network into a format compatible with radios on the first network, and modulating the translated second information on the first RF signals transmitted by the core engine. An adapter provides an interface between the processing core and the given telephone.