other equivalent mount. Attach coaxial cable from the antenna connector to the antenna
port on your receiver.
Caution: Over tightening the metal adaptor into the plastic baseplate will damage
the baseplate.
The maximum directivity at 90
°
elevation angle (antenna boresight) is typically 8
Decibels (dBi). This is on average 5 dB more than a typical patch antenna. In addition
the pattern roll-off from boresight to antenna horizon (0
°
elevation angle) is in the order
of 15 dB. This roll-off compares well to a patch antenna roll-off mounted on a large
choke ring ground plane. This antenna has a major advantage above the choke ring
ground plane antenna – it is lighter by several pounds and much smaller.
The phase center in the x and y-axis is located in the center of the antenna due to its
inherent symmetry and co-centric type design.
– ELECTRICAL TECHNICAL SPECIFICATIONS –
3 dB pass band:
L1:
1575
±
8 MHz
Out-of-band rejection:
f
c
± 30 MHz:
15 (typical)
f
c
± 50 MHz:
30 (typical)
f
c
± 100 MHz:
50 (typical)
Antenna elev. pattern:
θ
= 90
°
:
7.5 dBic (min.)
(90
°
= zenith)
20
°
≤ θ
< 90
°
:
-1.5 dBic (min.)
5
°
≤ θ
< 20
°
:
-5.5 dBic (min.)
0
°
≤ θ
< 5
°
:
-7.0 dBic (min.)
LNA gain:
26
±
3 dB
Polarization:
Right-hand
circular
Noise figure:
≤
2.5 dB (typical)
Axial ratio:
0
°
≤
θ ≤
90
°
:
5 dB max.
(90
°
= zenith)
Nominal impedance:
50
Ω
VSWR:
≤ 2.0:1
Power requirements:
≤
28 mA @ +4 to +18 VDC,
25
mA (typical) @ 5 VDC
Power handling:
≤ 0.125
W (typical)
– MECHANICAL & ENVIRONMENTAL SPECIFICATIONS –
Finish:
Weatherable polymer
Weight:
≈
730 g (25.75 oz)
Altitude:
3000 m (9842.5
ft
)
Temperature: -55
°
C to +85
°
C (-67
°
F to +185
°
F)
– MECHANICAL DRAWINGS –
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