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AntennaElm.java
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AntennaElm.java
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import java.awt.*;
import java.util.StringTokenizer;
class AntennaElm extends RailElm {
public AntennaElm(int xx, int yy) { super(xx, yy, WF_DC); }
public AntennaElm(int xa, int ya, int xb, int yb, int f,
StringTokenizer st) {
super(xa, ya, xb, yb, f, st);
waveform = WF_DC;
}
double fmphase;
void stamp() {
sim.stampVoltageSource(0, nodes[0], voltSource);
}
void doStep() {
sim.updateVoltageSource(0, nodes[0], voltSource, getVoltage());
}
double getVoltage() {
fmphase += 2*pi*(2200+Math.sin(2*pi*sim.t*13)*100)*sim.timeStep;
double fm = 3*Math.sin(fmphase);
return Math.sin(2*pi*sim.t*3000)*(1.3+Math.sin(2*pi*sim.t*12))*3 +
Math.sin(2*pi*sim.t*2710)*(1.3+Math.sin(2*pi*sim.t*13))*3 +
Math.sin(2*pi*sim.t*2433)*(1.3+Math.sin(2*pi*sim.t*14))*3 + fm;
}
int getDumpType() { return 'A'; }
int getShortcut() { return 0; }
}