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A Self-Steering Receiver Array Using Jointly Coupled Oscillators and Phased-Locked Loops.
- Source :
-
IEEE Transactions on Microwave Theory & Techniques . Mar2014, Vol. 62 Issue 3, p631-644. 14p. - Publication Year :
- 2014
-
Abstract
- This paper presents an analog circuit scheme to steer phased-array receivers in the direction of an incoming signal. The proposed circuit technique utilizes a coupled-oscillator array along with a coupled-phased-locked loop to auto-align an N-element receive array towards the direction of the incident RF signal. A four-element receiver array is implemented in 45-nm CMOS SOI process and achieves auto-steering range of \pm 35^\circ from broadside. A three-element version of the array demonstrates higher auto-steering angle covering \pm 70^\circ range. The receiver also performs signal demodulation for the incident modulated RF signal, allowing high-data rate communication. A 60-Mbps 64-QAM modulated RF signal is demodulated with error-vector-magnitude (EVM) less than 4% across the steering angle range. The chip area is 3.45 mm^2 including a pad frame with 30-mW/element power consumption. To the best of authors' knowledge, this is the first demonstration of an analog self-steering array in an integrated circuit. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00189480
- Volume :
- 62
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Microwave Theory & Techniques
- Publication Type :
- Academic Journal
- Accession number :
- 94842650
- Full Text :
- https://doi.org/10.1109/TMTT.2014.2300037