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Specification

Part No. : AQHA.50.A.301111

Product Name : Colosseum High Performance Multiband GNSS

Active Quad Helix Antenna

Features : Permanent Mount Robust Housing

GPS L1/L2/L5

GLONASS L1/L2/L3

Galileo E5A/E5B/E6

BeiDou B1/B1-2/B2/B3

High Gain (18dB~27dB)

IP67 Rated Waterproof ASA Enclosure

Cable: 3M RG-174

Connector: SMA(M)ST

Dimensions: Ø94 x 57mm

RoHS Compliant

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1. Introduction

The Taoglas Colosseum AQHA.50 multi-band GNSS active antenna has been carefully

designed to work well on multiple GPS, GLONASS, Galileo and BeiDou bands, leading to

higher location accuracy and stability of tracking in urban environments. The quad helix

antenna design has an even gain across the hemisphere giving almost perfect axial ratio

which makes it resilient to multipath rejection.

The Colosseums internal LNA provides excellent out of band rejection performance

providing excellent positioning stability and reliability of GNSS signals. The robust,

vandal resistant, permanent mount IP67 rated enclosure is just 57mm in height and

designed for ease of installation and can be mounted on any surface.

The AQHA.50 is the latest external addition to an ongoing product road map of high

precision antennas by Taoglas. Typical Applications Include:

• Autonomous Driving

• Precision Positioning for Robotics

• Precision Agriculture

• Inventory Management & Container tracking

• Telematics & Asset Tracking

• Timing Accuracy Synchronization

For RTK applications when used on the base and/or the rover, the AQHA.50 can achieve

genuine centimetre level accuracy.

Cable and connectors are customizable. Please contact your regional Taoglas office for

support.

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2. Electrical Specifications

Antenna Specification

Frequency 1176.45MHz

(L5)

1227.6MHz

(L2)

1575.42MHz

(L1)

Impedance 50Ω 50Ω 50Ω

Return Loss < -10 < -10 < -10

Axial ratio 1.2@ 0∘ 1.0 @ 210∘ 0.5 @ 210∘

Efficiency on

30cm*30cm Ground Plane 26.87% 30.72% 25.03%

Average Gain on

30cm*30cm Ground Plane -5.71dB -5.13dB -6.02dB

Peak Gain @ Zenith on

30cm*30cm Ground Plane 1.6dB 3.5dB 0.8dB

Polarization RHCP

LNA Specification *

Frequency 1176MHz 1227MHz 1575.42MHz

Impedance 50Ω

Return Loss < -10 -5 typ. < -10

Gain @3.0V 24dB typ. 18dB typ. 27dB typ.

DC Power Input 3.0V typ.

Noise Figure 2.4dB Typ. 2.1dB Typ. 1.8dB Typ.

Power Consumption 21mA Typ.

Operating Temp -30°C ~ +80°C

Storage Temp -30°C ~ +80°C

*Measurements do not include cable losses.

GNSS Systems Covered

GPS L1C/A

GLONASS L1OF

BeiDou B1I E6/B3 GLONASS

L2OF GPS L2C B2I/E5b

GPS L5 B2a/E5a

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Mechanical Specification

Dimensions Diameter: 94.3mm, Height: 57.4 mm

Casing ASA

Base and thread Zinc Alloy

Weight 395g

Ingress Protection Rating IP67

Maximum Assembly Torque 39.2 Nm

Regulatory Compliance CE, ROHS, Reach

Environmental Specification

Operation Temperature -40°C to 85°C

Storage Temperature -40°C to 85°C

Humidity Non-condensing 65°C 95% RH

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3. Antenna Characteristics

3.1 Block Diagram (Active antenna)

4. Antenna Characteristics

4.1 Testing setup

On 30x30cm ground plane

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4.2 Return Loss (Passive antenna)

4.3 Efficiency

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4.4 Average Gain

4.5 Peak Gain

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4.6 Axial ratio

(X-Z cut) @1176MHz

(X-Z cut) @1227MHz

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(X-Z cut) @1575.42MHz

4.7 Antenna Radiation Pattern Measurement

The antenna radiation patterns were measured in Anechoic Chamber. The measurement setup as below;

On 30x30cm ground plane

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4.8 Antenna 2D Radiation Patterns on 30x30cm ground plane

X-Y plane

X-Z plane

Y-Z plane

X

Z

Y

Z

X

Y

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5. LNA Gain and Noise Figure

@ DC 3.0V

0

5

10

15

20

25

30

1.15 1.2 1.25 1.3

LNA Noise & Gain@1176MHz/1227MHz

Noise Gain 1.176G 1.227G

0

5

10

15

20

25

30

35

1.535 1.555 1.575 1.595 1.615 1.635

LNA Noise & Gain@1575.42MHz

Noise Gain 1575.42

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6. Drawing

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7. Packaging

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Taoglas makes no warranties based on the accuracy or completeness of the contents of this document and

reserves the right to make changes to specifications and product descriptions at any time without notice. Taoglas reserves all rights to this document and the information contained herein. Reproduction, use or disclosure to third parties without express permission is strictly prohibited. Copyright © Taoglas Ltd.