overview of gps antennas - acad-antenna.co.il
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二二二二、、、、介质天线介质天线介质天线介质天线 Dielectric Antenna
中心频率Center Frequency 1575.42MHz±3 MHz
电压驻波比V.S.W.R 1.5:1
带宽Band Width ±5 MHz
阻抗Impendence 50 ohm
最高增益Peak Gain 3dBic Based on 7×7cm ground plane
增益范围Gain Coverage >-4dBic at –90°<0<+90°(over 75% Volume)
天线极化Polarization RHCP
一产品型号产品型号产品型号产品型号Product Model BBTGPS-B2
Large Patch
BOBOTO
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Variation of Axial Ratio with Cross Polar signal level
0
1
2
3
4
5
6
7
8
9
10
11
12
5 10 15 20 25 30 35 40
Cross Polar Signal Level/dB
Axial Ratio/dB
Axial Ratio/dB
(Axial Ratio/dB) .פולי
Axial Ratio and Cross Pol
Cross Pol = (√√√√AR–1)²/ (√√√√AR+1)²
23
-40
-35
-30
-25
-20
-15
-10
-5
0
5
10
-180 -150 -120 -90 -60 -30 0 30 60 90 120 150 180
Angle (degrees)
Absolute G
ain ( dBiC
)
Co-Polar
X-Polar
Model HOA3-159L-ACT/1409
Meas Plane Elevation
Peak Gain 2.2 dBiC
Frequency 1.6605 GHz
Axial Ratio and Cross Pol
European Antennas