Product Name : PowerHelix® (SL3101 Passive Iridium Antenna)

Description : PowerHelix® (SL3101 Passive Iridium Antenna)


Product Description

Built on patented PowerHelix® filtering antenna technology, the SL3101 Iridium antenna provides high performance in difficult Iridium applications using a octafilar helix design. The SL3101 antenna is ideal in applications where:

• the device is handheld, body-worn, or otherwise surrounded by high-dielectric materials that would de-tune conventional antennas;
• the antenna is tightly integrated with other antennas, e.g., Iridium/GPS receivers
• there are tight constraints on the size of the device or the amount of space allocated to ground planes;
• the orientation of the device is random; or
• the antenna will be embedded in the device.

The SL3101 antenna is balanced, which isolates it from the device and enables the antenna to reject common mode noise resident on the device ground plane. The construction and materials of the antenna constrain its near-field to a very small volume, therefore materials near the antenna have negligible de-tuning effects and the antenna maintains its pattern and efficiency in the presence of dielectric loading. Additionally due to the tightly constrained near-field the antenna can operate close to human tissue and still pass SAR. As a dielectrically-loaded antenna, the SL3101 acts as its own filter, attenuating signals from cellular phone and ISM frequencies by as much as 30dB without external filtering.

The SL3101 antenna is offered in a range of connector styles: SMA Plug; TNC Jack; TNC plug; and the antenna is enclosed in a welded plastic housing ready to plug into an Iridium transceiver or data module.