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.

Features

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

Parameter	Specification
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

Parameter	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

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