Sarantel

Sarantel's PowerHelix antenna technology is the commercialization of 20 years of research in balancing electric fields across a dielectric-core. Their technology enables dense electro-magnetic near-fields to be stored in a low-loss dielectric material. This approach reduces the amount of close-range electromagnetic energy that a user of a cell phone, GPS or other mobile technology is exposed to.
Sarantel's technology is geared towards applications of wireless antennas with "in-use" conditions where match and gain characteristics do not vary with changing use scenarios and towards applications that experience significant near-field interference.
In certain applications, antennas for wireless products that are used close to the human body should be designed resonating independently from the wireless product. This approach reduces the interference from human bodies called ‘body loading' by removing the regions of high electro-magnetic field density from the areas that are occupied by human tissues when the wireless product is "in use". This method reduces the aperture size of the antenna and achieves a higher degree of electrical stability in the presence of the human body. It also reduces in-band "common-mode" noise from conducted power on the device chassis so that the approach also enables integration of multiple radios into a smaller device with reduced interference.
Sarantel's topology and feed system is designed to provide electromagnetic isolation, rather than to resonate with the box as is the case with most conventional antennas.
Sarantel also provides MIMO solutions for mobile WiMAX, 3G-LTE and WiFi IEEE801.11n, and Iridium antennas where high data throughput and range depend on the isolation between the multiplicity of receiving and transmitting antennas on the box.

Sarantel's antenna products are used in a broad range of GPS, satellite radio, military and satellite phone applications (see Applications).
The company's primary focus is on designing and manufacturing patented dielectrically loaded antenna technology which claims to improve the signal quality, reduce antenna size and reduce the impact of ‘body loading' often associated with conventional antenna technologies.
The R&D efforts are mostly focused on reducing near-field interference to improve the range and quality of wireless communications.

Applications: Sarantel's antennas exist inside the following types of applications:

Application	Examples
Satellite Radio	XM Satellite Radio MyFi
PDAs/PNDs	HP iPAQ RX5900 Travel Companion, Hertz NeverLost
Sports & Games	Garmin Colorado, SkyGolf SG1,2,2.5,5
Telematics/Trackers	Pocket Finder, Flextrack Lommy
Lone Worker Protection	RomTrac
Location Based Services	TomTom Mobile 5
Satellite Phone	Iridium
Military	SATHI PDA plus multiple customer confidential products ranging from munitions to tactical radios