Torpedo AQHA.11.A Active GNSS External Permanent Mount Antenna

Quad-Helix – Optimized Radiation Pattern
Wide Input Voltage Range
Dual-Stage LNA
IP67 Rated
92.5 D x 120mm H
RoHS Compliant

Application Note

SKU: AQHA.11.A.101111

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RTK GNSS L1 Antenna

The AQHA.11 is an RTK GNSS quadrifilar helix  L1 antenna for demanding GPS / GLONASS / BeiDou / Galileo applications. Its wide bandwidth allows maximum coverage of the main global satellite constellations. The wide axial ratio beamwidth of the quad-helix provides excellent reception and signal fidelity across the sky, reducing multipath effects, all while seeing more low elevation satellites compared to patch antenna designs. The AQHA.11 provides an excellent choice for high-stability single-band GNSS positioning and timing applications.

The position deviation data shown below shows a tight cluster of deviation points indicating a very high level of positioning accuracy. This circular pattern also depicts a highly stable and reliable fix. More information on this and a comparison summary between this and another GNSS positioning antenna can be seen in the application note.

Centimeter Level High Precision GNSS Antenna


With modern GNSS receivers, it is possible to create a decimeter or centimeter level positioning system.  A lightweight, compact antenna such as the FXP611 can be used and still benefit from RTK or DGPS techniques to provide decimeter-level positioning.

A high-performance antenna such as the AQHA.11, by contrast, can bring centimeter-level positioning and timing solutions to a whole new level for a wide variety of applications such as Autonomous Driving, Augmented Reality, Remote Monitoring, and Connected Health to name a few that will deploy centimeter-level accuracy.

Typical Applications include Timing, Precision Positioning, Telematics and Autonomous Routing. The AQHA.11 is provided with a dual-stage combined front-end, which provides high rejection, low noise figure, and excellent gain. The amplifiers accept a wide input voltage range of 2 to 24V and requires low current (10mA typical). The quad-helix AQHA.11 is ready for outdoor industrial and commercial usage with full -40 to +85°C temperature rating and IP67 ingress protection rating.

Cable and connector are customizable, contact your regional Taoglas office for support.

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