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Radiation Resistance Formula

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Radiation resistance is an effective resistance, due to the power carried away from the antenna as radio waves. Check FAQs
Rrad=Rt-Rohm
Rrad - Radiation Resistance?Rt - Total Antenna Resistance?Rohm - Ohmic Resistance?

Radiation Resistance Example

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With units
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Here is how the Radiation Resistance equation looks like with Values.

Here is how the Radiation Resistance equation looks like with Units.

Here is how the Radiation Resistance equation looks like.

2.25Edit=4.75Edit-2.5Edit
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HomeIcon Home » Category Engineering » Category Electronics » Category Antenna and Wave Propogation » fx Radiation Resistance

Radiation Resistance Solution

Follow our step by step solution on how to calculate Radiation Resistance?

FIRST Step Consider the formula
Rrad=Rt-Rohm
Next Step Substitute values of Variables
∴ Rrad=4.75Ω-2.5Ω
Next Step Prepare to Evaluate
∴ Rrad=4.75-2.5
LAST Step Evaluate
∴Rrad=2.25Ω

Radiation Resistance Formula Elements

Variables
Radiation Resistance
Radiation resistance is an effective resistance, due to the power carried away from the antenna as radio waves.
Symbol: Rrad
Measurement: Electric ResistanceUnit: Ω
Note: Value can be positive or negative.
Formulas to find Radiation ResistanceOpen Variable
Total Antenna Resistance
Total Antenna Resistance is defined as the electrical resistance of an antenna is composed of its ohmic resistance plus its radiation resistance.
Symbol: Rt
Measurement: Electric ResistanceUnit: Ω
Note: Value should be greater than 0.
Formulas to find Total Antenna ResistanceOpen Variable
Ohmic Resistance
Ohmic resistance is the material's opposition to the flow of electric current.
Symbol: Rohm
Measurement: Electric ResistanceUnit: Ω
Note: Value should be greater than 0.
Formulas to find Ohmic ResistanceOpen Variable

Other formulas in Antenna Theory Parameters category

​Go Radiation Intensity
U=Uo⋅Da
​Go Power Per Unit Bandwidth
Pu=k⋅TR
​Go Total Power of Antenna
Pa=k⋅Ta⋅Ba
​Go Effective Area of Antenna
Ae=k⋅ΔTS

How to Evaluate Radiation Resistance?

Radiation Resistance evaluator uses Radiation Resistance = Total Antenna Resistance-Ohmic Resistance to evaluate the Radiation Resistance, The Radiation Resistance formula is defined as that part of an antenna's feed point electrical resistance that is caused by the radiation of electromagnetic waves from the antenna. In radio transmission, a radio transmitter is connected to an antenna. Radiation Resistance is denoted by Rrad symbol.

How to evaluate Radiation Resistance using this online evaluator? To use this online evaluator for Radiation Resistance, enter Total Antenna Resistance (Rt) & Ohmic Resistance (Rohm) and hit the calculate button.

FAQs on Radiation Resistance

What is the formula to find Radiation Resistance?
The formula of Radiation Resistance is expressed as Radiation Resistance = Total Antenna Resistance-Ohmic Resistance. Here is an example- 2.25 = 4.75-2.5.
How to calculate Radiation Resistance?
With Total Antenna Resistance (Rt) & Ohmic Resistance (Rohm) we can find Radiation Resistance using the formula - Radiation Resistance = Total Antenna Resistance-Ohmic Resistance.
Can the Radiation Resistance be negative?
Yes, the Radiation Resistance, measured in Electric Resistance can be negative.
Which unit is used to measure Radiation Resistance?
Radiation Resistance is usually measured using the Ohm[Ω] for Electric Resistance. Megohm[Ω], Microhm[Ω], Volt per Ampere[Ω] are the few other units in which Radiation Resistance can be measured.
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