MA-GNPK-591
GNSS GPS/Glonass Robust Navigation Antenna
The Midland Antennas MA-GNPK-591 is a robust, dome-style GNSS antenna, designed for high-precision applications across GPS (L1), QZSS (L1), GLONASS (G1), and Galileo (E1) bands, covering frequencies from 1570 MHz to 1610 MHz.
Constructed with a polycarbonate radome and an IP67-rated waterproof design, this antenna is engineered to withstand harsh environments, making it ideal for vehicle tracking, marine navigation, and outdoor GNSS applications.
The bulkhead mount with a 0.8-inch threaded wing nut ensures secure installation, while a rubber O-ring between the radome and screw base enhances water resistance.
The antenna features a built-in low-noise amplifier (LNA) with a typical gain of 29 dB and a low noise figure of 1.5 dB, ensuring amplified signal reception and improved performance in weak signal areas. With a right-hand circular polarization (R.H.C.P.) and a typical axial ratio of 3 dB, it offers reliable, high-sensitivity GNSS signal reception.
Compact and rugged, it is optimised for demanding environments, delivering consistent performance with a wide operating temperature range of -40°C to +85°C, and full weatherproofing for long-term durability.
Electrical Data
Mechanical Data
| Center Frequency: | 1575Mhz & 1596-1610 MHz |
| Polarization: | R.H.C.P. (Right Handed Circular Polarization). |
| Bandwidth | 10 MHz min. @S11≤-10 dB, 24MHz typ. @S11 |
| Gain @ 10° Elevation: | 2 dBi typical. |
| Axial Ratio: | 3 dB max. |
| Output VSWR: | 1.5 max |
| Output Impedance: | 50 ohm |
| Low Noise Amplifier | |
|---|---|
| Power Gain: | 1570 Mhz : 29db typ 1610 Mhz : 29db typ |
| Bandwidth: | 50 MHz min. |
| Noise Figure: | 1.5 typ |
| Outer Band Attenuation: | 20 dB min. @ Fo +/-50 Mhz. |
| Supply Voltages: | 2.3~5.5V DC. |
| Current Consumption: | 2.5V : 6.6mA Typ. 3V: 10.6mA Typ. 4V: 14.6mA Typ. 5V: 20.6mA Typ. |
| Output Impedance: | 50W ohm |
| Overall Performance: (antenna element, LNA & coax cable) | |
| Center Frequency: | 1570 ~1610 Mhz. |
| Gain: | At 90° vertical to sky 30 ± 4.5dBi (cable loss) Note:1 Mounted on the 60mm x 60mm square ground plane |
| Noise Figure: | 2.0 max. |
| Axial Ratio: | 3 dB max. |
| Bandwidth: | 10MHz min. |
| VSWR: | 2.0 max. |
| Output Impedance: | 50W ohm |