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UA91

Choke Ring Antenna

UA91 adopts high-gain broadband antenna to receive GNSS signals such as GPS, BDS, GLONASS, Galileo, QZSS and L-Band. The scheme of multi-stage 3D choke coils with completely symmetrical distribution is adopted to achieve higher phase center stability and excellent anti-multipath interference performance. It has excellent performance that the phase center coincides with the mechanical center.


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  1. Multi-constellation and Multi-frequency
  2. Superior Antenna Phase Center
  3. Excellent Polar Axis Ratio Performance
  4. Multipath Suppression

Antenna Performance

Frequency

GPS: L1/L2/L5

BDS: B1/B2/B3

GLONASS: G1/G2/G3

GALILEO: E1/E2/E5/E6C
QZSS: L1/L2/L5

SBAS
L-Band

Polarization

Right-handed circular

Axis ratio

2dB @Axial

Antenna Gain

5dBi @Axial

-3dBi @Elevation angle 20°

Out-of-roundness

1dB @ Elevation angle 20°

Front-to-back Ratio

30dB

Rolloff-factor

13dB

Phase Center Offset

± 1.5mm

 

Low Noise Amplifier Performance

Frequency Range

1525 ~ 1615 MHz

1182 ~ 1278 MHz

Characteristic Impedance

50 Ω

VSWR

1.3:1

Noise Figure

1.6dB Typically @25°

LNA Gain

40 ± 2dB

In-band Flatness

± 1.5dB

Out-of-band Suppression

L1 ± 200 MHz >40dBc

L2 ± 200 MHz >50dBc

Differential Transmission Delay

5ns (L1-L2)

Antenna Transmission Delay

15ns typically

Voltage

3.3 - 12 VDC

Current

35mA typical

 

 

Environmental performance

Operating Temperature

-55 ~ +85

Storage Temperature

-55 ~ +100

Humidity

Up to 100%

Water/Dust Proof

IP67

 

Physical

Dimension

Φ370 mm x H263 mm

Weight

7.7 Kg

Antenna Interface

TNC-F

Radome Material

FRP

Base Material

Aluminum-magnesium alloy

Mount

5/8-11UNC-2B

Datasheet

Download

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