Without battery-operated wireless transceiver device will come out

United Microelectronics Research Center (IMEC) at the recent International Solid State Circuits Conference reported a power consumption of only 51 micro-watt 2.4GHz (Ji Hezi) / 915 MHz (megahertz) since the alarm receiver. The minutes of low-power developed without Sony VGP-BPS8 Sony VGP-BPS8A battery or can be automatically capture energy opens the door to devices transceiver wireless technology can be widely used in the identification of long range radio frequency (RFID) and logistics, smart buildings and medical services used by the wireless sensor node.

Currently, the battery system of wireless communication in wireless devices do not send or receive data consumes much power, which means that most of the time, the Bluetooth phone or a wireless LAN when you do not work and also the battery access to energy. IMEC developed with ultra-low power consumption and fast response time of the receiver clock can be compared with the equipment transceiver traditional to send or receive data when you need to change. GD761 KD476

R & D based on double sampling of new wireless transmitter architecture can overcome the 1 / f noise, 1 / f noise will affect the majority of low-speed (10Kbps to 100kbps) devices transceiver wireless. Therefore, obtaining the same performance as the traditional principle that the device transceiver high data rates of devices has a higher budget power. Double sampling technique, 1 / f noise can be reduced, so that the receiver sensitivity can change with the data rate to increase proportionately. TD347 C1295

Self-clock receiver chip using 90 nanometer digital CMOS technology, the chip area of about 0.36 mm2. Measurements show, 915MHz 100kbps receptors (OOK) modulation of the sensitivity of-75dBm (signal to noise ratio greater than 12dB). When the data rate of 10Kbps and filter by business soundtrack, the sensitivity may increase 5dB. 2.4GHz receiver and 100kbps data rate of 10Kbps cases, the sensitivity of-64dBm, respectively, and-69dBm. PC764 Y9943

The researchers reported that research in autonomous systems, wireless sensor, the research objective is to develop energy can be made to the environment, instead of using cell systems of wireless sensors. For the digital signal processor, radios transceiver and sensors, power budget of the system of only 100 microwatts. Only 51 micro-watts of ultra-low-transceiver power wireless devices successfully developed towards achieving this goal has taken a major step, which is as long-range RFID, smart lighting, sensor tags and other applications not the battery, opening the door. 371785-001 417066-001