- Convert from dBμV
- Convert from dBmV
- Convert from dBV
- Convert from dBμA
- Convert from dBmA
- Convert from dBA
- Convert from dBpW
- Convert from dBm
- Convert from dBW
- Convert from μV
- Convert from mV
- Convert from V
- Convert from μA
- Convert from mA
- Convert from A
- Convert from pW
- Convert from mW
- Convert from W
- Convert from rms, avg, peak
- Antenna Equations
- Antenna Field/Power
- Convert E/H Field Strengths
- TEM/GTEM Field/Power
- Convert from in,ft,mm,cm,m
- Covert from Hz,kHz,MHz,GHz
Convert between Antenna Factor and Gain in dBi
Antenna Factor
Frequency
dBm-1 for
MHz
GaindBi
=\( 20\cdot
Log(MHz)-AF-29.79 \)
GaindBi
Frequency
dB for
MHz
AF
=\( 20\cdot
Log(MHz)-Gain_{dBi}-29.79 \)
Far-Field Distance
Dipole, Log-Periodic ,or Yagi Antennas
MHz
Distancemeters
=\(
300/(MHz*2*pi) \)
Horn Antennas
MHz
Dmeters
λ
=\( 300/MHz
\)
Distancemeters
=\(
2*{D}^{2}/λ \)
Find Spot Size
Test Distance
3dB Beam Width
m for °Deg
Spotmeters
=\( 2\cdot
Distance_{meters}tan[\frac{Angle_{3dB}}{2}]
\)
Find Test distance
Spot Size
3dB Beam Width
m for
°Deg
Distancemeters
=\(
\frac{Spot_{meters}}{2\cdot
tan[\frac{Angle_{3dB}}{2}]} \)
Find 3dB Beam Width
Spot Size
Distance
m for
m
°Deg
= \( 2\cdot
tan^{-1}[\frac{Spot_{meters}}{2\cdot
Distance}] \)
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