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\section{Proposed Ideas}
\label{sec:Proposed Ideas}

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% 	\frametitle{Overview of Proposed Design}
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% 	\vspace*{-5mm}
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% 	\begin{itemize}
% 		\item Paper by Maiwald, \emph{et al}. \citereference{Mai+21}
% 	\end{itemize}
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% 			\fbox{\includegraphics[page=1,width=.6\textwidth]{res/paper/mixer_paper}}
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% 			\fbox{\includegraphics[page=2,width=.6\textwidth]{res/paper/mixer_paper}}
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% 			\fbox{\includegraphics[page=4,width=.6\textwidth]{res/paper/mixer_paper}}
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% 	\begin{itemize}
% 		\item Spec 1
% 		\item Spec 2
% 		\item Spec 3
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% 	\bigskip
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% 	\addreference{Mai+21}{T. Maiwald et al., "A Broadband Zero-IF Down-Conversion Mixer in 130 nm SiGe BiCMOS for Beyond 5G Communication Systems in D-Band," in IEEE Transactions on Circuits and Systems II: Express Briefs, vol. 68, no. 7, pp. 2277-2281, July 2021}
% \end{frame}

\begin{frame}[t]
	\frametitle{Proposed Design: Overview}

	\vspace*{-7mm}

	\begin{itemize}
		\item Paper by Maiwald, \emph{et al}. \citereference{Mai+21}
	\end{itemize}

	\vspace*{1mm}

	\begin{figure}[h]
		\centering

		\begin{subfigure}[c]{0.33\textwidth}
			\centering

			\fbox{\includegraphics[page=1,width=.6\textwidth]{res/paper/mixer_paper}}
		\end{subfigure}%
		\begin{subfigure}[c]{0.33\textwidth}
			\centering

			\includegraphics[width=\textwidth]{res/paper/figure1}
		\end{subfigure}%
	\end{figure}

	\vspace*{1mm}

	\begin{itemize}
		\item High bandwidth, low power consumption, small size
		\item Applicable to electronic beam stearing for mm-Wave
		\item SiGe BiCMOS technology (B11HFC) from Infineon Technologies AG with $f_\text{t}/f_\text{max}$ of $250/\SI{370}{\giga\hertz}$
	\end{itemize}

	\vspace*{2mm}
	\addreference{Mai+21}{T. Maiwald et al., ``A Broadband Zero-IF Down-Conversion Mixer in 130 nm SiGe BiCMOS for Beyond 5G Communication Systems in D-Band'', in \emph{IEEE Transactions on Circuits and Systems II: Express Briefs}, vol. 68, no. 7, pp. 2277-2281, July 2021}
\end{frame}

%\begin{frame}
%	\frametitle{Semiconductor Technology}
%
%	\begin{itemize}
%		\item [TODO] (Maybe move to paper overview slide)
%		\item [TODO] "130 nm SiGe BiCMOS technology with a ft/fmax
%		      of 250/370 GHz from Infineon Technologies AG." (SG13G2) vs
%		      "SiGe BiCMOS process technology from IHP Microelectronics
%		      with fmax of 500 GHz" (B11HFC)
%		      -> Same kind of technology, different manufacturerer and fmax
%	\end{itemize}
%\end{frame}

\begin{frame}[fragile]
	\frametitle{Proposed Design: Mixer Core Cell}

	\begin{minipage}{.5\textwidth}
		\begin{itemize}
			\item Usage of switching quad (SQuad) instead of conventional Gilbert cell for more voltage headroom
			\item Mixer loaded by modified Cherry-Hooper \citereference{CH63} transimpedance amplifier (TIA)
			\item Transmission line based differential L-type matching networks for high bandwidth
			\item Signal fed using marchand baluns for high bandwidth
		\end{itemize}
	\end{minipage}%
	\begin{minipage}{.5\textwidth}
		\centering

		\vspace*{-2mm}
		\begin{figure}[H]
			\centering
			\includegraphics[width=0.96\textwidth]{res/paper/figure6}
		\end{figure}
	\end{minipage}%

	\vspace{3mm}
	\addreference{CH63}{E.M. Cherry and D.E. Hooper, ``The design of wide-band transistor feedback amplifiers'', \emph{Proceedings of the Institution of Electrical Engineers}, vol. 110, pp. 375-389, February 1963}
\end{frame}

\begin{frame}[fragile]
	\frametitle{Proposed Design: IF Buffer}

	\vspace*{5.775mm}
	\begin{minipage}{.5\textwidth}
		\begin{itemize}
			\item Three-stages: two differential amplifier stages and an emitter follower
			\item Includes differential to single-ended conversion enabling dense chip-to-package transition
			\item Inductive peaking for bandwidth enhancement
		\end{itemize}
	\end{minipage}%
	\begin{minipage}{.5\textwidth}
		\centering

		\begin{figure}[H]
			\centering
			\includegraphics[width=0.96\textwidth]{res/paper/figure7}
		\end{figure}
	\end{minipage}%
\end{frame}

\begin{frame}
	\frametitle{Proposed Design: Simulation/Measurement Results}

	\vspace*{-1mm}
	\begin{minipage}{.5\textwidth}
		\vspace*{-2mm}
		\begin{figure}[H]
			\centering
			\includegraphics[width=0.9\textwidth]{res/paper/figure9}
		\end{figure}
		\vspace*{-3mm}
		\begin{figure}[H]
			\centering
			\hspace*{-7mm}
			\includegraphics[width=0.9\textwidth]{res/paper/figure11}
		\end{figure}
	\end{minipage}%
	\begin{minipage}{.5\textwidth}
		\vspace*{-2mm}
		\begin{figure}[H]
			\centering
			\includegraphics[width=0.9\textwidth]{res/paper/figure10}
		\end{figure}
		\vspace*{-3mm}
		\begin{figure}[H]
			\centering
			\hspace*{-4mm}
			\includegraphics[width=0.9\textwidth]{res/paper/figure12}
		\end{figure}
	\end{minipage}
\end{frame}
