One hundred-fifty-ohm STP-A and UTP are geometrically and electrically very similar. You will find a discussion of 150- W STP-A signal propagation in Section 8.1, "UTP Signal Propagation."
Fundamentals
Transmission Line Parameters
Performance Regions
Frequency-Domain Modeling
Pcb (printed-circuit board) Traces
Differential Signaling
Generic Building-Cabling Standards
100-Ohm Balanced Twisted-Pair Cabling
150-Ohm STP-A Cabling
Coaxial Cabling
Fiber-Optic Cabling
Clock Distribution
Time-Domain Simulation Tools and Methods
Points to Remember
Appendix A. Building a Signal Integrity Department
Appendix B. Calculation of Loss Slope
Appendix C. Two-Port Analysis
Appendix D. Accuracy of Pi Model
Appendix E. erf( )
Notes