NawfalMotii79
53 lines
2.0 KiB
Python
53 lines
2.0 KiB
Python
import matplotlib.pyplot as plt
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# Dimensions (all in mm)
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line_width = 0.204
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substrate_height = 0.102
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via_drill = 0.20
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via_pad_A = 0.20 # minimal pad case
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via_pad_B = 0.45 # robust pad case
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spacing_via_center_to_edge = 0.50
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# RF line and fence representation
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fig, ax = plt.subplots(figsize=(8, 4))
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# Draw RF line (centered at y=0)
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rf_line_y = 0
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ax.add_patch(plt.Rectangle((-5, rf_line_y - line_width/2), 10, line_width,
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facecolor="orange", edgecolor="black", label="RF Line"))
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# Draw ground plane edges (polygon edge at 0.30 mm from RF line edge)
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polygon_offset = 0.30
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polygon_y1 = rf_line_y + line_width/2 + polygon_offset
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polygon_y2 = rf_line_y - line_width/2 - polygon_offset
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ax.axhline(polygon_y1, color="blue", linestyle="--", label="Polygon edge")
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ax.axhline(polygon_y2, color="blue", linestyle="--")
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# Draw vias (case A and case B)
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via_positions = [2, 4, 6, 8] # x positions for visualization
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for x in via_positions:
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# Case A
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ax.add_patch(plt.Circle((x, polygon_y1), via_pad_A/2, facecolor="green", alpha=0.5, label="Via pad A" if x==2 else ""))
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ax.add_patch(plt.Circle((x, polygon_y2), via_pad_A/2, facecolor="green", alpha=0.5))
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# Case B
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ax.add_patch(plt.Circle((-x, polygon_y1), via_pad_B/2, facecolor="red", alpha=0.3, label="Via pad B" if x==2 else ""))
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ax.add_patch(plt.Circle((-x, polygon_y2), via_pad_B/2, facecolor="red", alpha=0.3))
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# Add dimensions text
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ax.text(0.5, rf_line_y + line_width/2 + 0.15, "0.30 mm", color="blue")
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ax.text(0.5, rf_line_y, "0.204 mm line", color="black")
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ax.text(2, polygon_y1 + 0.4, "Via A Ø0.20 mm pad", color="green")
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ax.text(-2, polygon_y1 + 0.5, "Via B Ø0.45 mm pad", color="red")
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# Formatting
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ax.set_xlim(-10, 10)
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ax.set_ylim(-2, 2)
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ax.set_aspect('equal', adjustable='box')
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ax.axis("off")
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ax.legend(loc="upper right")
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plt.title("Via Fence Setup for 10.5 GHz Microstrip Line")
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plt.savefig("/mnt/data/via_fence_setup.png", dpi=300, bbox_inches="tight")
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plt.close()
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