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Dual-mode GNSS RF receivers take on industrial apps

01 Aug 2014

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GigOptix Inc. introduced its global navigation satellite system (GNSS) RF receiver for road, maritime, agriculture, and surveying applications. This device is expected to be one of several RF focused products the company will bring to market over the next few quarters stemming from the recently acquired Tahoe RF Semiconductor, now called the GigOptix-Auburn RF Design Centre after its integration into GigOptix earlier this month.

The new product, dubbed EXG0201, marks the introduction of GNSS RF receivers by GigOptix. It is a low-power consumption, highly linear RF GNSS receiver in a small Quad Flat No-Lead (QFN) package. The fully integrated device is optimised for industrial applications and has dual channels supporting both the upper and lower GNSS bands.

The EXG0201 provides two modes of operation, a high resolution mode and a low resolution, low power mode. It integrates RF signal processing, 12- or 3bit analogue to digital converters, dual fractional-N synthesisers (with a shared reference to generate RF LO signals) and a three-wire SPI digital interface to provide all the necessary functionality required to create a high-end GNSS receiver system. All of the EXG0201 sub-systems are programmable through the use of the on-chip SPI interface.

The GNSS industrial market is expected to grow to 67 per cent in annual shipments to 43 million devices. The road segment dominates the annual quantity consuming about 98 per cent of the total shipments. The road segment's growth is driven by increased regulatory pressure for e911 emergency location calls.

"From a capabilities standpoint, the EXG0201 provides excellent performance with 28MHz of signal bandwidth, dual channel operation, 60dB of instantaneous dynamic range, and 75dB of gain, all contained within a small 72pin QFN package," said Irshad Rasheed, director of marketing for Wireless and RF Products at GigOptix.

EXG0201 engineering sample devices are available now and the EXG0201 is expected to ship in full production quantities starting in the fourth quarter of fiscal 2014.




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