915MHz Helical Monopole Antenna
Quarter wave-length monopole
Mechanically Sturdy in a compact size
2dBi Peak Gain, 68% efficiency
Dims HA.31.A: L=11mm Ø10mm
Dims HAD.A.31 EVB: 81*160*12mm
Dims HAD.B.31 EVB: 159*80*12mm
HA.31 915MHz 2dBi Helical Monopole Antenna
HA.31.A
HA.31.A
HA.31 915MHz 2dBi Helical Monopole Antenna
Overview
The HA.31.A is an ISM 915MHz quarter wave-length monopole antenna. This helical coil antenna is perfect for your smart meter, smart security system, remote asset monitoring, and other wireless communication devices. The helical coil antenna has a 2dBi Peak gain and a 68% efficiency at 915MHz on a 126.8 x 80.1mm ground plane with matching components (orthogonally mounted to ground plane, see HAD.B.31 performance). Made of copper alloy, the helical coil is mechanically sturdy, with a wide-bandwidth. It can be easily mounted on the surface of your device main board by soldering. The antenna must be connected to a ground-plane to radiate efficiently.
Technical Specification
| Name | Value |
|---|---|
| Technology | Embedded Antennas, ISM/LoRA |
| Mechanical Style | Coil |
| Impedance | 50 |
| Minimum Operating Temperature (℃) | -40 |
| Maximum Operating Temperature (℃) | 85 |
| Mounting Style | SMD/SMT |
| Termination Style | SMD/SMT |
| Antenna Connector Type | N/A |
| Length (mm) | 10.2 |
| Width (mm) | 10.2 |
| Height (mm) | 10.7 |
| Connector Body Style | Straight |
| Polarity | Linear |
| Frequency Range | 915MHz |
| Connector Polarity | None |
| Cable Length (mm) | None |
| VSWR | <2 |
| Weight (g) | 0.7 |
| RoHS | Yes |
| Gain (Max) | 1.89 |