Multi-Frequency Active Maxtena Antenna M4HCT-A-SMA

  • Multi-Frequency Active Maxtena Antenna M4HCT-A-SMA
Multi-Frequency Active Maxtena Antenna M4HCT-A-SMA
The M4HCT-A-SMA is an active multi-frequency, high-accuracy, GNSS antenna for the L1 GPS, Galileo, Beidou and GLONASS bands. 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 M4HCT-A-SMA is ideal for applications requiring minimal integration effort or for retrofitting existing products. The antenna is equipped with an O-ring.


    • Quadrifilar helix antenna
    • Concurrent GNSS reception on L1: GPS, GLONASS, Galileo, Beidou
    • Rugged IP67 rating with SMA mount
    • Small form factor
    • Ground plane independent
    • GIS, RTK and other high accuracy GNSS applications
    • Low power consumption
    • Low phase center variation over azimuth and elevation and among different samples
    • Ultra-lightweight
    • Automotive grade electronics

Passive Antenna Performance



Frequency: 1559-1607 MHz (L1, E1, B1, B1-2, G1)
Peak Efficiency: 49%
Polarization: RHCP
Realized Gain: 0.5 dB
Axial Ratio: Max 0.9 dB at the Zenith
VSWR: Max 2:1
Beamwidth: 125˚


Phase Center Variation

Maximum Phase Center Variation (mm)

In azimuth plane: Max 10 mm
As low as 40 degree elevation: Max 10 mm
Between samples: Max 5 mm
Over frequency band: Max 10 mm


RF Specifications



Conducted Gain: 30 dB ±3 dB
Noise Figure: 1.5 dB typical, 2 dB max
Voltage: 3.0 to 5.0 V
Current: 25 mA max
Out of Band Rejection: 40 dBc
Group Delay Variation: Less than 5ns over GNSS bands
EMI Immunity Out of Band: 30 V/m
ESD Circuit Protection: 15 kv human body model air discharge


Mechanical Specifications



Operating Temperature Range: -40 to +105˚C
Environmental Standards: IP67 rating
Cabling and Connector: No cable, male SMA connector
Weight: 25 grams