¶ General Description
The Echo 36B is a compact embedded Flexible Printed Circuit (FPC) antenna engineered for reliable connectivity across the 868 MHz and 915 MHz ISM bands. It achieves a radiation efficiency of 42%, with gain from 1–3 dBi, making it an excellent choice for LPWAN and industrial IoT applications requiring dependable long-range communication.
Its ultra-thin, flexible construction allows the antenna to fit into compact and space-constrained devices where a conventional rigid antenna may be impractical. This provides greater installation versatility, while the adhesive back layer enables quick and secure mounting inside an enclosure. For best performance, the antenna should be mounted on a plastic or non-conductive surface.
The Echo 36B is supplied with a 100 mm coax cable and U.FL/I-PEX connector, providing straightforward connection to embedded wireless modules. Alternative cable lengths and connector types may also be available for higher-volume requirements.
¶ Key Features
- 868 MHz & 915 MHz ISM band support
- High-efficiency performance
- Gain 1–3 dBi
- Flexible ultra-thin FPC construction
- Adhesive back layer for easy installation
¶ Typical Applications
-
LPWAN & LoRaWAN devices
-
Smart metering systems
-
Remote monitoring equipment
-
Industrial IoT sensors
-
Building automation systems
|
1–3 dBi
Gain
|
ISM / LPWAN
868 & 915 MHz
|
Industrial IoT
Sub-GHz Wireless
|
Adhesive Mount
Easy Installation
|
¶ Electrical Specifications
| Usable Frequency Coverage: |
863–870 MHz 902–928 MHz |
| Impedance: | 50 Ohm |
| Polarisation: | Linear |
| Gain: | 1–3 dBi |
| Radiation Efficiency: | 42% |
| Required Ground Plane: |
Free space (tested on 2 mm acrylic sheet) |
¶ Environmental Specifications
| Operating Temperature Range: | -30°C to +75°C |
¶ Mechanical Specifications
| Dimensions: |
110 mm × 21 mm × 0.2 mm (without cable and connector) |
| Cable: | ⌀ 0.81 x 100 mm coaxial |
| Connector: | U.FL/I-PEX |
| Mounting Method: | Embedded |
¶ 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 | 75.51 | 1.72 | 7.03 | ↑ |
| ISM 915 MHz | 902 - 928 | 68.45 | 2.12 | 7.19 | ↑ |
| ↑ Suitable band | □ Adequate band in good signal conditions | ↓ Likely to be unsuitable |
¶ Test Setup (on 2 mm Acrylic Sheet)
¶ 2D Radiation Plots
| 868 MHz | ||
| XY | XZ | YZ |
|
|
|
| 915 MHz | ||
| XY | XZ | YZ |
|
|
|
¶ 3D Radiation Plots
| 868 MHz | 915 MHz | |
|
|
¶ Ordering Details
| Part Number | Description |
|---|---|
| ECHO36B/0.1M/IPEX/S/S/26 |
868 / 915 MHz Embedded FPC Antenna UFL Connector 100 mm Coax OD 0.81 |
| ECHO36B/0.25M/IPEX/S/S/26 |
868 / 915 MHz Embedded FPC Antenna UFL Connector 250 mm Coax OD 0.81 |