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¶ General Description
The Mike 19 is a high-performance, dual-band GNSS antenna designed to deliver exceptional positional accuracy in the L1 (1575.45 MHz) and L5 (1176.42 MHz) frequency bands. Supporting major satellite constellations, including GPS, Galileo, BeiDou, NavIC and QZSS, the Mike 19 ensures robust and reliable signal reception, even in challenging environments.
With an axial ratio at zenith of 3.67 dB at L5 and 1.79 dB at L1, the Mike 19 provides excellent circular polarisation performance to help minimise multipath interference and enhance signal stability and reliability. It delivers 23–25 dBiC RHCP gain across the top hemisphere, supporting strong satellite signal reception. The integrated LNA amplifies weak signals, providing superior sensitivity and enabling centimetre-level positioning accuracy. These attributes make the Mike 19 ideal for precision applications such as drone navigation, precision agriculture and survey mapping.
Housed in a compact 50 x 50 mm IP67-rated enclosure, the Mike 19 is designed for durability and versatility. Its low-profile form factor and flexible mounting options, including magnetic and adhesive bases, ensure optimal performance in outdoor and rugged environments for GNSS positioning, tracking and timing systems.
¶ Key Features
- Dual-band GPS L1 and L5 support
- High RHCP gain of 23–25 dBiC
- Median axial ratio ≤ 3.74 dB for improved multipath rejection
- Integrated LNA with 25 ± 2 dB gain for enhanced sensitivity
- Magnetic or adhesive mounting with compact IP67-rated housing
¶ Typical Applications
- Vehicle and fleet tracking, navigation and telematics
- Asset and equipment monitoring
- Precision agriculture and surveying
- Critical infrastructure timing synchronisation
- Drone, outdoor mobile and general GNSS positioning applications
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GPS L1 & L5 Antenna
Active GNSS
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IP67 Rated
Ingress Protection
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RHCP Gain
23–25 dBiC
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Magnetic Mounting
Quick Installation
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Low-Profile Design
Compact Installation
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¶ Electrical Specifications
| Impedance: | 50 Ohm |
| Polarisation: | RHCP |
| Frequency Range: |
L5: 1176.45 MHz L1: 1575.42 MHz |
| Return Loss: |
L5: -16.09 dB L1: -16.39 dB |
| VSWR: |
L5: 1.37 L1: 1.36 |
| Required Ground Plane: | Free space |
| Peak RHCP Gain (Top Hemisphere): |
L5: 23.48 dBiC L1: 25.28 dBiC |
| Axial Ratio at Zenith: |
L5: 3.67 dB L1: 1.79 dB |
| LNA Gain: | 25 ± 2 dB |
| Noise Figure: | ≤ 1.0 dB |
| Supply Voltage: | 3 - 5 V DC |
| Current Consumption: | ≤ 45 mA |
¶ Environmental Specifications
| Operating Temperature Range: | -40 °C to 85 °C |
| Storage Temperature Range: | -40 °C to 100 °C |
| Relative Humidity: | Up to 95% |
| Ingress Protection: | IP67 |
| Vibration: | 10–55 Hz with 1.5 mm amplitude |
¶ Mechanical Specifications
| Dimensions: | L = 50 mm W = 50 mm H = 18 mm |
| Weight: | 65 g |
| Connector: | SMA Male |
| Cable: | RG174 |
| Mounting Method: | Magnetic / Adhesive |
¶ Spectrum Coverage*
| ↑ Suitable band | □ Adequate band in good signal conditions | ↓ Likely to be unsuitable |
¶ GNSS Standards Band Support
| Electrical Interface | Spherical RF Measurements | |||||
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| Centre Frequency (MHz) | VSWR | Return Loss (dB) | Average RHCP Gain (dBiC) | Peak RHCP Gain (dBiC) | Median Axial Ratio (dB) | Minimum Axial Ratio (dB) |
| 1176.45 (L5) | 1.3722 | -16.0874 | 17.37 | 23.48 | 5.29 | 0.16 |
| 1575.42 (L1) | 1.3575 | -16.3859 | 19.11 | 25.28 | 6.26 | 0.25 |
| Top Hemisphere RF Measurements | Zenith RF Measurements | |||||
|---|---|---|---|---|---|---|
| Centre Frequency (MHz) | Average RHCP Gain (dBiC) | Peak RHCP Gain (dBiC) | Median Axial Ratio (dB) | Minimum Axial Ratio (dB) | RHCP Gain at Zenith (dBiC) | Axial Ratio at Zenith (dB) |
| 1176.45 (L5) | 21.20 | 23.48 | 2.89 | 0.16 | 22.43 | 3.67 |
| 1575.42 (L1) | 22.94 | 25.28 | 3.74 | 0.25 | 23.39 | 1.79 |
¶ RF Matching Performance
This section illustrates the antenna's impedance matching characteristics across the operating frequency range using VSWR and Return Loss measurements.
¶ RF Zenith
¶ RF Top Hemisphere
¶ RF Spherical
The following graphs display the Average and Peak RHCP Gain across the entire spherical coverage of the antenna. These metrics provide a comprehensive view of the antenna’s ability to receive signals from satellites at all elevations and directions.
Consistently high gain across the sphere ensures strong and stable GNSS reception in a variety of operating conditions.
¶ ZX and YZ Plane Axial Ratio Plots (Zenith is at 0 degrees)
The following graph shows how well the antenna maintains circular polarisation at different elevation angles. A lower axial ratio ensures better GNSS signal reception, especially at low elevations, which is crucial for applications requiring strong performance in obstructed environments or wide-angle satellite visibility.
¶ Test Setup (in Free Space)
¶ 2D Radiation Plots
1176.45 MHz (L5)
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1575.42 MHz (L1)
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¶ 3D Radiation Plots
1176.45 MHz (L5)
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1575.42 MHz (L1)
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¶ Ordering Details
| Part Number | Description |
|---|---|
| MIKE19/1M/SMAM/S/S/26 |
IP67 Active High Accuracy Dual Band GNSS L1/L5 Antenna 1 Metre Cable and SMA Male Connector |
| MIKE19/3M/SMAM/S/S/26 |
IP67 Active High Accuracy Dual Band GNSS L1/L5 Antenna 3 Metre Cable and SMA Male Connector |