摘要:
A harmonic rejection mixer for carrying out a frequency translation of a mixer input signal having a mixer input frequency, the mixer including an up-conversion mixer for generating an intermediate signal by multiplying the mixer input signal with a first local oscillation signal having a first local oscillation frequency, and a down-conversion mixer for generating a mixer output signal by multiplying the intermediate signal with a second local oscillation signal having a second local oscillation frequency. The first local oscillation frequency and the second local oscillation frequency are greater than the mixer input frequency. The first local oscillation signal is an l-time oversampled sine wave and the second local oscillation signal is an m-time oversampled sine wave.
摘要:
A frequency divider having a plurality of programmable latches connected in a feedback shift register configuration. A programmable latch of said plurality of latches comprises a program input to receive a program signal configured to select a polarity of the programmable latch among two opposite polarities. The frequency divider having a configuration module structured to provide at least the program signal to the program input to modify a divisor parameter of the frequency divider.
摘要:
A current-controlled resistor comprises a first input terminal configured to receive an input signal and a second input terminal configured to receive a current control signal. The resistor comprises a first stage configured to receive the current control signal; the first stage includes first and second PN diodes having first terminals of a first type and second terminals of a second type. The first terminals of the first and second PN diodes are coupled each other and a second terminal of the first PN diode is coupled to the first input terminal. The resistor comprises a second stage configured to receive the current control signal; the second stage includes a third PN diode having first and second terminals of the first and second types, the second terminal of the third PN diode being coupled to the second terminal of the second PN diode.
摘要:
A continuous time sigma-delta analog-to-digital converter comprising: a summator of an input analog signal and a feedback signal; a feed-forward integrator path connected to the summator and configured to provide a digital signal; a feedback digital-to-analog converter to convert the digital signal into a feedback analog signal; a feedback low pass filter structured to filter the feedback analog signal and provide the feedback signal to the summator.
摘要:
A harmonic rejection mixer for carrying out a frequency translation of a mixer input signal having a mixer input frequency, the mixer including an up-conversion mixer for generating an intermediate signal by multiplying the mixer input signal with a first local oscillation signal having a first local oscillation frequency, and a down-conversion mixer for generating a mixer output signal by multiplying the intermediate signal with a second local oscillation signal having a second local oscillation frequency. The first local oscillation frequency and the second local oscillation frequency are greater than the mixer input frequency. The first local oscillation signal is an l-time oversampled sine wave and the second local oscillation signal is an m-time oversampled sine wave.
摘要:
A continuous time sigma-delta analog-to-digital converter comprising: a summator of an input analog signal and a feedback signal; a feed-forward integrator path connected to the summator and configured to provide a digital signal; a feedback digital-to-analog converter to convert the digital signal into a feedback analog signal; a feedback low pass filter structured to filter the feedback analog signal and provide the feedback signal to the summator.
摘要:
A harmonic rejection mixer includes a differential in-phase signal path and a differential quadrature signal path, a shared differential transconductor for generating a shared transconductor output signal from a mixer input signal, a first selective mixing circuit disposed in the differential quadrature signal path and coupled to the shared differential transconductor, and a second selective mixing circuit disposed in the differential in-phase signal path and coupled to the shared differential transconductor, the first selective mixing circuit is controlled by a first selective control signal and the second selective mixing circuit is controlled by a second selective control signal to selectively supply the shared transconductor output signal to the differential quadrature signal path and the differential in-phase signal path, respectively.
摘要:
The invention relates to a dental impression material containing a rheological modifier. The rheological modifier is in particular useful for adjusting shear-thinning properties of non-water based dental impression materials, especially of precision impression materials. It further relates to a method for producing a dental impression material.
摘要:
An image frequency rejection mixer has a first differential transconductor that receives a differential mixer input signal, a second differential transconductor that receives the differential mixer input signal and cross-coupled to the first differential transconductor, a first mixing circuit that generates a first differential mixing circuit output signal by mixing a first differential information signal with a first local oscillation signal, a second mixing circuit that generates a second differential mixing circuit output signal by mixing a second differential information signal with a second local oscillation signal, with the first local oscillation signal and the second local oscillation signal being in quadrature, and an image rejection circuit that generates a differential mixer output signal from the first and second differential mixing circuit output signals.
摘要:
A harmonic rejection mixer includes a differential in-phase signal path and a differential quadrature signal path, a shared differential transconductor for generating a shared transconductor output signal from a mixer input signal, a first selective mixing circuit disposed in the differential quadrature signal path and coupled to the shared differential transconductor, and a second selective mixing circuit disposed in the differential in-phase signal path and coupled to the shared differential transconductor, the first selective mixing circuit is controlled by a first selective control signal and the second selective mixing circuit is controlled by a second selective control signal to selectively supply the shared transconductor output signal to the differential quadrature signal path and the differential in-phase signal path, respectively.