Antenna enables global positioning to one centimetre

February 24, 2014 // By Julien Happich
Imec and Septentrio have collaborated on the design of an antenna-RF integrated element for a multi-frequency Global Navigation Satellite Systems (GNSS) antenna aimed at GPS, GLONASS, BeiDou and GALILEO.

Developed under the European Community’s Seventh Framework Programme project HANDHELD, the compact antenna can be integrated in multi-frequency handheld GNSS devices to support high precision location applications up to 1 centimetre.

The companies have integrated imec’s GNSS antenna and Septentrio’s GNSS RF front-end so the antenna can simultaneously receive all GPS, GLONASS and GALILEO bands. It has a uniform gain and phase coverage over the complete upper hemisphere with strong suppression of unwanted reflected signals below or in the vicinity of the GNSS receiver.

The GNSS RF front-end, based on established market leading front-end technology developed by Septentrio, is characterized by a superb out-of-band interference rejection to avoid notably device self-interference with other radiation sources such as Bluetooth and WLAN radios, as well as other ambient intentional and non-intentional interference.

The compact multi-frequency antenna is well suited for Septentrio’s AsteRx-m receiver, a credit card-sized dual frequency GNSS receiver that provides centimetre accuracy at less than 500 mW.

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