Broadside Coupled Stripline Impedance Calculator

Broadside coupled striplines are a unique transmission line configuration where two conductors are placed directly above and below each other, separated by a dielectric layer.

This setup is commonly used in high-speed PCBs and RF designs, ensuring controlled impedance and low signal loss.

Calculating the impedance for such structures can be challenging, but the Free Online Broadside Coupled Stripline Impedance Calculator simplifies this task, providing quick and accurate results.

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Why Use This Calculator?

The Free Online Broadside Coupled Stripline Impedance Calculator is tailored for PCB designers and signal integrity engineers:

• Precise and Reliable Results: Eliminates the complexity of manual impedance calculations.
• User-Friendly Design: Simple input fields for quick parameter entry.
• Comprehensive Support: Accommodates various material properties and trace dimensions.
• Real-Time Feedback: Experiment with different parameters and instantly see the effects on impedance values.
• Completely Free and Online: Access it anywhere, anytime—no installations or subscriptions needed.

How to Use the Broadside Coupled Stripline Impedance Calculator

Using this calculator is straightforward and efficient:

1. Input Trace Width (W): Specify the width of the signal traces.
2. Enter Dielectric Height (H): Provide the thickness of the dielectric layer separating the two traces.
3. Input Dielectric Constant (εr): Enter the relative permittivity of the dielectric material.
4. Input Trace Spacing (S): If applicable, provide the horizontal spacing between the traces.
5. Specify Trace Thickness (T): Define the thickness of the signal traces.
6. Click Calculate: The calculator will provide differential impedance, odd-mode impedance, and even-mode impedance values instantly.

Formula

The impedance calculations for broadside coupled striplines rely on electromagnetic field theory and include the following parameters:

• Odd-Mode Impedance (Zₒodd): Impedance of one trace when signals are in opposite phases.
• Even-Mode Impedance (Zₒeven): Impedance when signals are in the same phase.
• Differential Impedance (Zₒdiff):
  Zₒdiff = 2 × Zₒodd

These values are influenced by:

• W: Trace width.
• H: Vertical separation between traces.
• $\epsilon r$: Dielectric constant.
• $T$: Trace thickness.
• $S$: Horizontal spacing (if any).

Applications of the Broadside Coupled Stripline Impedance Calculator

This tool is essential for various high-speed and RF applications, including:

• Differential Signal Design: Ensures precise impedance control for high-speed differential pairs.
• Signal Integrity Optimization: Reduces signal distortion and maintains quality in high-frequency circuits.
• Microwave and RF Applications: Ideal for designing transmission lines with minimal loss and controlled impedance.
• High-Speed Digital Interfaces: Supports interfaces like PCIe, HDMI, and USB that require strict impedance control.
• Advanced PCB Layouts: Helps in designing multi-layer PCBs with complex routing needs.

Streamline your PCB and RF design process with the Free Online Broadside Coupled Stripline Impedance Calculator, an indispensable tool for achieving precision and efficiency in your projects.