RF 計算機

Calculator Menu

& 単位互換

Conversion Calculators

RF Product Calculators

General RF Calculators

2017年12月1日より価格改定しました。詳細はこちらをご参照下さい。
  • フリーダイヤル (0120) 217-339
ホーム - RF/Microwave Calculators & Conversions - Free Space Path Loss Calculator

Free Space Path Loss Calculator

Pasternack's Free Space Path Loss Calculator calculates the loss (in dB) between two antennas where the gain, distance and frequency are known.

Bookmark or "Favorite" this page by pressing CTRL + D.

Distance:
Frequency:
Transmitter Gain (dB):
Reciever Gain (dB):

Result:
Free Space Path Loss:

Free Space Path Loss (FSPL) calculations are often used to help predict RF signal strength in an antenna system. Loss increases with distance, so understanding the FSPL is an essential parameter for engineers dealing with RF communications systems.

**Note: All of our calculators allow SI prefix input. For example, if you wish to input "25000000", just type "25M" instead. See the quick-reference table below for all compatible SI prefixes.
Prefix Symbol Value
Tera 'T' 1012
Giga 'G' 109
Mega 'M' 106
kilo 'k' 103
Prefix Symbol Value
pico 'p' 10-12
nano 'n' 10-9
micro 'u' 10-6
milli 'm' 10-3