User's Manual

1010
IMPORTANTSYSTEM HARDWARE OVERVIEW
RADAR CHARACTERISTICS
The radar has been designed to have a specific set of functional characteristics which make it suitable for speed
measurements for enforcement applications.
Radar Antenna
The antenna design is a planar patch array with the following performance;
Operating Frequency Band and Power
ThetransmitterisaPhaseLockedLoop(PLL)controlledMMICbasedoscillator.Thedesigncondencemeans
that the nominal centre frequency of the transmission shall remain within a 10MHz window for the required
7 years for a radar functioning normally.
The change in frequency with temperature is measured to be ≤ ±1.21MHz over the operating temperature
range-20ºCto+60ºC.
The radar frequency and power is as follows;
Parameter Specified Notes
Horizontal Beam-width 4.5˚ -3dB(HPBW)
Vertical Beam-width 15˚ -3dB(HPBW)
Side-lobe Suppression >15dB
E-Field Horizontal Plane Polarised
Parameter Specified Notes
Operating Frequency Band 24.075 – 24.125 GHz
FrequencyModulation(FM) 9.4MHz
Power <100mW eirp
Field Strength Typically 450mV/m At 3m
ITU Code 9M4FXN