Contents
How can trace inductance be reduced?
Reducing Parasitic Capacitance and Inductance Reducing parasitic inductance requires making the equivalent loop area covered by traces as small as possible. The best way to do this is to place the ground plane for critical traces directly above the layer containing your ground plane.
Does a single wire have inductance?
Even a single, straight piece of wire has some inductance! We generally associate inductance with a loop or coil of wire. However, even a straight piece of wire, or your electrode, has some self-inductance. This can be important if you are dealing with low impedances (< 1 ohm) at high frequencies (> 10kHz).
How to calculate the inductance of a trace?
Trace Inductance calculator for wide traces over a ground plane with trace width (W) much larger than substrate thickness (T). Relative Permeability is assumed to be 1. Low frequency, perfect conductor: no skin effect.
How is the inductance of a microstrip calculated?
A microstrip is created by etching a trace on a printed circuit board and is mostly used in microwave applications. This calculator is designed to calculate the inductance of a microstrip given its dimensions (width, length and the distance of the strip from the ground plane).
What is the inductance of a PCB trace?
The inductance of a ~1 in. trace is typically quoted as being 5 to 10 nH. For the optimized trace I’ve designed with this model, the total inductance for a length of 1 in. is 7.4168 nH, which is within the range normally measured for small PCB traces.
How is trace inductance affected by the return path?
Also you don’t really just measure trace inductance, inductance is measured in a loop so you have to account for your trace and it’s return path to get the full picture. Trace inductance is affected by width, but also more so by the distance between the two connection points.