Novatel 531 - Manual (Page 2)

GPSAntenna Model 531 Rev 2
Technical Specifications
- ELECTRICAL -
3 dB pass band:
L1: 1575 ± 5 MHz
Out-of-band rejection: f
c
- 50 MHz: 18 dB f
c
+ 50 MHz: 56 dB
f
c
- 100 MHz: 36 dB f
c
+ 100 MHz: 44 dB
f
c
- 150 MHz: 45 dB f
c
+ 150 MHz: 44 dB
Antenna elev. pattern:
θ
= 90
°
: + 6.8 dBic (typical)
(90
°
= zenith) 20
° ≤ θ
< 90
°
: - 0.7 dBic to 6.8 dBic (typical)
5 ° ≤ θ < 20 ° : - 4.5 dBic to 1.0 dBic (typical)
0
° ≤ θ
< 5
°
: - 7.0 dBic to -2.0 dBic (typical)
θ
= 0
°
: - 7.0 dBic to -2.0 dBic (typical)
LNA gain: 26 ± 2 dB
Polarization: Right-hand circular
Noise figure: 2.2 dB
Axial ratio:
θ
= 90
°
: 2.0 dB max.
(90
°
= zenith) 30
° ≤ θ
< 90
°
: 5.0 dB max.
15
° ≤ θ
< 30
°
: 8.0 dB max.
5
° ≤ θ
< 15
°
: 11.0 dB max.
0
° ≤ θ
< 5
°
: 12.0 dB max.
Nominal impedance: 50
Ω
VSWR:
≤
2.0:1
Power requirements:
≤
25 mA @ + 4.25 to + 18.0 V DC
18 mA (typical) @ 5.0 V DC
Power handling:
≤
1 W
- MECHANICAL & ENVIRONMENTAL -
Finish: Weatherable
polymer
Weight: ≈ 375 g
Altitude:
≤
3 658 m (12,000')
Temperature: -40
°
C to +70
°
C
Mechanical Drawings
178
79
MAX
TNC FEMALE
CONNECTOR
GROUND PLANE
LEVEL
(BLUE LINE)
PHASE CENTRE
L1=51 MM
PHASE CENTRE
NAMEPLATE
AeroAntenna Technology Inc. Chatsworth, Ca. U.S.A
GPS ANTENNA P/N AT2775-19NK S/N
3
f
Top View
Side View
Bottom View
LOGO
(ALIGN TOWARDS NORTH)
5/8 - 11 UNC ADAPTOR
L1
Antenna
Phase
Centre
O ffset
51mm
Re v. N
PHASE CENTRE LABEL
(Illustration only, may change)
Note: All dimensions in millimetres except for thread size.