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Bridged-Tee Attenuator Calculator

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Bridged-Tee Attenuator Calculator | RF Passive Pad Designer
dB
Ω
Please enter valid calculation values.
RESULTS
Bridge Resistor (R1)
-
Shunt Resistor (R2)
-

Input Parameters Specification

Target Attenuation (dB) The desired logarithmic signal power level drop amplitude across the insertion network, measured in Decibels (dB).
System Impedance (Z0) The characteristic input and output port interface matching impedance value driven across the passive network, in Ohms (Ω).

Practical Operational Examples

Input Target Setup

Target Attenuation: 6.00 dB
System Impedance: 50.00 Ω

Calculated Component Values

• Bridge Resistor R1 = 49.7631 Ω
• Shunt Resistor R2 = 50.2382 Ω
• Circuit achieves uniform flat transmission loss response.

Bridged-Tee Attenuator Circuit Schematic

The topological layout details the passive high-frequency impedance matching attenuation loop mapping inputs over parallel series structures.

R1 Z0 R2 Z0

Diagrams & Theory

A Bridged-Tee attenuator uses a bridge resistor across the signal path and a shunt resistor from the center node to ground. The two Z0 arms represent the matched impedance path between input and output ports.

This network configuration profile is highly effective in RF signal attenuation because it handles broad power scaling attenuations linearly while maintaining stable, flat terminal return path input and output impedance match bounds perfectly.

Formulas & Mathematical Logic

K = 10^(Attenuation / 20) - 1
Bridge Resistor Value: R1 = Z0 × K
Shunt Resistor Value: R2 = Z0 × (1 / K)

The mathematical passive pad solver evaluates structural impedance properties linearly using standard decibel voltage division multipliers to solve matrix loop parameters securely.

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About this tool

Bridged-Tee Attenuator Calculator is a free online calculator tool. Use it to get instant, accurate results for your electronics calculations.