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

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


===陶瓷片(Patch)性能指标===
=== Antenna(Patch)Specs ===
{| class="wikitable"  
{| class="wikitable"  
|-
|-
! style="background-color:#9b9b9b;" | 参数
! style="background-color:#9b9b9b;" | Items
! style="background-color:#9b9b9b;" | 规格
! style="background-color:#9b9b9b;" | Specs
|-
|-
| 频率范围
| Bands
| BDS B1
| BDS B1
GPS L1/L2/L5  
GPS L1/L2/L5  
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GLONASS G1
GLONASS G1
|-
|-
| 带宽
| Bandwidth
| ≥100MHz
| ≥100MHz
|-
|-

Revision as of 16:56, 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

Items Specs
Weight ≤200g
Dimensions 66.0*66.0*26.2
Cable Type RG174
Antenna size Z50804040
Connector SMA
Cable Length 1500mm(Customized)
Mount
Color Bloack
Salt Spray Test 48H(neutral)
Waterproof/Dustproof IP66

Environmental

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
Bands BDS B1

GPS L1/L2/L5

GLONASS G1

Bandwidth ≥100MHz
最高效益 ≥4 dBic typ (@70*70 Ground)
驻波比 ≤2.0
极化方式 右旋圆极化(RHCP)
顶点轴比 ≤3 dB

低噪放(LNA)性能指标

参数 规格
增益 BDS B1

GPS L1

GLONASS G1

GALILEO E1

27.0±3dB
BDS B2/B3

GPS L2/L5

GLONASS G2

GALILEO E5a/E5b

29.0±3dB
噪声系数 2.0 dB typ
输入驻波 ≤2.0
输出驻波 ≤2.0
电压 DC 3.0~5.0V
电流 ≤60mA (@3.3V)
阻抗 50Ω