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¶ General Description
The Delta 61 is a compact, active GPS L1 antenna featuring a 4-axis ceramic helix design for dependable satellite reception. Its stubby profile and direct SMA Male connection provide a practical solution for space-constrained installations.
The adjustable hinge offers 0°, 45° and 90° positioning options, allowing the antenna to be orientated for optimal satellite visibility while accommodating different device layouts and mounting orientations. The integrated Low Noise Amplifier (LNA) enhances weak GNSS signals, while right-hand circular polarisation (RHCP) supports consistent reception across the top hemisphere, helping to improve positioning reliability and reduce acquisition times.
Encased in a durable TPU housing for demanding outdoor and mobile environments, the Delta 61 combines a compact form factor ideal for handheld and mobile applications with lightweight construction that reduces strain on portable and embedded devices. This makes it particularly suitable for vehicle tracking, handheld GPS receivers, IoT devices and portable navigation equipment.
The Delta 61 is supplied with an SMA Male connector as standard, with alternative connector configurations available for high-volume projects.
¶ Key Features
- Supports GPS L1, Galileo E1, BeiDou B1C and QZSS L1
- Compact stubby design with SMA male connector
- Top-hemisphere RHCP gain up to 12 dBiC
- Low power consumption with 1.4–3.6 V DC supply
- Lightweight 10 g construction
¶ Typical Applications
- Vehicle and fleet tracking units
- Handheld GNSS receivers
- Portable navigation systems
- IoT tracking and telemetry devices
- Rugged outdoor GNSS modules
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GPS
L1 Antenna
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Active Antenna
Integrated LNA
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RHCP Gain
≤ 12 dBiC
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QFH Design
Low-Elevation Reception
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Compact Direct Mounting
Simple Installation
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¶ Electrical Specifications
| Impedance: | 50 Ω |
| Polarisation: | RHCP |
| Frequency Range: | 1575.42 MHz |
| Return Loss: | −16.1195 dB |
| VSWR: | 1.3710 |
| Required Ground Plane: | Free space |
| Peak RHCP Gain (Top Hemisphere): |
12.11 dBiC |
| Supply Voltage: | 1.4–3.6 V DC |
| Current Consumption: | ~4 mA |
¶ Environmental Specifications
| Operating Temperature Range: | −40 °C to 85 °C |
| Storage Temperature Range: | −40 °C to 85 °C |
| Relative Humidity: | 5 % non-condensing |
¶ Mechanical Specifications
| Dimensions: | Ø 12.5 × 100 mm |
| Weight: | 10 g |
| Housing Material: | TPU Rubber |
| Connector: | SMA Male |
| Mounting Method: | Terminal Mount |
¶ 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) | 1.3710 | -16.1195 | 6.29 | 17.81 | 15.19 | 1.09 |
| Top Hemisphere RF Measurements | ||||
|---|---|---|---|---|
| Centre Frequency (MHz) | Average RHCP Gain (dBiC) | Peak RHCP Gain (dBiC) | Median Axial Ratio (dB) | Minimum Axial Ratio (dB) |
| 1575.42 (L1) | 4.34 | 12.11 | 15.25 | 5.52 |
¶ 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.
¶ 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 |
|---|---|
| DELTA60/x/SMAM/S/S/32 |
Stubby Terminal Mount Active GPS L1 Helical Antenna SMA Male Connector |