08/01/2026
Prashant Kumar GautamPrashant Kumar Gautam • 2nd PCB Design Engineer l Solar Inverters l Home UPS l Power Electronics l BMS l EV Chargers l IoT Device l Smart MeteringPCB Design Engineer l Solar Inverters l Home UPS l Power Electronics l BMS l EV Chargers l IoT Device l Smart Metering 2d •
2 days ago • Visible to anyone on or off LinkedIn
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✅️Understanding Microstrip and Stripline in PCB Design
In high-speed and RF PCB designing, controlled impedance routing plays a very important role. Two commonly used transmission line structures are Microstrip and Stripline. Understanding the difference between them helps in making better design decisions.
🟢Microstrip
A microstrip is a signal trace placed on the top layer of the PCB, with a ground plane on the bottom layer and FR4 material in between.
It is widely used in RF circuits, antenna feed lines, and high-speed signals because it is easy to design, debug, and manufacture.
Key points:
Signal trace on outer layer
Ground plane on one side
Easy to route and tune
Slightly higher EMI compared to stripline
🟢Stripline
A stripline is a signal trace routed on an inner layer of a multilayer PCB, sandwiched between two ground planes.
Because the signal is fully enclosed by dielectric material, it provides better EMI control and stable impedance.
Key points:
Signal trace on inner layer
Ground planes on both sides
Very low EMI and crosstalk
More complex design and higher PCB cost
🟢Conclusionp
Microstrip is preferred for simpler RF designs and antenna routing.
Stripline is used for critical, noise-sensitive, and high-speed signals where signal integrity is the highest priority.
