BT-104L5 GNSS Antenna Datasheet
Shenzhen Beitian Communication Co., Ltd. www.beitian.com
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BT-104L5
GNSS Helical Antenna
Datasheet
Revision: 6.13
Date:2025.4
BT-104L5 GNSS Antenna Datasheet
Shenzhen Beitian Communication Co., Ltd. www.beitian.com
2 / 4
PRODUCT DESCRIPTION
BT-104L5 GNSS antenna is an L1+L5 active spiral antenna, designed with multi-arm
spiral technology, which supports the L1 band satellite navigation signal reception of Beidou
II, GPS, GLONASS and GALILEO systems, meets the current needs of multi-system
compatibility and high-precision measurement, and can be widely used in high-precision
navigation and positioning occasions such as portable equipment, unmanned aerial vehicles,
navigation and scheduling. Accept user customization.
PRODUCT APPLICATION
It is suitable for the occasions that require volume and weight, such as UAV, micro RTK, Ami
handset/flat panel and other portable devices. Accept user customization.
TECHNICAL CHARACTERISTICS
Eight-arm coupled quadruple-fed zero phase center technology ensures right-handed
circular polarization and phase center stability.
The antenna unit has high passive gain and wide beam width to ensure the receiving
effect of low elevation signal.
Delicate low noise, high gain amplification and excellent out-of-band suppression;
Small size, light weight, easy to carry and install.
DIMENSION
Unit: mm
BT-104L5 GNSS Antenna Datasheet
Shenzhen Beitian Communication Co., Ltd. www.beitian.com
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MAIN PARAMETER
Item
Specifications
Bands
GPS: L1, L1C,L5C
BDS: B1I,B1C,B2a
Galileo: E1, E5a
QZSS: L5
IRNSS:S-L5
Polarization
RHCP
Axis Ratio of Antenna
3dB
Horizontal Coverage
360°
GAIN
3.5dBi
LNA GAIN
28±2dB
Noise Figure
≤2dB
Output VSWR
≤2.0:1
Band flatness
±2dB
Supply Voltage
3.3V
Supply Current
≤30mA
Operating Temperature
－40℃ -＋80℃
Storage Temperature
－45℃ -＋85℃
Humidity
95%
Dimensions
Ф18.5mm*50.0mm
Connector
SMA-J
Weight
≤11g
Waterproof grade
IP67
BT-104L5 GNSS Antenna Datasheet
Shenzhen Beitian Communication Co., Ltd. www.beitian.com
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FCC Warning Statement
This product has been tested and found to comply with the limits for a Class B digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This product generates uses and can
radiate radio frequency energy and, if not installed and used in accordance with the instructions,
may cause harmful interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this product does cause harmful
interference to radio or television reception, which can be determined by turning the equipment off
and on, the user is encouraged to try to correct the interference by one or more of the following
measures:
‐‐ Reorient or relocate the receiving antenna of the radio/TV.
‐‐ Increase the separation between the equipment and receiver(radio/TV).
‐‐ Connect the equipment into an outlet on a circuit different from that to which the
receiver(radio/TV) is connected.
‐‐ Consult the dealer or an experienced radio/TV technician for help.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions:
(1)This device may not cause harmful interference.
(2)This device must accept any interference received, including interference that may cause
undesired operation.
