Ultra-low Power Receivers for Wireless Sensor Networks
Author | : James S. Ayers |
Publisher | : |
Total Pages | : 194 |
Release | : 2010 |
ISBN-10 | : OCLC:624343435 |
ISBN-13 | : |
Rating | : 4/5 ( Downloads) |
Download or read book Ultra-low Power Receivers for Wireless Sensor Networks written by James S. Ayers and published by . This book was released on 2010 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: In wireless sensor network applications, low-power operation of the wireless receiver is critical. To address this need an ultra-low power Binary Frequency Shift Keying (BFSK) receiver using the super-regenerative architecture is developed. A prototype receiver is built and tested for operation in the 900 MHz ISM band. Lab measurements show power consumption as low as 244 [mu]W with a sensitivity of -84 dBm while operating at 250 kbps. A second test chip designed to operate at 2.4 GHz improves on the previous design by adding full digital control and calibration. The 2.4 GHz receiver consumes 215 [mu]W while operating at 250 kbps and shows a 12 dB improvement in sensitivity over the original design. The entire receiver has an energy consumption of only 0.175 nJ/b while operating at 2 Mbps.