Iridium IoT Certus 9704 antennas

The Iridium IoT Certus 9704 Series antennas are precisely tuned for the Iridium network – 1,616–1,626.5 MHz. The use of our proprietary Dielectrix dielectric-loaded multi-helical technology, these antennas deliver highly resilient performance in a remarkably compact form factor — just 42 mm tall and 16 mm in diameter for the embedded version.

Paired with the Iridium Certus 9704 module, the compact 9704 antenna provides a versatile solution for IoT applications requiring reliable, global satellite connectivity, especially in remote areas where traditional networks are unavailable. With support for Iridium Messaging Transport (IMT), the antenna is optimised for low-latency data transmission, ensuring dependable and efficient communication across diverse IoT solutions.

Key Advantages

The Iridium IoT Certus 9704 Series offers several distinct advantages:

• Consistent and Predictable Gain Patterns: The dielectric design ensures a stable and reliable electromagnetic environment, enabling consistent performance.
• Interference Resistance: By confining nearfields within the dielectric, the Helix antenna minimises susceptibility to interference and coupling effects, making it highly reliable in noisy or challenging environments.
• Low Elevation Angle Performance: The cardioid radiation pattern ensures excellent connectivity even at low elevation angles, supporting extended satellite visibility from horizon to horizon.
• Compact Form Factor: The dielectric-loaded design significantly reduces size compared to air-core antennas, making it ideal for space-constrained applications.

The Iridium IoT Certus 9704 Series is available in both embedded and encapsulated versions with an SMA connector. Full technical details can be found in the downloadable data sheets. Additionally, Helix offers design support services to assist customers in developing embedded applications, ensuring alignment with Iridium Certus 9704 network criteria.