Antena Gps Geohelix-s Activa Sarantels Itytarg

Product Description

Built on patented PowerHelix® fi ltering
antenna technology, the GeoHelix-S surface-mount
high-gain GPS antenna is the smallest active quadrifi lar helix
antenna available, providing high performance in diffi cult GPS
applications. The GeoHelix-S integrates a high-performance, high-gain,
low-noise amplifi er with Sarantel’s GeoHelix antenna for receivers requiring
an active input.

The GeoHelix-S 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., Bluetooth®/GPS receivers or
GPS/GSM mobile phones;
• there are tight constraints on the size of the device or the amount of space allocated to ground
planes;
• the GPS receiver requires 20dB or more of input pre-amplifi cation;
• the orientation of the device is random; or
• the antenna will be embedded in the device.

The GeoHelix-S 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-fi eld to a very small volume, therefore materials near the antenna have negligible de-tuning
effects and the antenna maintains its pattern and effi ciency in the presence of dielectric loading. As a dielectrically
-loaded antenna with a high-performance SAW fi lter, the GeoHelix-S antenna effectively attenuates signals from
common GSM and ISM frequencies by as much as 55dB, minimizing the need for additional fi ltering.

The GeoHelix-S antenna may be deployed in an external, “stub-style” confi guration, but it is also a simple antenna to
embed due to its isolation properties. The antenna is deployed with either a black radome or an ABS plastic slee