Abstract: As solution for predistorting a signal is presented. The solution comprises receiving (600) as an input a signal comprising at least two signal components on a different band, sampling (602) the input signal comprising linear terms, composite non-linear terms causing intermodulation outside Nyquist band of the input signal and further non-linear terms causing intermodulation inside the Nyquist band, the further non-linear terms comprising multi-band terms. Oversampling (604) by a given factor is applied to the signal in a first predistortion circuit for processing the linear terms and composite non-linear terms causing intermodulation outside Nyquist band; processing (606) the input signal without oversampling in a second predistortion circuit in parallel with the first predistortion circuit for the further non-linear terms. The rates of the output signals of the predistortion circuits are matched (608), combined and filtered (610).

Abstract: This specification relates to digital pre-distortion of signals before power amplification during the transmission of a signal. A method comprising: receiving an input signal 1st and 2nd subband signals associated with 1st and 2nd centre frequencies; applying a pre-distortion to the input signal to generate a pre-distorted signal, the pre-distortion applying an inverse to a power amplification model associated with a power amplifier; and outputting the pre-distorted signal for power amplification. The power amplification model or the inverse to the power amplification model comprises a first plurality of terms and a second plurality of terms. Each of the 1st and 2nd plurality of terms comprising a product of a complex coefficient, a power factor, and other factors depending on if it is 1st or 2nd plurality of terms.

Abstract: An apparatus is disclosed, comprising means for providing two or more amplifiers for amplifying signals in two or more respective frequency bands, receiving a composite signal comprising first and second predistorted input signals in first and second frequency bands and filtering the composite signal to provide (i) the first predistorted signal for input to a first amplifier of the two or more amplifiers for producing an amplified first output signal and (ii) the second predistorted signal for input to a second amplifier of the two or more amplifiers for producing an amplified second output signal. The apparatus may also comprise means for routing, at non-overlapping times, the first and second output signals to a common feedback path and for linearizing received first and second input signals based on the respective first and second output signals received on the common feedback path.

Abstract: A method comprising receiving radio frequency tracker identifiers stored by tags associated with items; evaluating the radio frequency tracker identifiers based on radio frequency tracker identifiers previously received or concurrently received; identifying one or more radio frequency tracker identifiers based on the evaluating; selecting a rule from a set of rules when it is determined that an event occurred with respect to the identified one or more radio frequency tracker identifiers, wherein the set of rules correlates with information included in the radio frequency tracker identifiers and the selected rule pertains to an occurrence of the event; selecting a responsive action based on the selected rule; and generating a notification defined by the selected responsive action.

Abstract: A printing system including a printing device operable for applying one or more inks onto a substrate, and a heating device operable for heating the substrate prior to application of the one or more inks onto the substrate.

Abstract: A protective shield may include an inboard shield assembly having an inboard shield and an inboard base. The inboard shield may include a forward plate fixed at an angle to a center plate and a rear plate fixed at an angle to the center plate. The center plate may include a window opening and a window fixed over the window opening. The protective shield may also include an outboard shield assembly having an outboard shield and an outboard base. The outboard shield may include a forward plate fixed at an angle to a center plate and a rear plate fixed at an angle to the center plate. The center plate may include a window opening and a window fixed over the window opening. A splice plate may connect portions of the inboard and outboard bases.

Abstract: An armor kit may include a weapon shield having a front plate with a weapon barrel opening and at least one window opening; a rotating outboard shield including a front panel connected to a center panel and a rear panel connected to the center panel, each of the front, center, and rear panels including a window opening and a window disposed over the window opening; a rotating inboard shield having an upper portion that is solid and a lower portion with a viewing aperture, the rotating inboard shield being located generally opposite the rotating outboard shield, the rotating inboard shield and the rotating outboard shield being simultaneously rotatable and maintaining fixed positions relative to each other; and a stationary inboard shield located in an interior of a circle of rotation of the rotating inboard shield and the rotating outboard shield.

Abstract: A method comprising receiving radio frequency tracker identifiers stored by tags associated with items; evaluating the radio frequency tracker identifiers based on radio frequency tracker identifiers previously received or concurrently received; identifying one or more radio frequency tracker identifiers based on the evaluating; selecting a rule from a set of rules when it is determined that an event occurred with respect to the identified one or more radio frequency tracker identifiers, wherein the set of rules correlates with information included in the radio frequency tracker identifiers and the selected rule pertains to an occurrence of the event; selecting a responsive action based on the selected rule; and generating a notification defined by the selected responsive action.

Abstract: A protective folding shield for mounting to a rail of a vehicle may include a generally rectangular shield; a base stand fixed to a first side of the shield; a shim fixed to the first side of the shield and spaced apart from the base stand; a hinge fixed to the base stand and the shim; a base fixed to the base stand; a pair of latch bases fixed to the base adjacent a second side of the shield; a pair of latch uprights fixed to the second side of the shield wherein, in a substantially vertical position of the generally rectangular shield, the pair of latch uprights are removably fixed to respective ones of the latch bases; and a plurality of clamps fixed to the base wherein the rail is disposed between the clamps and the base.