M8HCT-A-SMA

**DATASHEET** 

MAX[TENA] WIRELESS INNOVATIONS COMPANY 

## M8HCT-A-SMA 

**FEATURING PROPRIETARY HELICORE™ TECHNOLOGY** 

The M8HCT-A-SMA is the world’s most advanced patented GNSS antenna. Designed for high precision & autonomous multi-frequency applications. The rugged active quadrifilar helix antenna is manufactured using automotive grade electronics for GIS, RTK and other GNSS applications. The revolutionary design offers concurrent reception on L1: GPS, GLONASS, Galileo, Beidou L2: GPS L2C, Galileo E5B, GLONASS L30C and L5: the most advanced GNSS signal yet. 

## M8HCT-A-SMA 

L1: GPS, GLONASS, GALILEO, BEIDOU L2: GPS L2C, GALILEO E5B, GLONASS L3OC L5: GPS Part #: 100-00124-01 **Description** The M8HCT-A-SMA is an active multi-frequency, high-accuracy, GNSS antenna for the L1/L2/L5 GPS, Galileo, Beidou and GLONASS bands. The antenna is designed for applications requiring greater accuracy than L1-only antennas can provide. The antenna is built on proprietary Maxtena Helicore® technology providing exceptional pattern control, polarization purity and high-efficiency in a compact form factor. It features an integrated SMA connector and rugged IP67 automotive grade components. The M8HCT-A-SMA is ideal for applications requiring minimal integration effort or for retrofitting existing products. The antenna is equipped with an O-ring. **Passive Antenna Performance** Parameter Specification an Frequency 1192-1231 MHz (L2, B2, 1559-1606 MHz (L1, E1, 1164-1189 MHz (L5) G2, G3, E5B) B1, B1-2, G1) Peak Efficiency 46% 49% 40% Polarization RHCP RHCP RHCP Realized Gain 1.1 dB 0.5 dB 0.5 dB Axial Ratio Max 1.2 dB at the Zenith Max 0.9 dB at the Zenith 1.1 dB at the Zenith VSWR Max 2:1 Max 2:1 Max 1:1 Beamwidth 135˚ 125˚ 112˚ ~~=~~ 4 g **Phase Center Variation** Antenna images not to scale Maximum Phase Center Variation (mm) **Features** In azimuth plane Max 10 mm • Quadrifilar helix antenna As low as 40 degree elevation Max 10 mm • Concurrent GNSS reception on L1: GPS, Between samples Max 5 mm GLONASS, Galileo, Beidou L2: GPS L2C, Over frequency band Max 10 mm Galileo E5B, GLONASS L3OC and L5: GPS • Rugged IP67 rating with SMA mount **RF Specifications** • Small form factor • Ground plane independent Parameter Specification • GIS, RTK and other high accuracy GNSS Conducted Gain 30 dB ±3 dB ~~—~~ applications Noise Figure 1.5 dB typical, 2 dB max • Low power consumption Voltage 3.0 to 5.0 V • Low phase center variation over azimuth and Current 25 mA max elevation and among different samples Out of Band Rejection 40 dBc • Ultra-lightweight Group Delay Variation Less than 5ns over GNSS bands • Automotive grade electronics EMI Immunity Out of Band 30 V/m ~~=——~~ ESD Circuit Protection 15 kv human body model air discharge 

- Low phase center variation over azimuth and elevation and among different samples 

WIRELESS INNOVATIONS COMPANY 

Maxtena Inc. 7361 Calhoun Place, Suite 102 Rockville, MD 20855 1-877-629-8362 info@maxtena.com 

**www.maxtena.com** 

## **L2 band radiation patterns** 

## **Maxtena’s M8HCT-A-SMA has unique features that make it the best option for high-accuracy GNSS applications.** 

1. Low axial ratio not only at the zenith, but also in other elevation angles ensures multipath error is mitigated. 

2. Full hemispherical coverage is achieved by an exceptionally large 3 dB beamwidth, ensuring full view of sky and satellites in lower elevation angles. 

3. Highly symmetric radiation pattern guarantees there will be no direction of weak reception or blind spots. 

**RHCP Realized Gain [dBic] - Elevation Cuts** 

**RHCP Realized Gain [dBic] - Azimuth Cuts** 

A 135 degree beamwidth ensures excellent hemispherical coverage. 

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Symmetric coverage even in low elevation enhances accuracy.<br>**----- End of picture text -----**<br>


**Axial Ratio [dB] - Zenith** 

**Axial Ratio [dB] - Azimuth Cuts** 

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Maxtena Inc. 7361 Calhoun Place, Suite 102 Rockville, MD 20855 1-877-629-8362 info@maxtena.com **www.maxtena.com** 

## **L1 band radiation patterns** 

Maxtena’s M8HCT-A-SMA uses patented Helicore technology which results in minimal dependence on frequency and features a wide beamwidth, low axial ratio and radiation pattern symmetry across all desired frequencies in L1, L2 and L5 bands. 

## **RHCP Realized Gain [dBic] - Elevation Cuts** 

**RHCP Realized Gain [dBic] - Azimuth Cuts** 

A 125 degree beamwidth ensures excellent hemispherical coverage. 

Symmetric coverage even in low elevation enhances accuracy. 

## **Axial Ratio [dB] - Zenith** 

**Axial Ratio [dB] - Azimuth Cuts** 

Maxtena Inc. 

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7361 Calhoun Place, Suite 102 Rockville, MD 20855 1-877-629-8362 info@maxtena.com **www.maxtena.com** 

## **L5 band radiation patterns** 

Maxtena’s M8HCT-A-SMA uses patented Helicore technology which results in minimal dependence on frequency and features a wide beamwidth, low axial ratio and radiation pattern symmetry across all desired frequencies in L1, L2 and L5 bands. 

**RHCP Realized Gain [dBic] - Elevation Cuts** 

**RHCP Realized Gain [dBic] - Azimuth Cuts** 

A 125 degree beamwidth ensures excellent hemispherical coverage. 

Symmetric coverage even in low elevation enhances accuracy. 

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Axial Ratio [dB] - Zenith<br>**----- End of picture text -----**<br>


**Axial Ratio [dB] - Azimuth Cuts** 

Maxtena Inc. 

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7361 Calhoun Place, Suite 102 Rockville, MD 20855 1-877-629-8362 info@maxtena.com **www.maxtena.com** 

## **Phase Center Variation** 

Maxtena’s M8HCT-A-SMA has minimal phase center variation over azimuth and elevation in L1, L2 and L5 bands. 

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Phase Center Variation vs. Elevation in L2 band.<br>**----- End of picture text -----**<br>


Phase Center Variation vs. Azimuth at Theta=30˚ in L2 band. 

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Phase Center Variation vs. Elevation in L1 band.<br>**----- End of picture text -----**<br>


Phase Center Variation vs. Azimuth at Theta=30˚ in L1 band. 

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Maxtena Inc. 7361 Calhoun Place, Suite 102 Rockville, MD 20855 1-877-629-8362 info@maxtena.com **www.maxtena.com** 

## **Phase Center Variation** 

Maxtena’s M8HCT-A-SMA has minimal phase center variation over azimuth and elevation in L1, L2 and L5 bands. 

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Phase Center Variation vs. Elevation in L5 band.<br>**----- End of picture text -----**<br>


Phase Center Variation vs. Azimuth at Theta=30˚ in L5 band. 

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Maxtena Inc. 7361 Calhoun Place, Suite 102 Rockville, MD 20855 1-877-629-8362 info@maxtena.com **www.maxtena.com** 

## **Excellent Group Delay Variation** 

Using GPS signal carrier phase to increase accuracy in GNSS applications has been proven reliable and has made mm-level accuracy possible. However, in resolving carrier phase ambiguity, it is necessary to make sure carrier phase is received and measured accurately and that the effect of antenna and receiver on carrier phase is minimized. Maxtena’s M8HCT-A-SMA has a flat response over all GNSS bands that it covers and has minimal group delay variation over frequency. 

## **Filtering and LNA Performance** 

Maxtena’s M8HCT-A-SMA antenna has a flat response over the L1, L2 and L5 GNSS bands, with less than 1 dB variation over each band. The superior out-of-band rejection ensures minimal interference. 

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< 2 ns group delay variation over L2-band.<br>**----- End of picture text -----**<br>


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< 2 ns group delay variation over L1-band.<br>**----- End of picture text -----**<br>


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< 2 ns group delay variation over L5-band.<br>**----- End of picture text -----**<br>


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Flat conducted gain response.<br>**----- End of picture text -----**<br>


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Maxtena Inc. 7361 Calhoun Place, Suite 102 Rockville, MD 20855 1-877-629-8362 info@maxtena.com 

**www.maxtena.com** 

**Mechanical Specifications** 

|Parameter<br>Specification<br>en|Parameter<br>Specification<br>en|Parameter<br>Specification<br>en|
|---|---|---|
||Operating Temperature Range|-40 to +105˚C|
||Environmental Standards|IP67 rating|
||Cabling and Connector|No cable, male SMA connector|
||Weight|25 grams|



Diimensions are in mm. 

MAXTENA WIRELESS INNOVATIONS COMPANY 

Maxtena Inc. 7361 Calhoun Place, Suite 102 Rockville, MD 20855 1-877-629-8362 info@maxtena.com 

**www.maxtena.com** 

**DATASHEET** 

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**Maxtena Inc.** 7361 Calhoun Place, Suite 102 Rockville, MD 20855 **info@maxtena.com** | **1-877-629-8362** | **www.maxtena.com** 

Copyright © 2019 Maxtena, Inc. All rights reserved. This product is protected by U.S. and international copyright and intellectual property laws. All registered marks, trademarks, service marks and logos are property of their respective holders. Information is subject to change without notice.