4.2 Impedance and Admittance
165
Figure 4.2-21 Parallel R-L network, voltage and current waveforms
Figure 4.2-22 shows a representation of the admittance of the R-L network in the complex plane.
Figure 4.2-22 Representation of or in the complex plane
Remember that the angle of the admittance is and, since the voltage leads the current in an
inductive network, this angle is negative. This is just the opposite of what we had for the impedance
of an inductive network (Figure 4.2-13).
0 0.5 1 1.5 2
Time (ns)
parallel_R_L
-1
-0.5
0
0.5
1
-60
-30
0
30
60
p2
p1
1.412 ns
40.6 mA
1.246 ns
0.9996 V
0.6681 ns
0 mA
0.5 ns
0 V
Vtime(M_PROBE.VP1,1)[*] (L, V)
parallel_R_L
Itime(ACVS.V1,1)[*] (R, mA)
parallel_R_L
p1: Freq = 1000 MHz
p2: Freq = 1000 MHz
Freq = 1000 MHz
-60.5ι
20
35.3j
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