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RF antenna allows 1cm precision positioning

Posted: 26 Feb 2014 ?? ?Print Version ?Bookmark and Share

Keywords:GNSS? RF? antenna? GLONASS?

Imec and Septentrio have unveiled a collaborative design featuring an RF-enabled antenna that can be integrated into multi-frequency handheld GNSS devices supporting high precision location applications up to 1cm. The antenna was developed under the European Community's Seventh Framework Programme project HANDHELD.

The antenna is a configuration of Imec's GNSS antenna and Septentrio's GNSS RF front-end, which allows simultaneous coverage of all GPS, GLONASS and GALILEO bands. The GNSS RF front-end is characterized by an 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 device 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 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 500mW.

- Julien Happich
??EE Times Europe

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