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TW3865天线GPSL1&2+GLONASS G1&2
2015-12-14 08:48  浏览:243
产品参数
  • 品牌名称:Tallysman
产品详情
 双馈双频GPS L1 & L2 + GLonASS G1 & G2内置天线,特别为双频精确定位打造,理想的单点精确定位(PPP)天线。
GPS L2 (1227.6MHz), GLonASS G2 (1248MHz 中心频率), GPS L1/WAAS/EGNOS/MSAS (1575.42MHz) and GLonASS G1 (1602MHz, 中心频率)。

The TW3865 features a precision tuned, circular dual feed, stacked patch elements. The signals from the two orthogonal feeds are combined in a hybrid combiner, amplified in a wide-band LNA, then band-split for narrow filtering in each band and further amplified prior to recombination at the output. This provides truly circular response over the entire bandwidth of the antenna.

The TW3865 offers excellent axial ratio and a tightly grouped phase center.
The OEM TW3865 is supplied with a standard 60mm diameter circular ground plane, with a coaxial cable terminated with a connector (right angle MCX is shown in the drawing). Mounting holes are provided for attachment to larger ground planes. Custom tuning and ground plane options may be available, depending on purchase level commitment.


 
Applications Features Benefits
  • Precision GPS Positioning
  • Dual Frequency RTK Receivers
  • Mission Critical GPS Timing
  • Military & Security
  • Fleet Management & Asset Tracking
  • Very low Noise Pream, <2dB.
  • Axial ratio: <1dB typ.
  • Tight Phase Center Variation
  • LNA Gain: 28 dB typ.
  • Low current: 25 mA typ.
  • Wide supply voltage: 2.5 to 16 VDC
  • Ideal for L1/L2 RTK surveying systems
  • Ideal for L1/L2 Precise Point Positioning (PPP) systems
  • Excellent multipath rejection
  • Increased system accuracy
  • Great signal to noise ratio
  • IP67 and RoHS compliant

Specifications

Vcc = 3V, over full bandwidth, T=25°C

Antenna  
Architecture Twin Dual, Quadrature Feeds
Bandwidth L1: 34 MHz, L2: 48MHz
Antenna Element Gain (100mm ground plane) L2: 3 dBic min. L1: 4.5 dBic min.
Axial Ratio (over full bandwidth) < 1 dB typ., 3 dB max . at Zenith
Electrical  
LNA Gain 28 dB typ, 26 dB min, each of L1 and L2 bands
LNA Noise Figure 2dB max at 25C
Out-of-Band Rejection
L1 L2
< 1500 MHz >50dB <1184MHz >50 dB
< 1550 MHz >36 dB <1200MHz >30 dB
> 1640MHz >60 dB > 1284MHz >32 dB
VSWR (at LNA output) <1.5:1
Supply Voltage Range (over coaxial cable) 2.5 to 16 VDC nominal (12VDC recommended maximum)
Supply Current 25 mA typ. 30mA max @75C
ESD Circuit Protection 15 KV air discharge
Mechanicals & Environmental  
Mechanical Size, Ground Plane 60 mm dia. x .75 mm thick, see drawing on Datasheet
Operating Temp. Range -40 to +85 °C
Weight 75 g
Attachment Method Through hole screws in ground plane
Environmental IP67 and RoHS compliant
Shock Vertical axis: 50 G, other axes: 30 G
Vibration 3 axis, sweep = 15 min, 10 to 200 Hz sweep: 3 G
Warranty One year, parts and labour
Ordering Information  
33-3865-xx-yyyy-zz Embedded GPS L1&L2 + GLonASS G1&G2 Antenna
wher xx = connector type, yyyy = cable length in mm, and zz=Assigned by Tallysman for custom tuning
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186 8204 2306
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