These two are found by the diode voltage
turn-on and the diode leakage reverse current.
Measuring the diode voltage
at two currents is equivalent to the ADI or TI approach--the saturation current drops out of the equation.
where [t.sub.Q2dt] is the Q2 dead time, [I.sub.OLED] is the output current to the OLED and [V.sub.SD] is the intrinsic body diode voltage
drop of Q2.
Although the diodes [D.sub.3] and [D.sub.4] were not matched, there was no need for voltage sharing capacitors across the diodes since the diode voltage
rating (600 V) is significantly higher than the required diode blocking voltage (around 400 V).
Time varying diode voltage
([V.sub.t](t)) and time varying avalanche zone voltage drop ([V.sub.a](t)) at any instant t can be obtained from the numerical integration of the field profile over the depletion layer and avalanche layer widths, respectively.
Figures 10(a) and 10(b) show the switch voltage, diode voltage
, and inductor current waveforms for the positive input voltage and negative voltage.
The authors in  designed a square microstrip antenna with 50 [OMEGA] impedance and used a 6-stage Schottky diode voltage
doubler to form an RF energy harvesting system at 900 MHz band.
Mean values for diode voltage
[V.sub.d] and current [I.sub.d] are measured (Fig.
The diode voltage
is a pulse train and it would be very convenient to insert an ac transformer at that location.
The equation of the tangent to this equi-resistance curve at the diode voltage
[V.sub.x] and corresponding current [I.sub.x] at temperature [T.sub.x] is given by