Specification
Part No.
Product Name
:
:
A.90.A.101111
Bolt
–
High Gain Low Profile
GNSS L1 GPS/GLONASS Permanent
Mount Antenna with High Out of Band Rejection
Features
:
30dB GPS Gain, 25dB GLONASS Gain
Rejection:
>80dB@850/900MHz,
>65dB@1800/1900MHz
Lightning Induced Surge Protection
IEC 61000-4-5 (Class 4) 4kV
Wide band input voltage
Permanent (Screw) Mount
Low Profile,
Vandal Resistant
Design
IP67 Rated, UV Resistant Enclosure
Cable: 1M RG174
Connector: SMA (M) ST
Dimensions: Diameter: 94.3mm, Height: 25.4mm
RoHS Compliant
SPE-18-8-037/A/EH
Page 1 of 14
1. Introduction
The Bolt, A.90 is a high gain GNSS L1 (GPS/GLONASS) antenna that features very high out of
band rejection and can handle large bursts of power from nearby transmitters. These
characteristics make the A.90 ideal for applications where the antenna will be placed near high-
power transmitters, such as cellular base stations or radar systems.
The A.90 utilizes a very high efficiency (>78%) patch antenna that has been tuned for best
possible performance within the enclosure to maximize signal quality. A ceramic dielectric filter is
placed between the antenna and the LNAs to absorb large out-of-band bursts of power from nearby
transmitters while minimizing in-band insertion loss. The internal LNAs have very low noise figure
to maintain excellent signal quality throughout the entire signal chain. The signal chain also
features carefully selected and placed SAW filters that collectively allow for very sharp signal
attenuation outside of the intended frequency bands without negatively impacting in-band signal
quality.
The A.90 features excellent rejection across all non-GNSS frequencies to prevent overdriving or
damaging your GPS receiver. At the 850/900MHz cellular bands, for example, the A.90 exhibits
greater than 80dB of rejection. At the 1800/1900MHz cellular bands, it exhibits >65dB, making it
best in class when out of band interference is a concern. Even with this excellent out of band
attenuation, the A.90 maintains a low noise figure of 3.7dB and high gain of >25dB, making it an
ideal solution for applications with longer cable runs where high cable loss is a concern. The A.90
also features protection against lightning induced surges that are common in tower equipment,
according to IEC 61000-4-5 (Class 4) 4kV.
Cable lengths and connector types are customizable. Contact your regional Taoglas sales office for
support.
SPE-18-8-037/A/EH
Page 2 of 14
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