diff --git a/paper/figures/field_plot_3d_n3_k4.pdf b/paper/figures/field_plot_3d_n3_k4.pdf
index c6b64da..2513222 100644
Binary files a/paper/figures/field_plot_3d_n3_k4.pdf and b/paper/figures/field_plot_3d_n3_k4.pdf differ
diff --git a/paper/paper.tex b/paper/paper.tex
index 06795db..8b8b3d5 100644
--- a/paper/paper.tex
+++ b/paper/paper.tex
@@ -374,7 +374,30 @@ higher frequencies that are easier to passively filter, as we originally intende
     \label{symmetry_10turn_n_twist}
 \end{figure}
 
-% field_plot_3d_n3_k4.pdf
+
+\begin{figure}
+    \begin{center}
+        \includegraphics[width=\linewidth]{figures/field_plot_3d_n3_k4.pdf}
+    \end{center}
+    \caption{The coupling between a pair of identical coils (here with $n=3$ and $k=4$) visualized in three dimensions.
+    The $x$ and $y$ axis show in-plane displacement, and the $z$ axis shows output amplitude in arbitrary units. Height
+    and rotation are fixed to \qty{1}{\milli\meter} and \qty{15}{\degree}, respectively. The most prominent aspects of
+    this plot are that coupling falls off steeply with distance, and that the rotation-dependent variation is small in
+    comparison. The circular valley around the central peak is the region where one inductor is mostly outside the other
+    inductors, and intersects the field lines returning from the other inductor's back, leading to a negative coupling
+    coefficient.}
+    \label{fig_field_plot_3d}
+\end{figure}
+
+\begin{figure}
+    \begin{center}
+        \includegraphics[width=\linewidth]{figures/test_schematic.pdf}
+    \end{center}
+    \caption{The test schematic used in all measurements. For direct coupling factor measurements, the load resistor was
+    disconnected. We measure voltage at the output of the function generator to account for drop in its internal output
+    resistance.}
+    \label{fig_test_schematic}
+\end{figure}
 % rms_ripple_double_rotation_n25_r4.pdf
 % rms_ripple_double_rotation_n5_r4.pdf
 % rms_ripple_double_rotation_n3_r4.pdf