Transmission Line Theory Applied to Digital Systems
Microstrip Transmission Line Techniques Evaluated Using TDR Measurements
11-29
Figure 11-14 shows a curve that approximates the change in the characteristic
impedance of the line for various ratios of ground plane width to active line
width. Note that when the ground width is greater than 3 times the line width,
the characteristic impedance is constant according to equation 14.
Figure 11-14
Variation of Microstrip Impedance as a Function of Ground Width - Line Width
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