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¶ General Description
The Tango 20 is a compact, puck-shaped GPS L1 antenna designed for secure indoor and outdoor mounting. Tuned to the 1575.42 MHz frequency, it is well suited to a wide range of GNSS tracking applications, including vehicle, fleet and asset tracking, mobile applications and general positioning systems.Delivering up to 25 dBiC RHCP gain across the top hemisphere with an axial ratio of 0.88 dB at zenith, the Tango 20 provides excellent circular polarisation for strong, stable satellite reception and fast acquisition. The built-in Low Noise Amplifier (LNA) provides 28 dB gain to enhance weak signals and help reduce the time to first fix. Its rugged ABS enclosure and M10 screw-thread base provide durable and secure mounting for demanding environments.
The Tango 20 is supplied as standard with a 3 m RG174 cable and SMA male connector. Alternative cable lengths and connector types can be specified for high-volume projects.
¶ Key Features
- GPS L1 band operation at 1575.42 MHz
- Top hemisphere RHCP gain 24 ± 1 dBiC
- Axial ratio at zenith ≤ 1 dB for improved signal purity
- Rugged M10 screw-mount design for secure installation
- Compact, weather-resistant ABS enclosure
¶ Typical Applications
- Vehicle and fleet tracking systems
- Outdoor GNSS modules and smart kiosks
- Industrial asset tracking
- Remote positioning and monitoring systems
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GPS
L1 Antenna
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UV & Water Resistant
Outdoor Radome
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Active Antenna
Integrated LNA
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Through-Hole
Concealed Cable Mount
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Low-Profile Design
Compact Installation
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¶ Electrical Specifications
| Impedance: | 50 Ohm |
| Polarisation: | RHCP |
| Frequency Range: | 1575.42 MHz |
| Return Loss: | −24.4 dB |
| VSWR: | 1.13 |
| Required Ground Plane Independent: | Free space |
| Filter Insertion Loss: | <3 dB |
| Peak RHCP Gain (Top Hemisphere): |
24.55 dBiC |
| Axial Ratio at Zenith: | 0.88 dB |
| Noise Figure: | <1.5 dB |
| Supply Voltage: | 2.2–5 V DC |
| Current Consumption: | 5–15 mA |
¶ Environmental Specifications
| Operating Temperature range: | -40°C to 85 °C |
| Storage Temperature range: | -40°C to 85 °C |
| Relative Humidity: | Up to 95% |
¶ Mechanical Specifications
| Dimensions: | Ø 46 mm × H 14.5 mm |
| Weight: | 74 g |
| Cable Type: | RG174 |
| Cable Length: | 3 m (standard) |
| Connector: | SMA Male |
| Mounting Method: | M10 screw thread |
| Maximum Material Thickness: | 4.5 mm |
| Housing Material: | ABS |
¶ Spectrum Coverage*
| ↑ Suitable band | □ Adequate band in good signal conditions | ↓ Likely to be unsuitable |
¶ GNSS Standards Band Support
| Electrical Interface | Spherical RF Measurements | |||||
|---|---|---|---|---|---|---|
| Centre Frequency (MHz) | VSWR | Return Loss (dB) | Average RHCP Gain (dBiC) | Peak RHCP Gain (dBiC) | Median Axial Ratio (dB) | Minimum Axial Ratio (dB) |
| 1575.42 (L1) | 1.3837 | -15.8648 | 23.70 | 32.95 | 6.29 | 0.48 |
| 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) |
| 1575.42 (L1) | 29.95 | 32.95 | 5.61 | 3.74 | 32.30 | 5.73 |
¶ 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
1575.42 MHz (L1)
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¶ 3D Radiation Plots
1575.42 MHz (L1)
¶ Ordering Details
| Part Number | Description |
|---|---|
| TANGO62/0.1M/SMAM/S/S/48 |
Single-Band GPS L1 Screw Mount Puck Antenna 0.1 Metre Cable RG174 and SMA Male Connector |