RF bench planner
See every level before you connect the bench.
Build a source-to-instrument path, check gain and loss at every node, and catch overload or compression before hardware is connected.
| Stage | Type | Gain / loss | Input | Output | Max input | Output P1dB | Status | Actions |
|---|
Absolute RF levels
Power, voltage, and level conversion.
Convert one physical quantity across common RF power and voltage units using an explicit reference impedance.
- dBm
- —
- dBW
- —
- Watts
- —
- mW
- —
- µW
- —
- Vrms
- —
- Vpeak
- —
- Vpp
- —
- dBµV
- —
Bias and sensing networks
Voltage divider under real load.
Solve for voltage or resistance, then check how the connected load changes output voltage, current, and resistor dissipation.
- Vin
- —
- Vout
- —
- R1
- —
- R2
- —
- Effective lower R
- —
- Source current
- —
- Load current
- —
- Unloaded Rout
- —
- R1 power
- —
- R2 power
- —
Mismatch check
VSWR, return loss, and reflected power.
Enter the reflection quantity you know. The related mismatch quantities update from the same reflection coefficient.
- VSWR
- —
- |Γ|
- —
- Return loss
- —
- Reflected power
- —
- Mismatch loss
- —
- Delivered power
- —
Frequency to distance
Wavelength and electrical length.
Calculate free-space and guided wavelength, common fractions, propagation delay, and phase for a physical line length.
- Free-space λ
- —
- Guided λ
- —
- Guided λ (imperial)
- —
- 3λ / 4
- —
- 5λ / 8
- —
- λ / 2
- —
- λ / 4
- —
- λ / 8
- —
- Delay per metre
- —
- Length delay
- —
- Electrical phase
- —
Complex conversion
S11 and complex impedance.
Move between R + jX and S11 magnitude/phase against a defined reference impedance.
- Impedance
- —
- Γ real
- —
- Γ imaginary
- —
- |Γ|
- —
- S11 magnitude
- —
- S11 phase
- —
- VSWR
- —
Resistive pad design
Attenuator design and reverse check.
Design T, Pi, or bridged-T pads for the required loss, or enter resistor values to recover actual attenuation, match, and power stress.
Ideal values appear after design.
- R1
- —
- R2
- —
- R3
- —
- R4 bridge
- —
- Achieved attenuation
- —
- Input impedance
- —
- Output impedance
- —
- Input VSWR
- —
- Output VSWR
- —
- Load power
- —
Official external calculator
JLCPCB controlled-impedance calculator.
Use JLCPCB's mature board stack-up calculator inside this workspace. Results, stack-ups, and production rules are provided by JLCPCB.
If the embedded tool is blank or too narrow on mobile, use Open at JLCPCB.