Abstract: Systems and methods for automated unmanned aerial vehicle recognition. A multiplicity of receivers captures RF data and transmits the RF data to at least one node device. The at least one node device comprises a signal processing engine, a detection engine, a classification engine, and a direction finding engine. The at least one node device is configured with an artificial intelligence algorithm. The detection engine and classification engine are trained to detect and classify signals from unmanned vehicles and their controllers based on processed data from the signal processing engine. The direction finding engine is operable to provide lines of bearing for detected unmanned vehicles.

Abstract: The outphasing power combiner circuit includes a transformer having a primary coil coupled to a first power amplifier (PA) and a second PA, and a secondary coil. The secondary coil supplies a current to an antenna based on a first direction of a first phase of a first amplified constant-envelope signal in the primary coil with respect to a second phase of a second amplified constant-envelope signal in the primary coil. The outphasing power combiner circuit further includes load impedance coupled between a median point of the primary coil and ground. The load impedance dissipates the current based on a second direction of the first phase of the first amplified constant-envelope signal in the primary coil with respect to the second phase of the second amplified constant-envelope signal in the primary coil, which results in improved power efficiency.

Abstract: The disclosed systems and methods are directed to wireless receiver systems for neutralizing the effects of received RF blocking signals. The configurations presented herein operate to receive RF signals containing a desired signal and a blocking signal, a first module, in communication with the receive RF signals along a first signal path and configured to extract a specimen of the received desired and blocking signals, and a second module, in communication with the first module along a second signal path to receive the desired signal and blocking signal specimens. The second module is configured to produce a replica of the blocking signal based on the blocking signal specimen, generate an anti-blocking signal based on the blocking signal replica, and introduce the anti-blocking signal to the received desired and blocking signals in which the anti-blocking signal destructively interferes to neutralize the received blocking signal.

Abstract: A mobile device holder attached to the back surface of a mobile device is provided. More particularly, a mobile device holder is provided, whereby a mobile device can stand at a predetermined angle or be mounted at various positions according to user's surroundings.

Abstract: A closed loop transmitter (Tx) calibration system is disclosed. The closed loop Tx calibration system comprises a transmitter circuit configured to generate a Tx output signal at a Tx output frequency based on a Tx local oscillator (LO) signal. The closed loop Tx calibration system further comprises a loop back (LPBK) receiver circuit coupled to the transmitter circuit and configured to downconvert the Tx output signal at the Tx output frequency to form an LPBK baseband signal at an LPBK intermediate frequency (IF), based on an LPBK LO signal. In some embodiments, the LPBK IF frequency is different from zero. In some embodiments, the closed loop Tx calibration system further comprises an LO generation circuit configured to generate the Tx LO signal and the LPBK LO signal from a single phase locked loop (PLL) source, based on utilizing a digital to time converter (DTC) circuit.

Abstract: An electronic device is provided. The electronic device includes an antenna array configured to include a plurality of antenna modules, a communication circuit configured to include a plurality of power amplifiers connected with the plurality of antenna elements and a plurality of phase shifters, at least one processor operatively connected with the communication circuit, and a memory operatively connected with the at least one processor and includes instructions.

Abstract: A test system includes: a signal processor configured to generate a plurality of orthogonal baseband sequences; a signal generator configured to supply the plurality of orthogonal baseband sequences to a corresponding plurality of RF transmitters of a device under test (DUT), wherein the RF transmitters each employ the corresponding orthogonal baseband sequence to generate a corresponding RF signal on a corresponding channel among a plurality of channels of the DUT such that the RF transmitters output a plurality of orthogonal RF signals at a same time; a combiner network configured to combine the plurality of orthogonal RF signals and to output a single signal under test; and a single channel measurement instrument configured to receive the single signal under test and to measure independently therefrom at least one characteristic of each of the RF transmitters. Orthogonal RF test signals may be used similarly to test RF receivers of the DUT.

Abstract: A near-field communication (NFC) circuit includes a transmitter that generates a transmission signal based on a reference clock signal and transmits the transmission signal through an antenna; a clock recovery circuit that receives a detection signal through the antenna responsive to the transmission signal and recovers a recovered clock signal from the detection signal; a phase detector that detects a phase change of the recovered clock signal; and a controller that determines, based on the phase change of the recovered clock signal, whether an NFC tag external to the NFC circuit is located within a communication range of the NFC circuit.

Abstract: A variable RF attenuator includes a substrate, a first microstrip trace, a first thin film resistor, a second microstrip trace, and a wire bond. The substrate includes a dielectric layer. The first thin film resistor is disposed on the substrate. The first microstrip trace is disposed on the substrate and the first thin film resistor. The second microstrip trace is disposed on the substrate and is uncoupled from the first microstrip trace. The wire bond extends from the second microstrip trace to a position on the first microstrip trace. The position is selected to tune RF attenuation over a conductive path defined by the first microstrip trace, the wire bond, and the second microstrip trace.

Abstract: An antenna is provided for a personal computing device, for example a wearable device such as a smartwatch. The antenna includes one or more radiating elements configured to receive or transmit radio waves. For example, the one or more radiating elements may at least partially be formed by one or more components of a display of a device, where the one or more components of the display include one or more conductive elements. The one or more radiating elements may also at least partially be formed by a dedicated antenna layer positioned in the display of the device.

Abstract: A method of providing over-the-air assistance information for interference cancellation or suppression to the receiver is proposed. Under a first solution, a two-stage DCI (downlink control information) or SCI (sidelink control information) scheduling method is proposed. The set of first-stage DCI or SCI provides a part of scheduling information which is beneficial for interference cancellation or suppression and is broadcasted by a transmitter or scheduler to all receivers. The set of second-stage DCI or SCI includes the remaining scheduling information and is unicasted by a transmitter or scheduler to each receiver. Under a second solution, assistance information DCI for interference cancellation or suppression is broadcasted by a transmitter or scheduler to all receivers.

Abstract: A method of detecting a power level of an RF signal includes driving an internal node of a power detection circuit to a DC node voltage level, generating, based on the DC node voltage level, a first component of an output voltage on an output node of the power detection circuit, receiving the RF signal on an input node of the power detection circuit, dividing the RF signal to generate a modulation signal on the internal node, and generating, by at least partially rectifying the modulation signal, a second component of the output voltage on the power detection circuit output node.

Abstract: Methods and systems for processing a noisy time series input to detect a signal, generate a de-noising mask, and/or output a de-noised time series output are provided. The input is transformed into one or more datagrams, such as real and imaginary time-frequency grams. The datagrams are stacked and provided as first and second channel inputs to a neural network. A neural network is trained to detect signals within the input. Alternatively or in addition, the network is trained to generate a de-noise mask, and/or to output a de-noised time series output. Implementation of the method and systems can include the use of multiple deep neural networks (DNNs), such as convolutional neural networks (CNN's), that are provided with inputs in the form of RF spectrograms. Embodiments of the present disclosure can be applied to various RF devices, such as communication devices, including but not limited to multiple inputs multiple output (MIMO) devices and 5G communication system devices, and RADAR devices.

Abstract: A high frequency circuit (4) includes a first terminal (40a), a second terminal (51a), a third terminal (51b), a first path, a second path, a first matching element (41) and a first amplifier (50a) both arranged in the first path, a first switch (42) connected between a reference terminal and a part of the first path, the part spanning between the first matching element and the first amplifier, a second matching element (43) and a second amplifier (50b) both arranged in the second path, and a second switch (44) connected between the reference terminal and a part of the second path, the part spanning between the second matching element and the second amplifier.

Abstract: Disclosed is receiver for a noise limited system. A front-end circuit amplifies and band-limits an incoming signal. The amplification increases the signal swing but introduces both thermal and flicker noise. A low-pass band limitation reduces the thermal noise component present at frequencies above what is necessary for correctly receiving the transmitted symbols. This band limited signal is provided to the integrator circuit. The output of the integrator is equalized to reduce the effects of inter-symbol interference and then sampled. The samples are used to apply low frequency equalization (i.e., in response to long and/or unbalanced strings of symbols) to mitigate the effects of DC wander caused by mismatches between the number of symbols of each kind being received.

Abstract: Embodiments of the invention include a base station that includes a central transceiver unit (CTU) having a plurality of transceiver cores and a substrate. A printed circuit board (PCB) supports the substrate and at least one antenna unit is coupled to the PCB with at least one of a cable and a waveguide. The at least one antenna unit transmits and receives communications at a frequency of approximately 4 GHz or higher.

Abstract: Technologies are disclosed herein for utilizing near field communication (“NFC”) to improve the security, performance, and configuration of computing systems. In particular, NFC can be utilized to power an NFC-equipped server computer on or off, to log directly into an operating system executing on the NFC-equipped server computer, to stream firmware debugging data from an NFC-equipped server computer to an NFC-equipped mobile device, to initiate the update or recovery of firmware, to provide hardware inventory data, or to pair hardware devices. Firmware debugging data can also be streamed from a firmware to an NFC-equipped mobile device. NFC can also be utilized to disable functionality provided by a mobile device while the device is in motion, such as when a user of the mobile device is operating a motor vehicle.

Abstract: A transmitter is mounted on each of a plurality of wheel assemblies included in a vehicle. The transmitter executes a process in accordance with a command included in a trigger signal. The transmitter includes a pressure sensor that detects the tire pressure, a transmission unit that transmits a data signal including a detection result of the pressure sensor to a receiver, a trigger reception unit that receives the trigger signal, and a controller that controls the transmitter. When the trigger reception unit receives the trigger signal including a command shifting a state of the transmitter to a standby state, the controller shifts the state of the transmitter to the standby state. Further, when the trigger reception unit receives the trigger signal including a command designating a mode while the state of the transmitter is the standby state, the controller sets the designated mode.

Abstract: A communication device includes: a coil disposed around a core area of the communication device; a processor disposed in the core area and configured to establish communication with an external device through the coil; and a discrete element disposed on the coil and connected to the processor through a via.

Abstract: Exemplary aspects are directed to FM-radio circuitries and systems in which, at the receiving end of a broadcast transmission, circuitry is used set the bandwidth and band position for receiving the desired channel of the broadcast signal based on measured signal properties of immediately-adjacent channel(s). The adjustments to the received channel include bandwidth selection and offset frequency adjustment. These adjustments are, in part, based on USN signal levels as well as modulation symmetry detection which are affected by the modulation level of the desired and other channel(s). Signal processing circuitry such as logic/CPU circuitry, then receives the desired channel, including information carried by the broadcast signal, in response to setting the bandwidth based on the measured signal properties.