UA91 - Advanced Components - Beijing UniStrong Science and Technology Corporation Limited

Advanced Components

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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Powerful Satellite Tracking Capacity
Obtain all available and reliable data sources, with total channels and all signals (GPS, BDS, GLONASS, GALILEO, IRNSS, QZSS, and SBAS) of GNSS tracking.

Temperature Performance
The UA91 works in the range of temperatures from -55℃ to +85℃, and stores in -55℃ ~ +90℃.

High Phase Center Accuracy
Experience millimeter phase center accuracy with higher stability.

Rugged Design for Harsh Environments
Use it for many years with IP67 design, which is 95% protected against solid objects like dust and sand, and it has been tested to work for at least 30 minutes under 15 cm to 1 m of water.

Excellent Multipath Suppression Effect
Due to the unique 3D choke coil design and electrostatic protection against eight kv of air and four kv of static electricity, no longer a need to worry about interference by multipath.

High Gain
The UA91 uses a high-gain wide-band dual-band multimode GNSS measuring antenna to achieve coverage of the GNSS signal reception.

Antenna Performance		UA91
Satellites tracking	GPS	L1, L2, L5
	BDS	B1, B2, B3
	GLONASS	G1, G2, G3
	GALILEO	E1, E2, E5, E6C
	QZSS	L1, L2, L5
	IRNSS	L5
	SBAS	L1
	L-Band	L-Band
Polarization		Right-handed circular
Axis ratio		≤2dB @Axial ≤4dB @Elevation angle 20°
Antenna gain		≥5dBi @Axial ≤-3dBi @Elevation angle 20°
Out-of-roundness		≤1 dBi @Elevation angle 20°
Phase center offset		±1.5mm
Low Noise Amplifier Performance
Frequency range		1525 ~ 1615 MHz, 1165 ~ 1278 MHz
Characteristic impedance		50Ω
VSWR		≤1.3:1
Noise figure		1.6dB typically @ 25°
LNA gain		52 ± 2dB @ 25℃
In-band flatness		±1.5 dB
Out-of-band suppression		L1 ± 200 MHz >40 dBc L2 ± 200 MHz >50 dBc
Differential transmission delay		≤5ns (L1-L2)
Antenna transmission delay		15ns (Typically)
Voltage		3.3 ~ 12V dc
Current		≤45mA
Environmental Performance
Operating temperature		-55℃ ~ +85℃
Storage temperature		-55℃ ~ +90℃
Humidity		Up to 95%
Water/dust proof		IP67
Physical
Dimension		D370mm x H263mm
Weight		7700g
Antenna Interface		TNC-F
Radome material		FRP
Base material		Aluminum magnesium alloy
Mount		5/8-11 UNC-2B