229-A1.2

Activity: Passive Matching Networks
Instructions: Each activity is structured as a tutorial, and you are expected to download the netlists, run the simulation, and make sure you understand the concepts and ideas presented. Should you have any questions, clarifications, or issues, please contact your instructor as soon as possible.
- If you are new to ngspice, please visit the ngspice Tutorial page.
At the end of this activity, the student should be able to:

Design and verify the performance of passive impedance matching circuits using ngspice.

Case 1: $R_{S}>R_{L}$

Let's design a matching circuit between a voltage source with output resistance, $R_{S}=50\mathrm {\Omega }$ and an amplifier with input resistance, $R_{L}=25\mathrm {\Omega }$ .

229-A1.2

Contents

Case 1: $R_{S}>R_{L}$

Case 2: $R_{S}<R_{L}$

Case 3: $R_{S}>R_{L}$ with High-Q

Case 4: $R_{S}<R_{L}$ with High-Q

Case 5: $R_{S}<R_{L}$ with Optimally Low-Q

End of Activity

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229-A1.2

Contents

Case 1: R S > R L {\displaystyle R_{S}>R_{L}}

Case 2: R S < R L {\displaystyle R_{S}<R_{L}}

Case 3: R S > R L {\displaystyle R_{S}>R_{L}} with High-Q

Case 4: R S < R L {\displaystyle R_{S}<R_{L}} with High-Q

Case 5: R S < R L {\displaystyle R_{S}<R_{L}} with Optimally Low-Q

End of Activity

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Case 1: $R_{S}>R_{L}$

Case 2: $R_{S}<R_{L}$

Case 3: $R_{S}>R_{L}$ with High-Q

Case 4: $R_{S}<R_{L}$ with High-Q

Case 5: $R_{S}<R_{L}$ with Optimally Low-Q