Circuit Envelope Elements Capacitor (CE) Gnd (CE) Ideal Transformer (CE) Inductor (CE) Resistor (CE) Amplifier (CE) Mixer (CE) LC Ladder (CE) Filter (CE) Variable Inductor (CE) Variable Capacitor (CE) Attenuator (CE) Three-Winding Transformer (CE) Signal Combiner (CE) Variable Attenuator (CE) Variable Resistor (CE) Phase Shift (CE) Transmission Line (CE) Z (CE) Junctions Coupler (CE) Circulator (CE) Divider (CE) SPDT (CE) SPST (CE) Switch (CE) Wilkinson Power Divider (CE) Sources Sinusoid (CE) Utilities Inport (CE) Outport (CE) Configuration (CE)