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Doppler Frequency
Propagation Loss
Radar Range
Power Density and Field Strength
Transmit Frequency
Hz
KHz
MHz
GHz
Angle
Velocity to Doppler Frequency
Velocity
m/s
cm/s
inch/s
km/hr
miles/hr
Doppler Frequency (Hz)
Calculate
Clear
Doppler Frequency to Velocity
Doppler Frequency (Hz)
Velocity
m/s
cm/s
inch/s
km/hr
miles/hr
Calculate
Clear
Transmit Frequency
Hz
KHz
MHz
GHz
Distance
m
cm
mm
km
inches
miles
One way propagation loss
dB
Calculate
Clear
Transmit Frequency
Hz
KHz
MHz
GHz
Transmit power
mW
uW
W
dBm
dBW
Transmit antenna gain
dB
Radar cross section, σ
m²
dBsm
Receive antenna gain
dB
Minimum detectable signal
mW
nW
uW
W
dBm
dBW
Maximum radar range
m
m
cm
km
miles
Calculate
Clear
Radar Cross Section Reference Table
Target
σ (m
2
)
Bird
0.01
Missile
0.5
Person
1
Small Plane
1-2
Bicycle
2
Small Boat
2
Fighter Plane
3-8
Bomber
30-40
Large Airliner
100
Truck
200
Reference from Pozar, David M. Microwave Engineering. Hoboken, NJ: J. Wiley, 2005. Print
EIRP to Power density, Electric Field Strength and Magnetic Field Strength
Distance between transmitter and human target
cm
m
mm
km
inches
miles
EIRP
mW
W
KW
uW
nW
dBm
dBW
Duty cycle
magnitude
Power density over distance
mW/cm²
W/cm²
μW/cm²
nW/cm²
mW/m²
W/m²
μW/m²
nW/m²
Electric field strength
V/m
mV/m
uV/m
dBV/m
dBmV/m
dBuV/m
Magnetic field strength
A/m
mA/m
uA/m
dBA/m
dBmA/m
dBuA/m
Calculate
Clear
Electric Field Strength to EIRP
Distance between transmitter and human target
cm
mm
m
km
inches
miles
Duty cycle
magnitude
Electric field strength over distance
V/m
mV/m
uV/m
dBV/m
dBmV/m
dBuV/m
EIRP
mW
W
KW
uW
nW
dBm
dBW
Calculate
Clear
Magnetic Field Strength to EIRP
Distance between transmitter and human target
cm
mm
m
km
inches
miles
Duty cycle
magnitude
Magnetic field strength
A/m
mA/m
uA/m
dBA/m
dBmA/m
dBuA/m
EIRP
mW
W
KW
uW
nW
dBm
dBW
Calculate
Clear
Power density to EIRP
Distance between transmitter and human target
cm
m
mm
km
inches
miles
Duty cycle
magnitude
Power density over distance
mW/cm²
W/cm²
μW/cm²
nW/cm²
mW/m²
W/m²
μW/m²
nW/m²
EIRP
mW
W
KW
uW
nW
dBm
dBW
Calculate
Clear
Power Density of
Agil
Sense
Modules at 1m
Model
Power Density (μW/cm
2
)
HB100
0.795774715
HB1 Series
0.158780929
HB7 Series
0.795774715
HB9 Series
0.502099627
DF100
0.795774715
DF103
1.998895367
DF300
2.516460876
DF600
0.795774715
DF800
2.516460876
FCC safety limits < 5mW/cm
2
Copyright © %s ST Engineering
Tools
Doppler Frequency
Transmit Frequency
Hz
KHz
MHz
GHz
Angle
Velocity to Doppler Frequency
Velocity
m/s
cm/s
inch/s
km/hr
miles/hr
Doppler Frequency (Hz)
Calculate
Clear
Doppler Frequency to Velocity
Doppler Frequency (Hz)
Velocity
m/s
cm/s
inch/s
km/hr
miles/hr
Calculate
Clear
Propagation Loss
Transmit Frequency
Hz
KHz
MHz
GHz
Distance
m
cm
mm
km
inches
miles
One way propagation loss
dB
Calculate
Clear
Radar Range
Transmit Frequency
Hz
KHz
MHz
GHz
Transmit power
mW
uW
W
dBm
dBW
Transmit antenna gain
dB
Radar cross section, σ
m²
dBsm
Receive antenna gain
dB
Minimum detectable signal
mW
nW
uW
W
dBm
dBW
Maximum radar range
m
cm
km
miles
Calculate
Clear
Radar Cross Section Reference Table
Target
σ (m
2
)
Bird
0.01
Missile
0.5
Person
1
Small Plane
1-2
Bicycle
2
Small Boat
2
Fighter Plane
3-8
Bomber
30-40
Large Airliner
100
Truck
200
Reference from Pozar, David M. Microwave Engineering. Hoboken, NJ: J. Wiley, 2005. Print
Power Density and Field Strength
Distance between transmitter and human target
cm
m
mm
km
inches
miles
EIRP
mW
W
KW
uW
nW
dBm
dBW
Duty cycle
magnitude
Power density over distance
mW/cm²
W/cm²
μW/cm²
nW/cm²
mW/m²
W/m²
μW/m²
nW/m²
Electric field strength
V/m
mV/m
uV/m
dBV/m
dBmV/m
dBuV/m
Magnetic field strength
A/m
mA/m
uA/m
dBA/m
dBmA/m
dBuA/m
Calculate
Clear
Electric Field Strength to EIRP
Distance between transmitter and human target
cm
mm
m
km
inches
miles
Duty cycle
magnitude
Electric field strength over distance
V/m
mV/m
uV/m
dBV/m
dBmV/m
dBuV/m
EIRP
mW
W
KW
uW
nW
dBm
dBW
Calculate
Clear
Magnetic Field Strength to EIRP
Distance between transmitter and human target
cm
mm
m
km
inches
miles
Duty cycle
magnitude
Magnetic field strength
A/m
mA/m
uA/m
dBA/m
dBmA/m
dBuA/m
EIRP
mW
W
KW
uW
nW
dBm
dBW
Calculate
Clear
Power density to EIRP
Distance between transmitter and human target
cm
m
mm
km
inches
miles
Duty cycle
magnitude
Power density over distance
mW/cm²
W/cm²
μW/cm²
nW/cm²
mW/m²
W/m²
μW/m²
nW/m²
EIRP
mW
W
KW
uW
nW
dBm
dBW
Calculate
Clear
Power Density of
Agil
Sense
Modules at 1m
Model
Power Density (μW/cm
2
)
HB100
0.795774715
HB1 Series
0.158780929
HB7 Series
0.795774715
HB9 Series
0.502099627
DF100
0.795774715
DF103
1.998895367
DF300
2.516460876
DF600
0.795774715
DF800
2.516460876
FCC safety limits < 5mW/cm
2
