A wireless network includes a tunable RF transmitter in wireless communication with a master node to transmit at a first slave frequency; a tunable RF receiver in wireless communication with the master node to receive at a second slave frequency; and an RF oscillator to communicate with the RF receiver and the RF transmitter an RF oscillator frequency to determine and tune the first and second slave frequencies. The RF oscillator is configured to receive calibration information including time information or frequency information, or both, from a reference node. The RF oscillator frequency of the RF oscillator is tuned based on the calibration information from slave node and the master node at the tuned RF oscillator the reference node to enable communication between the frequency.

Methods and systems for substantially simultaneously scan of two or more frequencies using one transceiver are discussed herein. For example, a listening device can include a controller configured to control its transceiver to alternate between two or more frequencies from two or more sets of frequencies. The controller is also configured to capture a portion of a preamble of a received signal to determine whether the received signal is intended for the listening device.

Disclosed are a wireless power system including a self-regulation rectifier and a communication method thereof. The wireless power system according to an embodiment includes a reception resonator which magnetically resonates with a wireless power transfer unit through a reception antenna, a self-regulation rectifier which rectifies a power signal in a form of an alternating current (AC) received from the reception resonator into a power signal in a form of a direct current (DC) and self-regulates a rectifier output voltage without a separate power converter, and a frequency adjuster which changes a resonance frequency of the reception resonator for in-band communication with the wireless power transfer unit, wherein a reception antenna current is changed according to a change in the resonant frequency, and the reception resonator transmits a communication signal to the wireless power transfer unit through induction of the changed reception antenna current.

Disclosed are a wireless power system including a self-regulation rectifier and a communication method thereof. The wireless power system according to an embodiment includes a reception resonator which magnetically resonates with a wireless power transfer unit through a reception antenna, a self-regulation rectifier which rectifies a power signal in a form of an alternating current (AC) received from the reception resonator into a power signal in a form of a direct current (DC) and self-regulates a rectifier output voltage without a separate power converter, and a frequency adjuster which changes a resonance frequency of the reception resonator for in-band communication with the wireless power transfer unit, wherein a reception antenna current is changed according to a change in the resonant frequency, and the reception resonator transmits a communication signal to the wireless power transfer unit through induction of the changed reception antenna current.

A wireless network includes a tunable RF transmitter in wireless communication with a master node to transmit at a first slave frequency; a tunable RF receiver in wireless communication with the master node to receive at a second slave frequency; and an RF oscillator to communicate with the RF receiver and the RF transmitter an RF oscillator frequency to determine and tune the first and second slave frequencies. The RF oscillator is configured to receive calibration information including time information or frequency information, or both, from a reference node. The RF oscillator frequency of the RF oscillator is tuned based on the calibration information from the reference node to enable communication between the slave node and the master node at the tuned RF oscillator frequency.

A wireless network includes a tunable RF transmitter in wireless communication with a master node to transmit at a first slave frequency; a tunable RF receiver in wireless communication with the master node to receive at a second slave frequency; and an RF oscillator to communicate with the RF receiver and the RF transmitter an RF oscillator frequency to determine and tune the first and second slave frequencies. The RF oscillator is configured to receive calibration information including time information or frequency information, or both, from a reference node. The RF oscillator frequency of the RF oscillator is tuned based on the calibration information from the reference node to enable communication between the slave node and the master node at the tuned RF oscillator frequency.

According to various embodiments, an electronic device may include: an antenna, an antenna tuner, a transceiver, a power amplifier electrically connected to the antenna tuner and configured to perform power amplification according to an execution of impedance matching, and at least one processor operatively connected to the transceiver, the antenna tuner, and the power amplifier. The at least one processor may be configured to: configure a reference tuner code for the antenna tuner connected to the antenna in a signal path of the transceiver and identify a reflection coefficient of the antenna, calculate a tuner code of the antenna tuner based on whether the identified reflection coefficient of the antenna has been changed and an operation of at least one component of the antenna tuner, and perform the impedance matching of the antenna.

Systems and methods for performing automatic frequency control are provided. Instead of relying on individual frequency tuners for each channel of a multi-channel receiver system, the present subject matter uses a single frequency tuner for receiving each channel of the multi-channel receiver system. A locked demodulator may be designated as a reference demodulator and frequency offset values associated with the reference demodulator may be applied to other demodulators of the multi-channel receiver. These frequency offset values may be used by individual demodulators of each channel for correcting corresponding frequency offsets.

In some examples, one or more processors configured by executable instructions may receive an audio signal and data to embed in the audio signal. For example, the data may be received dynamically from one or more data sources. The one or more processors may embed the received data in real time into the audio signal as embedded data based at least in part on controlling a phase angle of a selected frequency component of the audio signal. For instance, the embedded data may include at least one of text, a bar code, a quick response code, an image, a uniform resource locator (URL), or multimedia content. Additionally, the one or more processors may send the audio signal with the embedded data over a network to a plurality of electronic devices that include respective decoders for extracting the embedded data from the audio signal.

A hand-held electronic device having a remote control application user interface that functions to displays operational mode information to a user. The graphical user interface may be used, for example, to setup the remote control application to control appliances for one or more users in one or more rooms, to perform activities, and to access favorites. The remote control application is also adapted to be upgradeable. Furthermore, the remote control application provides for the sharing of operational mode information.