Improvement of Noise Performance in Phased-Array Receivers
- Authors
- Kim, Junghyun; Jeong, Jinho; Jeon, Sanggeun
- Issue Date
- 4월-2011
- Publisher
- WILEY
- Keywords
- CMOS; noise figure; phased-array receiver; phase noise; RFIC; signal-to-noise ratio
- Citation
- ETRI JOURNAL, v.33, no.2, pp.176 - 183
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- ETRI JOURNAL
- Volume
- 33
- Number
- 2
- Start Page
- 176
- End Page
- 183
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/112699
- DOI
- 10.4218/etrij.11.0110.0440
- ISSN
- 1225-6463
- Abstract
- This paper presents a new analytical approach and experimental verification for the improvement of noise performance in phased-array receivers. For analysis purposes, a multi-channel array system is converted into an equivalent single-channel system, such that the two presents the identical signal and noise powers at the output, respectively. We define an effective gain, noise figure, and signal-to-noise ratio in the equivalent system. Through the proposed approach, the noise performance of the array receiver is analyzed in a general and straightforward manner and then compared to that of each individual array channel. In addition, the phase noise of the array system is analyzed in a rigorous manner, showing its effective reduction by a factor of the array size. The predicted improvement of the noise performance is experimentally confirmed with a CMOS integrated phased-array receiver.
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