Abstract: We disclose a system and method for estimating values of hemodynamic parameters of a subject, by calibrating arterial pressure during one time and tracking arterial pressure at another time.

Abstract: We disclose a system and method for estimating values of hemodynamic parameters of a subject, by calibrating arterial pressure during one time and tracking arterial pressure at another time.

Abstract: We disclose a system and method for estimating values of hemodynamic parameters of a subject, by calibrating arterial pressure during one time and tracking arterial pressure at another time.

Abstract: We disclose a system and method for estimating values of hemodynamic parameters of a subject, by calibrating arterial pressure during one time and tracking arterial pressure at another time.

Abstract: We disclose a system and method for estimating values of hemodynamic parameters of a subject, by calibrating arterial pressure during one time and tracking arterial pressure at another time.

Abstract: This invention provides conformal antenna structures, how to make and use the antenna structures, and systems in which the antenna structures may be used for biometric sensing of humans and other animals. The antenna structures of the invention includes at least one relatively flexible section connecting relatively rigid sections. The relatively flexible section connecting relatively rigid sections may flex so that the relatively rigid sections connected to the relatively flexible section can change orientation relative to one another. This allows the relatively rigid sections to be conformed to a region of a surface of a human or animal that is not flat (that is curved).

Abstract: This invention provides conformal antenna structures, how to make and use the antenna structures, and systems in which the antenna structures may be used for biometric sensing of humans and other animals. The antenna structures of the invention includes at least one relatively flexible section connecting relatively rigid sections. The relatively flexible section connecting relatively rigid sections may flex so that the relatively rigid sections connected to the relatively flexible section can change orientation relative to one another. This allows the relatively rigid sections to be conformed to a region of a surface of a human or animal that is not flat (that is curved).

Abstract: Methods, apparatuses, devices and systems for measuring the arterial blood pressure in humans and mammals by estimating the time varying arterial diameter using electromagnetic fields in the microwave spectrum (for example), are disclosed. Embodiments may be suitable for wearable devices, and for use by medical practitioners.

Abstract: A signal processing device includes a device package, processing circuitry and biasing circuitry. The processing circuitry is packaged in the device package and is operative to receive one or more Radio Frequency (RF) input signals from one or more antenna elements via one or more pre-amplifiers that are separate from the device, and to process the RF input signals so as to produce an RF output signal. The biasing circuitry is packaged in the device package and is operative to produce one or more biasing signals for biasing the pre-amplifiers.

Abstract: A signal processing device includes a device package, processing circuitry and biasing circuitry. The processing circuitry is packaged in the device package and is operative to receive one or more Radio Frequency (RF) input signals from one or more antenna elements via one or more pre-amplifiers that are separate from the device, and to process the RF input signals so as to produce an RF output signal. The biasing circuitry is packaged in the device package and is operative to produce one or more biasing signals for biasing the pre-amplifiers.

Abstract: A method for communication includes transmitting first and second copies of a signal toward first and second satellite transponders, respectively, so as to cause the first and second satellite transponders to transmit respective first and second downlink signals with mutually-orthogonal linear polarizations toward a coverage region. A correction is applied to at least one of the first and second copies before transmitting the first and second copies. The correction is selected so as to remove a frequency offset between the first and second downlink signals and cause the first and second downlink signals to have a constant phase offset in at least some of the coverage region.

Abstract: Briefly, a transmitter that includes first and second fractional N synthesizers that may generate outphased modulated signals. First and second sigma-delta modulators may control the modulation of the first and second fractional N synthesizers.

Abstract: A method for communication includes transmitting first and second copies of a signal toward first and second satellite transponders, respectively, so as to cause the first and second satellite transponders to transmit respective first and second downlink signals with mutually-orthogonal linear polarizations toward a coverage region. A correction is applied to at least one of the first and second copies before transmitting the first and second copies. The correction is selected so as to remove a frequency offset between the first and second downlink signals and cause the first and second downlink signals to have a constant phase offset in at least some of the coverage region.

Abstract: A signal processing device includes a device package, processing circuitry and biasing circuitry. The processing circuitry is packaged in the device package and is operative to receive one or more Radio Frequency (RF) input signals from one or more antenna elements via one or more pre-amplifiers that are separate from the device, and to process the RF input signals so as to produce an RF output signal. The biasing circuitry is packaged in the device package and is operative to produce one or more biasing signals for biasing the pre-amplifiers.

Abstract: A source binary code that complies with a source architecture is translated to a target binary code that complies with a target architecture. The target binary code includes a first target portion translated from a respective source portion of the source binary code. During execution of the target binary code on a processor that complies with a target architecture, it is determined whether to retranslate the source portion to produce a second target portion that is more optimized to the target architecture than the first target portion or to retranslate the source portion to produce a third target portion that is more optimized to the target architecture than the second target portion.

Abstract: Briefly, a transmitter that includes first and second fractional N synthesizers that may generate outphased modulated signals. First and second sigma-delta modulators may control the modulation of the first and second fractional N synthesizers.

Abstract: Briefly, a transmitter that includes first and second fractional N synthesizers that may generate outphased modulated signals. First and second sigma-delta modulators may control the modulation of the first and second fractional N synthesizers.

Abstract: A filter includes an input and an output. First and second filter stages having respective stage inputs and stage outputs are connected in cascade between the input and the output. Each filter stage includes an amplifier having an amplifier input and an amplifier output and an inner feedback loop connecting the amplifier output to the amplifier input. An outer feedback loop connects the stage output of the second filter stage with the stage input of the first filter stage. The first and second filter stages and the outer feedback loop are arranged so that an s-space closed-loop transfer function of the filter includes two zeros and a single pole.

Abstract: Briefly, in accordance with one embodiment of the invention, a multi-mode receiver comprises a programmable baseband module to filter a modulated signal according to the characteristics of the receiving mode. The programmable baseband module may further comprise a programmable convolver capable of switching between the receiving modes of the multi-mode receiver by programming an impulse response of a filter to the programmable convolver.

Abstract: A phase generator includes at least one input port for accepting a reference signal having a frequency, a plurality of n output ports, n>4, and a network of phase-shifting elements coupled in a circularly-symmetrical configuration between the at least one input port and the output ports. The network of phase-shifting elements has a symmetry increment of 360/n degrees. The phase generator generates at the output ports respective polyphase signals at the frequency, the polyphase signals having respective phases that are consecutive integer multiples of 360/n degrees.