Its impedance matches the device internal tuning capacitance value (Ctuning) to create a circuit resonating at 13.56 MHz. The basic equation of the tuning frequency is: ftuning = --------------------------------
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A basic model that does not include self-resonating parallel capacitance would not suffice in this case. Choosing a frequency-domain model – such as the Coilcraft RF inductor model – that includes Laplace elements and parallel capacitance with series resistance to capture the peak of resonance, i...
As force is applied to the sensor, an electric charge is generated which can be measured as a voltage proportional to the pressure. The advantage of piezoelectric sensors is in their high frequency response and high sensitivity to dynamic touch. The nature of piezoelectric materials having very ...
When the RF radiation is turned off, the atoms continue to resonate. Eventually, the resonating atoms return to their natural state and, in doing so, emit a radiofrequency radiation that is an NMR signal. The signal is then processed through a computer and converted into a visual image of ...
Since only two measurements are needed, tuning is quick only taking about 14mS total for this portion of the tuning work. Oscillator Offset The second part of the oscillator tuning process involves calculating the correct value for the main DAC, based on the key pressed (e.g., frequency requ...
Its impedance matches the device internal tuning capacitance value (Ctuning) to create a circuit resonating at 13.56 MHz. The basic equation of the tuning frequency is: ftuning = ---1--- 2Π × Lantenna × Ctuning AN2972 Rev 9 5/26 25 Basic principles and equations 2 Basic principl...
Traditional models that use a fixed value parallel resistor to model core loss do not capture frequency-dependent (AC) loss. Even when a frequency-dependent parallel resistor is used, this type of model often has poor correlation with real measurements of core loss at higher current. The ...
Its impedance matches the device internal tuning capacitance value (Ctuning) to create a circuit resonating at 13.56 MHz. The basic equation of the tuning frequency is: ftuning = ---1--- 2Π × Lantenna × Ctuning AN2972 Rev 9 5/26 25 Basic principles and equations 2 Basic principles...
Its impedance matches the device internal tuning capacitance value (Ctuning) to create a circuit resonating at 13.56 MHz. The basic equation of the tuning frequency is: ftuning = ---1--- 2Π × Lantenna × Ctuning AN2972 Rev 9 5/26 25 Basic principles and equations 2 Basic principles...