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RF/Microwave??

Multigigahertz antenna gets on board

Posted: 16 Jun 2006 ?? ?Print Version ?Bookmark and Share

Keywords:Loring Wirbel? EE Times? Centurion Wireless Technologies Inc.? NanoAnt? surface-mount antenna?

Centurion Wireless Technologies Inc. demonstrated its NanoAnt surface-mount antenna at the recent CTIA Wireless 2006. NanoAnt's design makes embedded multigigahertz antennas a more mainstream approach than alternatives based on microelectromechanical systems or unusual substrates, according to Centurion.

NanoAnt, offered for Wi-Fi, Bluetooth and GPS services operating between 1.575GHz and 6GHz, does not require a ground, nor does it use thermal- or actuator-based MEMS. Centurion's IP centers on the means of molding a metal radiative element inside a two-leg support structure and removing lossy plastic from around the antenna without interfering with its RF lobe.

One of the two legs of the surface-mount package acts as an RF feed, and the other mechanically attaches to the circuit board. The tiny size of the antenna package allows it to be used by high-volume pick-and-place equipment, packaged in tape-and-reel devices.

Impedance of 50 ohm can be achieved with companion-matching circuits provided by Centurion and its parent, Laird Technologies. Two sizes of antenna are offered: a 10-by-3-by-4mm device for GPS, WLAN and public safety; and a 2.5-by-2-by-2mm device for Bluetooth. An evaluation board for both NanoAnt sizes also is available.

- Loring Wirbel
EE Times




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