Abstract: Methods and architectures are described to allow concurrent operation of two separate, non-synchronized, radio systems utilizing closely spaced frequency bands, such as IEEE 802.11p and LTE-V2X, or NR-V2X vehicular communications systems, with a common antenna. A full duplex-“like” active interference cancellation process may be employed that includes self-interference cancellation in the RF domain, in the analog domain and the digital baseband domain to reduce complexities and costs of stringent antenna isolation, otherwise required, for a simultaneous TX and RX mode of operation and concurrent RX mode of operation in closely spaced frequency resources.

Abstract: Methods implemented by a processor in a wireless device for detecting the presence in a network of a jammer or non-benign entity that targets physical layer channels in a communication network are disclosed.

Abstract: A switching circuit includes a first transmission terminal, a second transmission terminal, a third transmission terminal, and a variable impedance circuit. The first and the second transmission terminals coupled to a common node form a first transmission path. The third transmission terminal coupled to the common node forms a second transmission path with the first transmission terminal. The variable impedance circuit has a first terminal coupled between the common node and the third transmission terminal, and a second terminal coupled to a first reference potential terminal. When the first transmission path transmits a first signal, a first frequency bandwidth range provided by the variable impedance circuit is determined according to a first frequency of the first signal so that the variable impedance circuit provides low impedance in the first frequency bandwidth range, and the first frequency bandwidth range covers the first frequency.

Abstract: An analog-to-digital converting apparatus includes a first stage converter which performs a first analog-to-digital conversion on an input analog signal during a first stage period, a second stage converter which receives a first residue from the first stage converter amplified by a first gain and which performs a second analog-to-digital conversion during a second stage period, and a recombination logic circuit which combines a first output signal from the first stage converter and a second output signal from the second stage converter into an output digital signal that corresponds to the input analog signal. The second stage converter generates a second stage feedback signal obtained by amplifying the second output signal by the first gain during a first sub-cycle in the second stage period, and generates a second output signal of a second sub-cycle subsequent to the first sub-cycle based on the second stage feedback signal.

Abstract: An amplifier circuit includes: a plurality of amplifiers; a plurality of monitor elements provided for each of the plurality of amplifiers and disposed on a same chip with the corresponding amplifier; and a processor configured to: measure characteristics of each of the plurality of monitor elements; reduce a difference in distortion between a plurality of signals output from the plurality of amplifiers based on the measured characteristics; and compensate for the distortion.

Abstract: A radio frequency circuit includes: a first filter having a passband corresponding to a first frequency band of at least 5 gigahertz and less than a predetermined frequency; a second filter having a passband corresponding to a second frequency band of at least the predetermined frequency; a switch configured to switch connection of the first filter between a first transfer circuit and a third transfer circuit. The first filter is connected between a first antenna connector terminal and the first transfer circuit and between the first antenna connector terminal and the third transfer circuit. The second filter is connected between a second antenna connector terminal and a second transfer circuit. A first communication system or a second communication system is a wireless local area network (WLAN) system.

Abstract: A scalable dual mode monitoring system according to the present invention is configured to communicate using RF communication channels wherever possible for better range and less battery power consumption. When the system uses 2.4 GHz FHSS RF technology, the system coverage could reach a range of 250 meters line of sight; standby current goes down significantly as compared to that of solely using Wi-Fi communication channel; time to get video streaming is reduced when compared to systems that solely use Wi-Fi communication channel because RF communication channels allow for better and faster synchronization; system set-up via RF link is easy without pairing or any setup and requires simply plug and play when using RJ45 cable connecting to router from the hub.

Abstract: To realize multiple band support in wireless communication in a more favorable manner. A semiconductor device including: a plurality of terminals; and a plurality of transistor groups provided for each of the terminals, in which a plurality of transistors are connected in series in each group. The plurality of transistor groups have different ON-resistances from each other and receive inputs of signals having different power levels from each other.

Abstract: An antenna front-end module, method, and information handling system are adapted to the application of a direct-current (DC) bias voltage in relation to an antenna and detect a connection status of the antenna based on a sensed DC voltage. When the connection status corresponds to the antenna being connected, a first transmit power level is configured. When the connection status corresponds to the antenna being disconnected, a second transmit power level is configured. A transmit power boost can be provided such that the first transmit power level is greater than the second transmit power level. The first transmit power level can correspond to a radiative transmission mode, and the second transmit power level can correspond to a conductive transmission mode.

Abstract: One variation of a device case includes a device case body: configured to accept and retain a mobile device; defining a strap receptacle; and including a first set of magnetic features arranged across a base surface of the strap receptacle. The device case further includes a strap: coupled to the device case body; configured to seat within the strap receptacle in a retracted position; configured to accept a finger of a user in a deployed position; and including a second set of magnetic features configured to transiently couple to the first set of magnetic features to drive the strap from the deployed position to the retracted position and to retain the strap within the strap receptacle in the retracted position.

Abstract: Methods, systems, and computer program products are described for automatically reducing interference within received signals. A first radio frequency (RF) signal having (i) a desired component and (ii) an interference component with a noise component and a jammed component is received. A trained machine learning (ML) model extracts, from the RF signal, the jammed component and a portion of the noise component. The trained ML model generates and outputs a second RF signal comprising the desired component and a reduced noise component. The reduced noise component has the portion of the noise component removed. The jammed component is removed from the second RF signal.

Abstract: The disclosure provides a method of operating a communication network. The method includes receiving input data related to a state of the communication network and operation of the communication network. The method then includes determining a policy for the communication network based on the input data. The policy is a set of features for forming a plurality of communication links in the communication network over a time interval. The plurality of communication links provides one or more paths through the communication network. Determining the policy is based at least in part on utility values of previous policies. The utility values of previous policies are derived using simulation and/or real-world implementation of the previous policies. The communication network is then operated to implement the policy in the time interval.

Abstract: A radio frequency module includes a module board, a transmission power amplifier, a first inductance element connected to an output terminal of the transmission power amplifier, a reception low-noise amplifier, and a second inductance element connected to an input terminal of the reception low-noise amplifier. The first inductance element is mounted on a first principal surface of the module board, and the second inductance element is mounted on a second principal surface of the module board.

Abstract: An electronic device having antennas according to an implementation is provided. The electronic device may include a first antenna disposed on a rim thereof and configured to receive a first signal that is a Long-Term Evolution (LTE) signal or a New Radio (NR) signal of a first band, a second antenna disposed to be spaced apart from the first antenna by a predetermined interval, and configured to receive a second signal that is an LTE or NR signal of a second band higher than the first band, and a transceiver circuit operably coupled to the first antenna and the second antenna. In one implementation, the electronic device may include a baseband processor configured to control the transceiver circuit to receive the first signal through the first antenna and the second signal through the second antenna.

Abstract: A circulator-coupler device includes a ferrite element, a resonator over and aligned along an axis with the ferrite element, and a plurality of resonator ports connected to the resonator. The plurality of resonator ports includes first and second resonator ports, and a first portion of a perimeter of the resonator extends between the first and second resonator ports. The circulator further includes a coupler element positioned across a gap from the first portion of the perimeter of the resonator, and a coupler port connected to the coupler element. The device also may include a permanent magnet aligned along the axis with the ferrite element, where the permanent magnet biases the ferrite element and causes a signal conducted through the resonator to have a directionality along a rotational direction that extends from the first resonator port to the second resonator port.

Abstract: According to certain aspects, a chip includes a first port, a first amplifier, and a first input path coupling the first port to an input of the first amplifier. The chip also includes a second port, a second amplifier, and a second input path coupling the second port to an input of the second amplifier. The chip further includes a switchable path coupled between the first input path and the second input path.

Abstract: A duplexer may be used to isolate a transmitter and a receiver that share a common antenna. By using impedance gradients to provide impedances that cause balance-unbalance transformers (balun) of the duplexer to cut-off access to the common antenna rather than duplicate the antenna impedance, the duplexer is balanced. Such cut-offs may have a lower insertion loss than a duplexer that merely duplicates the antenna impedance to separate the differential signals of the receiver and transmitter from the common mode signal.

Abstract: A radio-frequency circuit is used in simultaneous transfer of a radio-frequency signal of 4G and a radio-frequency signal of 5G, and includes a first transfer circuit that receives the radio-frequency signal of 4G or the radio-frequency signal of 5G which are input in a switching manner, and transfers a radio-frequency signal of a first communication band including a first transmission band and a first reception band and a radio-frequency signal of a second communication band including a second transmission band and a second reception band. The first and second transmission bands at least partially overlap. The first transfer circuit includes a first power amplifier that amplifies transmission signals of the first and second communication bands, and a first transmission filter that has a first passband including the first and second transmission bands, and passes the transmission signals of the first and second communication bands output from the first power amplifier.

Abstract: A user equipment (UE) and a method of operating the UE. The UE includes a front surface, a rear surface, a transceiver, and a plurality of electromagnetic strips. The front surface includes a display and the rear surface includes a cover. The transceiver is between the display and the cover and is configured to transmit signals supporting vertical polarization and horizontal polarization. The plurality of electromagnetic strips are proximate to the cover and oriented to selectively tilt one of the horizontal polarization or the vertical polarization of the signals.

Abstract: The present invention relates to an automatic bandwidth adjusting method comprising steps of receiving at least one radio signal, converting the at least one radio signal in a preset filter bandwidth into at least one audio signal; generating at least one signal-to-noise ratio (SNR) information based on the at least one audio signal, wherein the filter bandwidth is adjusted between multiple preset range intervals, and the range intervals are different; comparing the at least one SNR information with a preset first critical SNR and a preset second critical SNR to determine whether to adjust the filter bandwidth or not; outputting a bandwidth adjustment signal when the filter bandwidth needs to be adjusted; and adjusting the filter bandwidth according to the bandwidth adjustment signal.