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Imec, Holst Centre detail 6-10GHz band sol'n

Posted: 14 Oct 2011 ?? ?Print Version ?Bookmark and Share

Keywords:ultra-wideband? wireless? positioning sensor?

Imec and Holst Centre have revealed an ultralow-power integrated solution that is fade-resilient and interference-free for the 6 to 10GHz range. According to them, the fully chip-integrated ultralow-power impulse-radio ultra-wideband (IR-UWB) delivers high-quality communication for mobile and sensing applications.

The R&D centers have made available UWB communications for battery-operated applications in the area of personal area networks and positioning sensors worldwide. Examples are short-range video or around-the-body audio streaming. When using UWB radio for wireless streaming of audio between smartphones and an earpiece, the battery lifespan will increase by more than three times compared to a conventional Bluetooth-based solution. The earpiece meanwhile will gain battery lifetime increases of about five times. In contrast to Bluetooth, the UWB radio will not suffer from interference from other wireless technologies that operate in the same location and frequency band.

IR-UWB is designed for short-range (20m) communication and positioning sensors. The large bandwidth improves the resilience against fades, resulting in superior communication reliability, unlike narrowband solutions which tend to lose signals in surroundings with reflective surfaces and multipath propagation. In addition, spreading information over a wide bandwidth decreases the power spectral density, thus reducing interference with other systems and lowering the probability of interception.


Imec and Holst Centre's fully chip-integrated ultralow-power IR-UWB (impulse-radio ultra-wideband) solution

Imec and Holst Centre's solution consists of a transmitter, receiver front-end and receiver digital baseband. The transmitter delivers 13dBm peak power, with an average power consumption of 3.3mW. The receiver front-end shows -88dBm sensitivity at 1Mbit/s. A digital synchronization algorithm enables real-time duty cycling, resulting in a mean power consumption of 3mW. A DCO with 100ppm frequency accuracy and baseband frequency tracking algorithm ensure the coherent reception. A 75dB link budget with a data rate of 1Mbit/s is achieved.

Companies can have access to this technology by joining Imec and Holst Centre's R&D program on ultra-low power wireless systems.

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