Microstrip Capacitance

Microstrip Capacitance

Microstrip Capacitance Capacitance Calculators

Microstrip Capacitance Model
Capacitance between the upper conductor and ground plane is:
CapacitanceNarrowMicrostripFormula

CapacitanceWideMicrostripFormula

Units: Farads

Description
The capacitance calculated using this tool is the capacitance between a flat conductor and the ground plane over the conductor length.

Assumptions and Limitations
Dimensions are in meters.
Ground plane is assumed to be perfectly conducting and of infinite extent.
Conductor is assumed to have zero thickness and to have uniform height above ground.
Conductor and ground plane are assumed to be separated by a homogeneous medium having permittivity e=e0er and permeabilityu=u0.

Constants
Permeability of free space: Formula, Permeability of Free Space H/m
Permittivity of air: Formula, Permittivity of Air F/m
Speed of light in a vacuum: Formula, Speed of Light in Vacuumm/s

Reference: “Inductance Loop and Partial”, C.R. Paul, Wiley, 2010.

microstripformula_feat-402x270

Inputs

Width
w
Height above ground
h
Length
l
Relative Permittivity

Outputs

Capacitance: C = 
8.063e-12 F