diff --git a/paper/figures/symmetry_3turn_n_twist.pdf b/paper/figures/symmetry_3turn_n_twist.pdf
index 1cfd58d..5629093 100644
Binary files a/paper/figures/symmetry_3turn_n_twist.pdf and b/paper/figures/symmetry_3turn_n_twist.pdf differ
diff --git a/paper/paper.tex b/paper/paper.tex
index cf49f8f..fbd051a 100644
--- a/paper/paper.tex
+++ b/paper/paper.tex
@@ -306,10 +306,10 @@ In conclusion, we observe that twisted inductors \emph{improve} high-frequency p
 inductors while closely matching them in ESR and inductance. While they peform worse than simple single-layer inductors
 in high-frequency performance, the increased trace width that two-layer inductors allow for lowers resistive losses by
 approximately a factor of four. In applications where resistive losses lead to the choice of a two-layer inductor,
-twisted inductors provide improved high-frequency performance at no additional cost and without compromising on other
+twisted inductors provide improved high-frequency performance at no additional cost and without compromising other
 performance parameters.
 
-\begin{table}
+\begin{table*}
     \begin{tabular}{cc|ccc|}
         Turn Count $n$&
         Trace pair count $k$&
@@ -319,10 +319,33 @@ performance parameters.
     \end{tabular}
     \caption{Inductor sample design parameters and measured characteristics. All inductors have outer diameter
     \qty{35}{\milli\meter} and inner diameter \qty{15}{\milli\meter}.}
-\end{table}
+\end{table*}
 
 \subsection{Coupling}
 
+The key performance criterion in our application is the voltage ripple that appears on the secondary side of a WPT link
+when one of the inductors is rotating. To experimentally evaluate the magnitude of this ripple in a realistic scenario
+across a large set of rotations and relative displacements, we created a test setup consisting of a 3D gantry built from
+an old 3D printer, with a fourth rotation axis provided by a small servo that allows us to position two inductor test
+coupons at arbitrary offsets and angles to one another while measuring their coupling.
+
+To evaluate a realistic scenario, we loaded the secondary inductor with a resistive load of \qty{10}{\ohm}, while
+providing a signal at a \qty{300}{\kilo\hertz} carrier frequency to the primary inductor from a Siglent SDG6022X
+function generator. We measured both the input and output voltages of the coupled inductor pair using Keysight 34465A
+multimeters in AC RMS mode. The results of these measurements, with the voltage ratio between the coupled inductors'
+input and output voltages graphed across one revolution in Figure\ \ref{symmetry_3turn_n_twist} for a set of three-turn
+inductors and in Figure\ \ref{symmetry_10turn_n_twist} for a set of 10-turn inductors  with multiple trace pair amounts
+$k$.
+
+From these graphs we observe slightly lower coupling for $k>0$ compared to a single-layer spiral inductor, which is
+in line with our previous inductance measurements. Across one revolution, we find that single-layer spiral inductors
+exhibit the worst voltage ripple, with simple two-layer inductors with $k=1$ already improving ripple by a large margin.
+Increasing $k$ above $1$ does not decrease the amplitude of this ripple further, but it does shift the ripple into
+higher frequencies that are easier to passively filter, as we originally intended.
+
+\todo{new ripple measurements, concrete coupling factor measurements}
+\todo{schematics for illustration of measeurement circuits}
+
 \begin{figure}
     \begin{center}
         %\includegraphics[width=0.7\linewidth]{figures/symmetry_3turn_n_twist.pdf}