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Deeply depleted channel technology to improve operational efficiency of portable communication devices

by Rus Abz 2011-12-09 15:07

Weather alert GPS enabled systemDeeply depleted channel technology applied to portable communicator devices microchips has demonstrated power saving capabilities. The newer memory and processor integrated circuit design utilizing the deeply depleted channel  transistors allows to cut power consumption of the portable devices in half. Both operating voltage and consumed current are dramatically lower releasing more power of the battery to other components of the personal GPS navigator devices such as the integrated weather alert radio circuitry and transmitter radio circuitry. By replacing conventional mosfets with Deeply depleted channel transistors in an existing memory and processor circuits design, while using the same mask set, nominal operating voltage dropped almost thirty percent, and power consumption fifty percent. The deeply depleted channel technology, allows the distribution of transistor threshold voltages across a chip to be tightened significantly, without moving away from standard bulk-silicon wafer based techniques.

NOAA weather radio GPS navigator RinoSeveral chip manufacturers have licensed the new technology allowing them to make microchips more energy-efficient for GPS navigators, tablets and smartphones to stay charged longer. The power saving features can actually make the integrated circuit chip performance better at the same battery life of the personal assistant or communicator device, or the battery life could be extended in case the processor and memory speed is sufficient to perform major tasks at fraction of their potential. Allowing for higher performance is important for handheld devices such as personal GPS navigators which are capable of performing as National Oceanic and Atmospheric Administration Weather Alert Radios. The radio transmitter can consume a major percentage of the battery power capacity in an emergency mode to reach to other radio receivers as far as ten to fifteen miles. The new generation of universal GPS receivers with two way radio feature and embedded National Oceanic and Atmospheric Administration weather  radio become an immediate candidates to adopt new power saving technology. 

Currently the universal Personal Communicators such as Garmin Rino 530HCx are very capable handheld devices with waterproof case, embedded FRS GMRS radio plus high-sensitivity GPS navigator that has barometric altimeter micro miniature module which pinpoints your precise elevation, an electronic compass to tell you what direction you are headed even when you're standing still. Automatic routing and turn-by-turn directions with convenient alert tone system, a microSD card slot and brilliant color display compliment the base set of functionality turning the device in truly all in one outdoor adventurer guide. Most important for safety of the traveler, it also includes the NOAA weather radio, which boasts a whopping 5 watts of transmit power in GMRS radio mode, which lets the traveler contact others on the team from up to 14 miles away in direct line of sight. Rechargeable lithium-ion battery which currently provides up to 14 hours of outdoor use. That is where the power of the battery could be extended by applying the new Deeply depleted channel technology, so the emergency radio and transmitter could have more energy saved for communicating with other radios in severe weather conditions or emergency situations. 

GPS system with weather alert There other areas of integrated circuitry design where the Deeply depleted channel technology could be applied in the future generations of universal GPS navigator devices. The goal is to drastically reduce the amount of energy that turns into heat and is wasted as microchips processing digital and analog signals. Future generations of DDC technology applied to microchips supporting high-sensitivity GPS receivers, and amplifiers for most advanced quad helix antenna designs, could keep the performance high and reduce the power dissipation. The new generation of the cooler GPS navigators will be able to to reliably lock on satellites to locate most current  position quickly and precisely and maintain the GPS location even in heavy cover and deep canyons. More power will be available for radio communication sessions with any other conventional FRS GMRS radios. The traveler will always stay in touch with the rest of the team not only via radio communication channel but also by using a unique Position Reporting feature, currently available in Rino GPS to send its exact location to others in the group so that everyone with Rino in hand can see your position on the map page. Using Position Reporting also helps save power of the lithium-ion battery as the loudspeaker amplifier circuitry does not need to be activated. 



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