The Pulse UWB family includes the W3540, W3541, and W3542 planar antennas. The antennas are compact, lightweight, and at a height of 0.8 millimeters (mm), some of the thinnest antennas on the market. All versions have a minimum of minus 10 decibels (dB) return loss. Dimensions of the W3540 are 10.2mm wide x 13.35mm long x 0.8mm high, its weight is 0.27 grams (g), and its ground clearance under the antenna is 20.0mm x 13.5mm. They are best for applications of 2.7 to 8.2 GHz, 3.1 to 4.95 GHz UWB low band, and 6.9 to 8.5 GHz UWB high band. For applications of 4.5 to 14.0 GHz, Pulse offers the W3541. It is 6.5 x 8.0 x 0.8mm, with a weight of 0.082g, and a ground clearance under the antenna of 10.0mm x 8.5mm. The W3542 is 5.0 x 6.0 x 0.8mm, has a weight of 0.046g, a ground clearance under the antenna of 8.1mm x 6.5mm, and is best for applications in the 6.3 to 12.0 GHz range.

These UWB antennas provide omni-directional radiation to assure full 360-degree coverage, have a specially shaped patch-type radiator to enable expanded signal coverage, and deliver constant gain across the operation band for secure signal uniformity. The antennas have an impedance of 50 Ohms and operate at temperatures of minus 40 to plus 85 degrees Celsius. They are fully surface mount device (SMD) compatible and RoHS compliant.

"Pulse's economical UWB antenna family meets the market need for wider bandwidths to accommodate high-speed transmission," said Keng Chen, senior product manager for Pulse's Antenna Division. "The antennas' patch-type radiator enables the best signal coverage in the market."

The UWB antennas are available in trays. Lead time is six to eight weeks. Prices start at $0.40 per unit for quantities of 100,000. Individual part pricing may vary due to order configuration and shipping destination. Contact Pulse directly for engineering samples. Detailed specifications are available on data sheets:

• W3540 at http://www.pulsefinland.com/index.php?342  
• W3541 at http://www.pulsefinland.com/index.php?343  
• W3542 at http://www.pulsefinland.com/index.php?344

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