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RF/Microwave??

GPS functionality shrinks for mobile phones

Posted: 20 Feb 2006 ?? ?Print Version ?Bookmark and Share

Keywords:Janine Love? SiRF Technology? receiver? A-GPS? GSCi-5000?

SiRF Technology Holdings Inc. announced a tiny receiver A-GPS chip, the GSCi-5000, optimized to address the space and cost constraints of cellular handsets.

The ROM-based GSCi-5000 receiver packs all of the functional blocks of a GPS receiver into a 4-by-6-by-1mm-sized, 77-pin BGA chip. An integrated low noise amplifier and fractional synthesizer also reduce overall system cost and size, while SiRF's proprietary patent-pending technology minimizes the impact of RF jamming and compression issues which can hinder the late stages of the handset development cycle.

Overall average power consumption is minimized using a combination of self-managed periodic fix modes and a 5?A sleep mode. The new architecture utilizes the 90nm CMOS and 0.18?m SiGe process technologies.

Using a protocol based around the Third Generation Partnership Project (3GPP) A-GPS messages, the GSCi-5000 is optimized for host software integration.

- Janine Love
eeProductCenter




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