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Träfflista för sökning "WFRF:(Fei Yuanyuan) srt2:(2006-2009)"

Sökning: WFRF:(Fei Yuanyuan) > (2006-2009)

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1.
  • Fei, Yuanyuan, et al. (författare)
  • Experiments of closely coupled monopoles with load matching in a random field
  • 2006
  • Ingår i: First European Conference on Antennas and Propagation EuCAP, 2006. - 9789290929376
  • Konferensbidrag (refereegranskat)abstract
    • Recent theoretical and simulation studies reveal that closely coupled antennas with appropriately chosen impedance matching loads can yield desired characteristics of small antenna correlation coefficients and/or high received power levels. However, no experiment has been performed to verify these claims. Here, we describe an experimental setup used to investigate the correlation and received power of closely coupled antennas with impedance matching. Specifically, a two-monopole array with a small antenna spacing 0.05 wavelength and five different matching networks are constructed and measured. Whereas our experimental results largely confirm theoretical predictions, some discrepancies due to simplifications made in the theoretical models are observed.
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2.
  • Fei, Yuanyuan, et al. (författare)
  • Optimal single-port matching impedance for capacity maximization in compact MIMO arrays
  • 2008
  • Ingår i: IEEE Transactions on Antennas and Propagation. - 0018-926X. ; 56:11, s. 3566-3575
  • Tidskriftsartikel (refereegranskat)abstract
    • A complete MIMO system model with compact arrays at both link ends containing arbitrary matching networks is presented based on a Z-parameter approach. The complete channel matrix including the coupling effect is also presented. Utilizing this system model, the optimum single-port matching impedance for capacity maximization is derived for a 2 × 2 MIMO system with coupling at the receivers only. A closed-form result for the optimum matching impedance in high signal-to-noise ratio scenarios is given and proved to be equal to the input impedance of the receive end. Simulation of ideal dipoles verifies our analytical results and demonstrates the superiority of the optimum matching to other matching conditions in improving MIMO system performance. Experimental data for monopoles is also presented to further confirm our numerical findings and validate the accuracy of our derivation.
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refereegranskat (2)
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Lau, Buon Kiong (2)
Thompson, John S. (2)
Fei, Yuanyuan (2)
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