Abstract: Apparatus, systems, and methods implementing techniques for calibrating a filter circuit. A comparator generates an output based on a filter output amplitude signal and a reference amplitude signal. A calibration logic unit receives the comparator output and produces a component code that is used by the filter circuit to adjust one or more component values.

Abstract: A wireless communication node (10) dynamically estimates passive intermodulation (PIM) interference coupled into the node's receive path from the transmission of a composite signal through the node's transmit path. The node (10) then cancels the estimated PIM interference in the receive path. In some embodiments, the node dynamically estimates the PIM interference as a function of the composite signal that models PIM interference generation and coupling in the node (10) according to one or more coefficients (30). The coefficients (30) may be determined by transmitting a test signal (34) during a test stage, when the node (10) is not scheduled to receive any signal. Later, when the composite signal (18) is transmitted, the node (10) uses the coefficients (10) to dynamically estimate and cancel the resulting PIM interference.

Abstract: A portable terminal device includes a display module which can be set to be in a see-through state that a user can see-through a scenery behind, a display control module which controls the display module, a storage module which stores a destination position, a position obtaining module which obtains a current position, and a comparison module which compares the destination position and the current position. Then, the display control module displays information showing the destination position on the display module according to a comparison result of the comparison module, and sets a display area other than information showing the destination position on the display module to be in the see-through state.

Abstract: Methods and apparatus to obtain transaction information are described. One example method includes conducting a transaction using a proximity-based communication link, storing information related to the transaction in a database of a mobile device, identifying a service based on the information, querying the service from the mobile device, wherein the query is based on the information, and obtaining detail of the transaction from the service based on the information. Other implementations are possible.

Abstract: A method and system for handling a plurality of applications in a Near Field Communication (NFC) device is provided. The method is performed at a NFC Controller (NFCC). The method includes storing a source host identity (ID), a destination host ID and a link ID associated with each application from one or more applications. The method also includes managing the one or more applications simultaneously based on the source host ID, the destination host ID and the link ID stored in the NFCC.

Abstract: A technique for time tracking helps a mobile communication device with multiple SIMs to more accurately maintain synchronization with a base station. By utilizing synchronization information from both SIMs, the technique is able to more frequently and more accurately adjust timing information for each SIM. As a result, the mobile communication device exhibits an increased ability to accurately synchronize without the need for a higher precision reference or increased power consumption.

Abstract: The present invention relates to a method for acquiring radio measurements in a mobile communication system. In accordance with one embodiment of the invention, the method comprises the steps of.—within a serving cell (A) operated by a radio access node (eNBA) and serving a particular user equipment (UEX), sending measurement control information (meas_ctrl_info) from said radio access node to said particular user equipment whereby said particular user equipment is configured to perform radio measurements,—within a further serving cell (B) operated by a further radio access node (eNBB) and subsequently serving said particular user equipment, sending a measurement report (meas_report) from said particular user equipment to said further radio access node comprising measurement data (meas_data) as configured by said serving cell and a cell identifier (PCIA) of said serving cell,—transferring said measurement data from said further radio access node back to said radio access node.

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: A communication terminal and a driving method thereof are provided. The driving method of a communication terminal includes: forming a transmitting path and an absorption path by controlling a time division duplex (TDD) switch in a transmitting mode to isolate the transmitting path and the receiving path from an absorption path, the transmitting path transmitting a transmitting signal in a wireless scheme, and the absorption path diverged from the transmitting path through a circulator of the TDD switch to block a reflecting signal in the transmitting signal reversely transferred to the transmitting path; processing the transmitting signal through the transmitting path. Because a TDD switch has an isolation function, insertion loss in a transmitting path may be suppressed.

Abstract: A radiation passing layer has a top surface and a bottom surface below which a proximity sensor is positioned. A visible light opaque layer covers the bottom surface of the radiation passing layer except for an opening therein that allows radiation from the emitter to pass, and scattered radiation to pass to the detector. A radiation shield is between the emitter and the detector, and extends to the bottom of the radiation passing layer. A cold mirror is between the shield and the bottom surface of the radiation passing layer, covering the opening in the opaque layer. A radiation absorber being a separate piece and a different material than the shield provides a radiation seal between the top surface of the shield and the bottom surface of the cold mirror. Other embodiments are also described and claimed.

Abstract: A method for Link 16-based geolocation of hostile jammers comprising the steps of collecting jamming noise I/Q samples at a plurality of locations, determining the relative time delay of reception between two or more of the locations, determining the first derivative of the time delay of reception between the two or more locations, and using the results calculated in the preceding step to determine the position of the hostile jammers.

Abstract: A communication apparatus (200) has a calibration mode in which a signal is passed through circuitry (30, 80) of the apparatus, and a controller (160) measures the response of the circuitry (30, 80) to the signal and adjusts the circuitry (30, 80) to improve performance. The signal used for calibration has a wider bandwidth than the bandwidth of signals used for transmission. The wider bandwidth may be provided by reconfiguring a digital filter (20) from low-pass to high-pass.

Abstract: Electronic devices having improved battery configurations, and more specifically configurations reducing overall space required for a battery and attendant electronics, as well as providing restraining mechanisms to prevent a battery from impacting these electronics.

Abstract: A communications system includes a target receiver having a passband and configured to receive an intended signal within the passband. The communications system also includes a jammer configured to jam the target receiver from receiving the intended signal. The jammer has at least one antenna, a jammer receiver coupled to the at least one antenna, a jammer transmitter coupled to the at least one antenna, and a controller configured to cooperate with the jammer receiver. The controller is configured to detect the intended signal and to generate an interfering signal comprising a continuous phase modulation (CPM) waveform having a constant envelope so that the interfering signal at least partially overlaps the passband of the target receiver.

Abstract: Aspects of a method and system for estimating and compensating for non-linear distortion in a transmitter using calibration are presented. Aspects of the system may include one more circuits that may enable estimation, within a single IC device, of distortion in output signals generated by a transmitter circuit. The circuitry may enable compensation of the estimated distortion by predistorting subsequent input signals. The transmitter circuit may generate subsequent output signals based on the predistorted subsequent input signals.

Abstract: A near field communication (NFC) device and corresponding operating method are described. The method according to an embodiment includes establishing a NFC link with a different electronic device, which is executing a first application, through an NFC module of the electronic device; obtaining information related to the first application through the NFC link; and executing a second application related to the first application based on the obtained information.

Abstract: Implementations and techniques for model based Doppler compensation using traffic data are generally disclosed.

Abstract: A personnel access system may include a mobile device(s) comprising a first near field communication (NFC) device, a wireless device, and a first controller configured to generate an access request. An access control device may be associated with a personnel access position and include a second NFC device configured to receive the access request, and a second controller configured to generate a verification request for the mobile device(s) based upon the received access request. A verification device may be configured to receive the verification request from the access control device, and send a verification message to the mobile device(s). The first controller may be configured to receive the verification message via the wireless device, and generate verification data based thereon. The second controller may be configured to selectively grant personnel access based upon the verification data.

Abstract: Receiver architectures and methods of processing harmonic rich input signals employing harmonic suppression mixers are disclosed herein. The disclosed receivers, mixers, and methods enable a receiver to achieve the advantages of switching mixers while greatly reducing the mixer response to the undesired harmonics. A harmonic mixer can include a plurality of mixers coupled to an input signal. A plurality of phases of a local oscillator signal can be generated from a single local oscillator output. Each of the phases can be used to drive an input of one of the mixers. The mixer outputs can be combined to generate a frequency converted output that has harmonic rejection.

Abstract: Implementations and techniques for model based Doppler compensation using traffic data are generally disclosed.