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¶ General Description
The Alpha 16 adhesive antenna features an efficiently tuned, low-profile patch design, optimised for a wide range of RF, M2M and telemetry applications operating in the 868 MHz and 915 MHz ISM bands.Offering 3.5 dBi gain, this compact, ground-plane-independent antenna is already proven in numerous applications where space is at a premium and integrates easily into most telemetry products. Its discreet design is particularly well suited to installations where equipment needs to remain unobtrusive.
Standard configurations include a 1 m cable with either an SMA male or reverse-polarity SMA male connector, and a 3 m cable with a right-angle reverse-polarity SMA male connector. Alternative cable lengths and connector types are available for volume orders.
¶ Key Features
- 868 MHz and 915 MHz operation
- 3.5 dBi gain
- Low-profile, ground-plane-independent patch antenna
- Self-adhesive mounting for quick and easy installation
- Available with multiple cable lengths and SMA connector configurations
¶ Typical Applications
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Smart metering
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Remote monitoring and telemetry
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Industrial automation and control
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Agricultural and environmental monitoring
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Security and alarm systems
ISM / LPWAN
868 & 915 MHz
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3.5 dBi
Average Gain
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Compact Patch
Low-Profile Design
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Adhesive Mount
Quick Installation
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No Ground Plane Required
Easy Integration
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¶ Electrical Specifications
| Usable Frequency Coverage: |
863–870 MHz 902–928 MHz |
| Impedance: | 50 Ω |
| Maximum Input Power: | 10 W |
| Polarisation: | Linear |
| Average Gain: | |
| 863–870 MHz: | 3.8 dBi |
| 902–928 MHz: | 3.37 dBi |
| Average Radiation Efficiency: | |
| 863–870 MHz: | 46.67% |
| 902–928 MHz: | 54.24% |
| Required Ground Plane: | Free space (tested on glass) |
¶ Environmental Specifications
| Operating Temperature Range: | -40°C to 85°C |
| Storage Temperature Range: | -20°C to 60°C |
¶ Mechanical Specifications
| Dimensions: |
L = 39.9 × W = 33.5 × H = 5.5 mm (excluding cable) |
| Weight: | 20 g |
| Cable: | RG174 |
| Connector: | SMAM / SMAM-RP (straight or right-angle) |
| Mounting Method: | 3M adhesive pad |
| Housing Material: | ABS |
¶ Spectrum Coverage*
The Spectral View Diagram visually describes the performance of the antenna from 400 MHz to 6000 MHz. Key frequencies are marked highlighting the technology used and the colour represents the performance at that frequency, taking into consideration the VSWR and radiated efficiency of the antenna.
| ↑ Suitable band | □ Adequate band in good signal conditions | ↓ Likely to be unsuitable |
¶ Peak Gain vs. Frequency
¶ Return Loss
¶ VSWR
¶ Radiation Efficiency
¶ ISM Standards Frequency Support*
| Application | Frequency Range (MHz) | Average Efficiency (%) | Maximum VSWR | Peak Gain from Highest Direction (dBi) | Use Indicator |
|---|---|---|---|---|---|
| ISM 868 MHz | 863–870 | 46.67 | 2.05 | 3.80 | ↑ |
| ISM 915 MHz | 902–928 | 54.24 | 1.77 | 3.59 | ↑ |
| ↑ Suitable band | □ Adequate band in good signal conditions | ↓ Likely to be unsuitable |
¶ Test Setup (on glass)
¶ 2D Radiation Plots
| 868 MHz | ||
| XY | XZ | YZ |
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| 915 MHz | ||
| XY | XZ | YZ |
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¶ 3D Radiation Plots
| 868 MHz | 915 MHz | |
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¶ Ordering Details
| Part Number | Description |
|---|---|
| ALPHA16/1M/SMAM/S/RP/17 |
ISM 868 & 915 MHz Adhesive Patch Antenna 1 Metre Cable with Reverse-Polarity SMA Male Connector |
| ALPHA16/1M/SMAM/S/S/17 |
ISM 868 & 915 MHz Adhesive Patch Antenna 1 Metre Cable with SMA Male Connector |
| ALPHA16/3M/SMAM/RP/RA/17 |
ISM 868 & 915 MHz Adhesive Patch Antenna 3 Metre Cable with Right-Angle Reverse-Polarity SMA Male Connector |