Datasheet HE Series 916 MHz Helical Antenna Linx 916 MHz HE series compact printed circuit board (PCB) mount helical monopole antennas support low-power, wide-area (LPWA) applications including LoRaWAN , remote controls, and ISM band applications in the 902 MHz to 930 MHz range. The HE series antennas are made from 1.3 mm ANT-916-HETH diameter berylium copper for use in PCB-mount installations requiring a rugged antenna design. ANT-916-HESM Designed for reflow-solder mounting directly to a printed circuit board for high-volume applications, the 916-HESM offers a surface-mount design and the 916-HETH is for use in a through-hole installation. Features Applications Performance at 916 MHz Low-power, wide-area (LPWA) applications VSWR: 1.5 LoRaWAN Peak Gain: 6.4 dBi Remote sensing, monitoring and control Efficiency: 75% Security systems Direct PCB attachment Industrial machinery Reflow- or hand-solder assembly Automated equipment Omnidirectional radiation pattern AMR (automated meter reading) Compact size Internet of Things (IoT) devices 25.4 mm x 15.3 mm x 8.9 mm Smart Home networking Hand-held devices Ordering Information Part Number Description ANT-916-HESM 916 MHz helical surface-mount antenna ANT-916-HETH 916 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-916-HE Series Datasheet 38.1 mm 1.3mm (1.50 in) Table 1. Electrical Specifications 0.05in ANT-916-HExx 916 MHz 8.9 mm HETH Series Frequency Range 902 MHz to 930 MHz(0.35 in) VSWR (max) 8.9 mm 1.5 (0.35 in) Peak Gain (dBi) 6.4 Average Gain (dBi) -1.4 315 Efficiency (%) 75 15.3 mm (0.60 in) Polarization Linear 15.3 mm Radiation Omnidirectional 418 (0.60 in) Max Power 38.1 mm 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-916-HExx Connection ANT-916-HESM = surface-mount, ANT-916-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 916-HESM antenna. The dimensions of the 916-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. 916-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. 916-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