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GPS antennas suit M2M telematics apps

Posted: 12 Oct 2009 ?? ?Print Version ?Bookmark and Share

Keywords:GPS? antenna? M2M? telematics?

SMT GSP antenna

Taoglas has developed the SGP series of first SMT GPS antenna products guaranteed to pass final device product certification for reflow solder profile tests, device environmental tests (temperature, humidity etc) and mechanical testing (shock, vibration etc.) for machine-to-machine (M2M) telematics devices.

With the SGP line, M2M manufacturers now have a GPS antenna that is delivered via tape and reel and can be mounted during the standard reflow process. Automatic assembly brings many efficiency savings including quicker and more accurate assembly and consistency of electrical connection. In this unique patent-pending design, Taoglas has taken the traditional patch antenna technology, mounted the antenna onto a PCB and delivered the feedpoint out to the side of the patch without exposing the feedline. While current market antenna feedpoints crack during high temperature and vibration tests because of exposed feed lines, the SGP antennas are durable and resilient enough to withstand temperatures of -40C to +105C, and vibrations of 20G for cars and motorcycles. SGS certification has been made for these results.

There are four sizes offered; 25mm x 25mm x 5mm, 18mm x 18mm x 5mm, 15mm x 15mm x 5mm and 12mm x 12mm x 4.5mm. Future products in the series will be; 25mm x25mm x 2.8mm and 18mm x 18mm x 2.8mm for lower device PCB profile.

"All of the best solutions are simple, and this is the case with the surface mount SGP," said Dermot O'Shea, director, Taoglas. "Because this antenna is mounted onto a PCB, there is no pin sticking out. For the first time, the antenna and module can now be mounted on the same side of the board, freeing up valuable real estate on compact mobile devices. Components can be placed directly on the other side of the board from the patch antenna. Pads are used for soldering the antenna to the board keeping it stable and enabling it to withstand high temperature, humidity and environmental tests. Following on from design wins in the OEM automotive area, we anticipate a high degree of interest from the M2M market for this ground-breaking design."

GPS patch antenna technology has been proven across the industry to be the best antenna technology for receiving GPS signals. It offers high gain, a narrow bandwidth and can be right-hand circularly polarized, matching the characteristics of the actual signal itself. With the new generation of receivers, patch antennas can also pick up signals even when placed upside-down, in effect making them preferable to the much inferior gain of linear polarized chip, helix, and PIFA antenna solutions.

- Henri Arnold
EE Times Europe

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