Difference between revisions of "Multiband-antenna-for-rtk"

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|-
|-
| Cable type
| Cable type
| Cable RG174
| RG174
|-
|-
| Dielectric antenna size
| Connector type
| Z50804040
|-
| Connector model
| SMA
| SMA
|-
|-
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| 1500mm(customizable)
| 1500mm(customizable)
|-
|-
| Fixed method
| Mount
| Magnet/Label
| Magnet
|-
| Shell color
| Black
|-
|-
| Salt spray test
| Salt spray test
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{| class="wikitable"
== Environment Feature ==
|-
! style="background-color:#9b9b9b;" | Items
! style="background-color:#9b9b9b;" | Specs
|-
| Frequency Range
|GPS L1/L2/L5
BDS B1/B2/B3
 
GLONASS G1/G2
 
GALILEO E1/E5a/E5b
 
|-
| Bandwidth
| ≥100MHz
|-
| Gain
| ≥4 dBic typ (@70*70 Ground)
|-
| S.W.R
| ≤2.0
|-
| Polarization
| Right-hand circular polarization(RHCP)
|-
| Axial ratio
| ≤3 dB
|}
 
== Environmental ==
{| class="wikitable"  
{| class="wikitable"  
|-
|-
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| ≥100MHz
| ≥100MHz
|-
|-
| Highest benefit
| Gain
| ≥4 dBic typ (@70*70 Ground)
| ≥4 dBic typ (@70*70 Ground)
|-
|-
| Standing wave ratio
| S.W.R
| ≤2.0
| ≤2.0
|-
|-
| Polarization mode
| Polarization
| Right-hand circular polarization(RHCP)
| Right-hand circular polarization(RHCP)
|-
|-
| Axle ratio
| Axial ratio
| ≤3 dB
| ≤3 dB
|}
|}

Revision as of 17:12, 6 May 2024

Multi-band antenna for RTK application

With the demands for high precision position, it increases the needs of received GNSS satellites’ number,making the trend of receiving multi-band GNSS system. Choosing a correct antenna is hugely important since antennas are the main interface between the GNSS space segment and the user, especially on multi-band system.

AGR6302G is designed for RTK applications, covering GPS, BDS, Galileo, GLONASS, IRNSS and QZSS system, details please refer to table 1. The antenna features stable signal quality and more angle receiver on the practical conditions. It employs the stack four feeds antenna architecture with hybrid to achieve the multi-band operation/ lower axial ratio/wider half power beam width and excellent right hand circular polarization.

With the newly architecture, the active part has two stages, one level filter and also one LNA for respective lower/higher band path. And then, the combiner of dual filter and the second level LNA output the RF gain to receiver. It provides excellent noise figure/ RF linear and LNA gain and out band rejection, resulting in good signal/noise ratio and anti-interference. It is housed in a compact, industrial-grade waterproof mount enclosure, the antenna can be installed almost anywhere allowing for greater flexibility. Using SMA connector fit together with GNSS module or receiver to show the dual band RTK performance.


Mechenical specs

Project name Index
Weight ≤200g
Dimensions 66.0*66.0*25.6
Cable type RG174
Connector type SMA
Cable length 1500mm(customizable)
Mount Magnet
Salt spray test 48H
Waterproof and dustproof IP65


Environment Feature

Item Specs
Temperature(Typical) -40℃~+70℃
Temperature(Max) -40℃~+85℃
Humidity 10 to 95% RH

Electrical performance

The electrical performance of the samples described in this document was measured under specific conditions:

  • temperature: 25±15℃
  • humidity: 65±20%RH
  • instrument power setting: 1uW
  • air pressure: (0.96±0.1) X 105 Pa

all experimental data were obtained by measuring with a block antenna connected to a grounding plate measuring 70*70mm, inside a microwave darkroom.

Antenna(Patch)Specs

Items Specs
Frequency Range GPS L1/L2/L5

BDS B1/B2/B3

GLONASS G1/G2

GALILEO E1/E5a/E5b

Bandwidth ≥100MHz
Gain ≥4 dBic typ (@70*70 Ground)
S.W.R ≤2.0
Polarization Right-hand circular polarization(RHCP)
Axial ratio ≤3 dB

LNA Performance

Items Specs
Gain GPS L1/L2/L5

BDS B1/B2/B3

GLONASS G1/G2

GALILEO E1/E5a/E5b

28.0±3dB
Noise Figure 2.0 dB typ
Input standing wave ≤2.0
Output standing wave ≤2.0
Voltage DC 3.0~5.0V
Current ≤60mA (@3.3V)
Impedance 50Ω