Datasheet HE Series 868 MHz Helical Antenna Linx 868 MHz HE series compact printed circuit board (PCB) mount helical monopole antennas support low-power, wide-area (LPWA) applications including LoRaWAN and Sigfox , remote controls, and ISM band applications in the 862 MHz to 876 MHz range. The HE series antennas are made from 1.3 mm ANT-868-HETH diameter berylium copper for use in PCB-mount installations requiring a rugged antenna design. ANT-868-HESM Designed for reflow-solder mounting directly to a printed circuit board for high-volume applications, the 868-HESM offers a surface-mount design and the 868-HETH is for use in a through-hole installation. Features Applications Performance at 868 MHz Low-power, wide-area (LPWA) applications VSWR: 2.2 LoRaWAN Peak Gain: 5.6 dBi Sigfox Efficiency: 79% Remote sensing, monitoring and control Direct PCB attachment Security systems Reflow- or hand-solder assembly Industrial machinery Omnidirectional radiation pattern Automated equipment Compact size AMR (automated meter reading) 25.4 mm x 15.3 mm x 8.9 mm Internet of Things (IoT) devices Smart Home networking Hand-held devices Ordering Information Part Number Description ANT-868-HESM 868 MHz helical surface-mount antenna ANT-868-HETH 868 MHz helical through-hole antenna Available from Linx Technologies and select distributors and representatives.HESM Series 8.9mm 0.35in 15.3mm 315 0.60in ANT-868-HE Series Datasheet 38.1 mm 1.3mm (1.50 in) 0.05in Table 1. Electrical Specifications ANT-868-HExx 868 MHz 8.9 mm HETH Series Frequency Range 862 MHz to 876 MHz(0.35 in) 8.9 mm VSWR (max) 2.2 (0.35 in) Peak Gain (dBi) 5.6 Average Gain (dBi) -1.1 315 Efficiency (%) 79 15.3 mm (0.60 in) Polarization Linear 15.3 mm 418 Radiation Omnidirectional (0.60 in) 38.1 mm Max Power 15 W 1.3 mm (1.50 in) (0.05 in) 38.1 mm Wavelength 1/4-wave 1.3 mm (1.50 in) Electrical Type Monopole (0.05 in) Impedance 50 ESD Sensitivity NOT ESD sensitive. As a best practice, Linx may use ESD packaging. Electrical specifications and plots measured with a 84.0 mm x 38.0 mm (3.31 in x 1.50 in) reference ground plane. 8.9 mm 8.9 mm (0.35 in) (0.35 in) Table 2. Mechanical Specifications ANT-868-HExx Connection ANT-868-HESM = surface-mount, ANT-868-HETH = through-hole Operating Temperature Range -40 C to +85 C 15.3 mm 15.3 mm 418 Weight 1.0 g (0.04 oz) (0.60 in) (0.60 in) 433 Dimensions 25.4 mm x 15.3 mm x 8.9 (1.00 in x 0.60 in x 0.35 in) 38.1 mm 1.3 mm 38.1 mm (1.50 in) 1.3 mm (0.05 in) (1.50 in) (0.05 in) Product Dimensions Figure 1 provides dimensions of the 868-HESM antenna. The dimensions of the 868-HETH antenna are shown in Figure 2. 8.9 mm (0.35 in) 8.9 mm (0.35 in) 15.3 mm 433 15.3 mm(0.60 in) 868/ (0.60 in) 38.1 mm 1.3 mm 25.4 mm 916 (1.50 in) (0.05 in) (1.00 in) 1.3 mm (0.05 in) Figure 1. 868-HESM Antenna Dimensions 8.9 mm (0.35 in) 15.3 mm 868/ (0.60 in) 25.4 mm 916 1.3 mm (1.00 in) (0.05 in) Figure 2. 868-HETH Antenna Dimensions Packaging Information The HE series antennas are packed in a clear plastic PVC bag, labeled with model number and quantity. Distribution channels may offer alternative packaging options. 2