A CMOS Real-Time Spectrum Sensor Based on Phasers for Cognitive Radios Academic Article uri icon

abstract

  • © 1963-2012 IEEE. Real-time spectrum sensing refers to searching for possible signals at a specific time and location, which is applicable to cognitive radio for primary signal detection. The simplicity and low sensing time of phaser-based spectrum sensors, implemented in a discrete manner previously, provided the incentive for this paper. In this paper, an integrated CMOS wideband real-time spectrum sensor with a novel on-chip phaser in 57-354-MHz band, as part of VHF/UHF TV broadcast bands, is presented. The proposed approach provides a fast, simple, area-efficient analog solution for real-time spectrum sensing with low noise figure and power consumption. The integrated chip has been fabricated in a standard 0.18-mu ext{m} CMOS IBM technology and has achieved a sensing time of as low as 2.5 mu ext{s} for 27-MHz frequency resolution.

author list (cited authors)

  • Sepidband, P., & Entesari, K.

citation count

  • 5

publication date

  • November 2017