Trong bài này bạn sẽ học cách sử dụng ADS microstrip thành phần để mô phỏng một BandPass Filter sử dụng đường dây kết. Bạn sẽ làm một mô phỏng và mô phỏng một mạng lưới điện của đà bằng cách sử dụng bộ lọc. | ADS Tutorial 2 Bandpass Filter C. E. Saavedra In this tutorial you will learn how to use ADS microstrip components to simulate a bandpass filter using coupled lines. You will do a network simulation and an electromagnetic simulation of the filter using Momentum. 1. Start ADS 2. Open an existing project File- Open Project . or start a new project File- New Project- 3. Start new design File- New Design. Give the design an appropriate name like bandpass 4. Pull down the Component Palette List and go to TLines-Microstrip 5. Select MSUB and place it somewhere in the schematic window. Set the height of the substrate to H mm and the relative dielectric constant to Er . Leave the other parameters as they are for now. 6. To calculate the width of a microstrip line ADS has a special calculator that finds the linewidths for a particular impedance or vice versa. Go to Tools - LineCalc- Start Linecalc 7. The default component type is MLIN but you can also find coplanar waveguide CPW and other transmission lines. Stay with MLIN. In the Substrate Parameters box enter Er and H mm. Make sure you pick the right units in the drop-down box. In the Electrical box enter Zo 50Q. Leave E_Eff alone. 8. Click the Synthesize arrow. The calculator will show in the Physical box that the corresponding width is mm. In the Calculated Results box you will see K_eff . This is the effective dielectric constant. You can now close LineCalc File- Exit and click No in the dialog box. 9. In the Schematic window scroll down the components list on the left-hand side and pick MLIN. Place two of these parts in the window and set W mm and L 15 mm. 10. Next select Mcfil from the components list and connect three of these together. For the first and third coupled line sections set W mm S mm and L 11 mm. For the middle section set W mm S mm and L 11 mm. Connect the two input and output 50 W lines to the coupled line sections as shown in Figure 1. 11. Now .
