Abstract: A method of adjusting signal processing in a receiver based on signal strength includes determining a received signal strength indicator (RSSI) level, defining an RSSI value to be high when the RSSI level is above a first threshold or defining the RSSI value to be low when the RSSI level is below the first threshold, determining an automatic gain control (AGC) gain level, defining an AGC value to be high when the AGC gain level is above a second threshold or defining the AGC value to be low when the AGC gain level is below the second threshold, and adjusting power consumption of one or more receiver stages based on the RSSI value and the AGC value.

Abstract: Mobile devices may minimize the radiation exposure to users by controlling the distance between the user, specifically the head, and the mobile device to a minimum distance. The reduction in exposure is realized due to the operation of the Inverse Square Rule on electromagnetic signal from the mobile device recognizing there is a steep fall off of signal strength resultant from increased distance between the head of the user and the source of the signal. Embodiments increase and maintain operational distance between the user and the broadcast device to reduce signal absorption, while maintaining sound quality and volume. Embodiments enforce the operational distance with physical barriers preventing the distance from being reduced. Embodiments described herein also allow for the retraction of the physical barrier for storage or portage.

Abstract: A method (600) and devices for enhancing the performance of one or more antennas (440) is provided. A control circuit (104) assesses performance of an antenna (101) in a plurality of bands, such as a receive band and a transmit band. The control circuit (104) can then adjust an adjustable impedance matching circuit (103) coupled to the antenna (101) to improve the efficiency of the antenna (101) in the selected band and can adjust a resonance of the antenna (101) to further improve an efficiency of the antenna (101) in the selected band. Operating parameters for the antenna (101) can be selected from one or more multi-dimensional lookup tables (120) where the parameters are indexed both to a first operating band (702) and a second operating band (703).

Abstract: A transmitter channel interference mitigation processing method for cancellation of intermodulation products are described.

Abstract: The described embodiments augment an activity performed in a first application at a source electronic device using a controller at a companion electronic device. The source electronic device receives controller information describing a controller that the activity performed in the first application accepts controller data from, determines a controller identifier for the controller information, and broadcasts a controller advertisement comprising the controller identifier. Upon receiving the controller advertisement, the companion electronic device determines whether a second application that can provide the controller data is available at the companion electronic device. If the second application is available, the companion electronic device establishes a cooperative-activity communication channel with the source electronic device. The companion electronic device uses the cooperative-activity communication channel to provide controller data to the source electronic device.

Abstract: A set of receiver path circuits is allocated for processing a radio-frequency (RF) signal provided by receive antennas coupled to the receiver path circuits. The RF signal may belong to a first signal class, such as Wi-Fi. A first gain control signal is applied to each of the allocated receiver path circuits to condition a signal level of the RF signal for the first signal class. A second gain control signal is applied to another set of receiver path circuits coupled to the receive antennas to condition the RF signal of a second signal class. First receive gain control signals are generated from the RF signals of the first signal class by the allocated set of the receiver path circuits. The first receive gain control signals are configured to optimize the signal level for processing the first signal class. A second receive gain control signal is generated to optimize the signal level of the RF signal for the second signal class.

Abstract: A system for use in a mobile device comprises: a switch unit configured to switch a common connection of a transmitter and a first receiver from a first antenna to a second antenna and a connection of a second receiver from the second antenna to the first antenna; and a processing system configured to receive at least two reception signals from the first and second receivers; in response to receiving the two reception signals, evaluate a communication link via the first and second antennae; based on the evaluation of the communication link, determine that the transmitter needs to transmit via the second antenna; obtain reception parameters used by said first and second receivers; cause the switch unit to switch the common connection of the transmitter and a first receiver so that the transmitter transmits via the second antenna; and exchange reception parameters between the at least two receivers.

Abstract: A method and apparatus for applications of identification of variations of propagation path to transmit diversity control. Transmit diversity parameters may be modified according to detected dynamics, which may, for example, be related to changes in actual propagation and network conditions. Such dynamics may be referred to as mobility parameters. Mobility parameters may apply to variability in a propagation path due to any conditions. Determination of a mobility parameter may be conducted using one or more of multiple parameters available to the mobile terminal. Such feedback information indication, which is related to the propagation path conditions, may be provided to the apparatus, which would attempt to find a more desired mode of operation, which may lead to reduction in power and the improvement of the quality of transmission.

Abstract: Disclosed are systems, devices, and methodologies to reduce harmonics in a radio frequency output signal. A power amplifier system comprises a power amplifier and a tunable output matching network electrically connected between the output of the power amplifier and an output of the tunable output matching network. The tunable output matching network reduces second-order harmonics in an amplified radio frequency signal when the power amplifier operates in a low frequency mode. The tunable output matching network includes traps such as a series inductor and a first capacitor in series with a first switch, a second capacitor in series with a second switch, and a third capacitor in series with a third switch, where the traps are tuned to selected harmonic frequencies when the power amplifier operates in the low frequency band of the operating band of frequencies.

Abstract: A super-regenerative receiver (SRR) includes a super-regenerative oscillator (SRO), and an active channel filter disposed at a front end of the SRO, and configured to filter out an interferer in a signal received by the SRR.

Abstract: A method for surveying a site for installation of wireless access points is provided. A map of the site under survey is displayed. User input relating to the position of a first wireless device at the site is received. User input relating to the position of a second wireless device at the site is also received. Wireless signals broadcast by the second wireless device are measured using the first wireless device to obtain signal strength values corresponding to the strength of the wireless signals. Attenuation values based on the signal strength values are calculated and assigned to features on the map of the site under survey.

Abstract: Some demonstrative embodiments include devices, systems and methods of controlling communications of a multi-radio device. For example, a multi-radio device may include a first radio to communicate over a first wireless network; a first controller to control the first radio; a second radio to communicate over a second wireless network; a second controller to control the second radio; and an interface to communicate signaling messages between the first and second controllers, wherein the first controller is to send to the second controller a request to transmit, the request to transmit indicating a request to allow the first radio to transmit over the first wireless network, and wherein the second controller is to assert a transmit-allowed signal over the interface to indicate that the request to transmit is granted, or to de-assert the transmit-allowed signal to indicate that the request to transmit is denied.

Abstract: Techniques for noise reduction are described herein. The techniques include an apparatus for noise reduction including a voltage tuner to adjust a voltage swing for a signal line in a differential signal line pair. The apparatus may also include a timing module to adjust a timing skew between the differential signal line pair, wherein the voltage swing and timing skew adjustment introduce a common mode noise in the differential signal line pair to reduce a radio frequency interference (RFI) noise coupling.

Abstract: A circuit of a wireless transceiver chip is disclosed. In the circuit of the wireless transceiver chip of the present invention, a capacitor is connected between the secondary conductor of the transformer in the transmitter circuit and the ground pad to form a notch filter for filtering the image signal. An ESD protection circuit is connected with the capacitor in parallel. Since the ESD protection circuit is not connected to the signal receiving path, the performance of the chip would not be degraded.

Abstract: A case for use with an electronic device includes a base portion with side portions extending therefrom forming a pocket. The case also includes a first material generally at an exterior of the pocket, forming a majority of an exterior surface of the base portion, and a second material secured to and having a higher coefficient of friction than the first material, generally at an interior of the pocket. The second material protrudes through aperture(s) in the first material at the base portion to protrude from the interior to the exterior of the base portion, and outward from the first material such that the second material contacts a support surface when the base portion is placed thereon. The protruding second material extends away from the aperture(s) on opposing surfaces of the first material at the exterior and interior of the pocket to provide securement between the first and second materials.

Abstract: Echo removal techniques are described. As part of the echo removal, an adaptive model estimate of the echo in a received audio signal is determined using an adaptive model based on an outputted audio signal and the received audio signal. The adaptive model executes an algorithm comprising a convergence parameter to determine filter coefficients and uses said filter coefficients to filter the outputted audio signal to determine the adaptive model estimate of the echo. An accuracy value of the adaptive model is determined according to an echo return loss enhancement metric. The convergence parameter is updated based on the accuracy value. The adaptive model estimate of the echo is used to remove the echo in the received audio signal.

Abstract: In accordance with an embodiment, a circuit includes a plurality of switching networks coupled between a corresponding plurality of RF ports and a common RF port, and a control circuit. Each of the plurality of switching networks includes a first switch coupled between its corresponding RF port and the common RF port, and at least one of the plurality of switching networks includes a selectable network coupled between the first switch and the common RF port, such that the selectable network provides a DC path in a first state and a series capacitance in a second state.

Abstract: According to an embodiment, there is provided with an oscillator including: a clock circuit, a power supply current source and an oscillating circuit wherein the clock circuit generates a clock signal, the power supply current source generates a power supply current according to the clock signal, and the oscillating circuit generates an oscillation signal of a higher frequency than a frequency of the clock signal based on the power supply current and a received signal from an input terminal, the received signal having amplitude of a predetermined level or more.

Abstract: One or more beamsteering matrices are applied to one or more signals to be transmitted via multiple antennas. After the one or more beamsteering matrices are applied to the one or more signals, the plurality of signals is provided to a plurality of power amplifiers coupled to the multiple antennas. Signal energies are determined for the plurality of signals provided to the plurality of power amplifiers, and relative signal energies are determined based on the determined signal energies. Output power levels of the plurality of power amplifiers are adjusted based on the determined relative signal energies.

Abstract: A broadcast receiver and method for controlling the same are discussed. According to an embodiment, the broadcast receiver includes a display unit, a communication unit configured to establish an Internet access and receive a broadcast, and a control unit. The control unit displays on the display unit a text input box selectively usable for a first search category and a second search category, and displays a current category indicator indicating a current search category of the text input box. When the current category indicator is selected to change the current search category, the current search category of the text input box is changed from the first search category to the second search category, and an appearance of the current category indicator for the text input box is changed to indicate the changed search category.