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Träfflista för sökning "WFRF:(Orlenius Charlie 1976) "

Sökning: WFRF:(Orlenius Charlie 1976)

  • Resultat 1-10 av 79
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1.
  • Aijaz, N., et al. (författare)
  • Active throughput measurements for complete MIMO WLAN systems using dual reverberation chamber technique
  • 2010
  • Ingår i: 2010 International Workshop on Antenna Technology (iWAT 2010), 1-3 March 2010, Lisbon, Portugal. - 9781424448838
  • Konferensbidrag (refereegranskat)abstract
    • A reliable, repeatable and fast measurement procedure for a complete Multiple-Input-Multiple-Output (MIMO) Wireless Local Area Network (WLAN) system is presented. Application level throughput is presented as a performance metric to reflect the actual throughput delivered to the end user by a WLAN system. The employed technique involves the use of two reverberation chambers to cope with the real world scenario of low Signal to Noise Ratio (SNR) proximity and to effectively control the rank of a communication channel.
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2.
  • Al-Rawi, Ali, 1985, et al. (författare)
  • A new compact wideband MIMO antenna – the double-sided tapered self-grounded monopole array
  • 2014
  • Ingår i: IEEE Transactions on Antennas and Propagation. - 0018-926X .- 1558-2221. ; 62:6, s. 3365 - 3369
  • Tidskriftsartikel (refereegranskat)abstract
    • We present a new compact wideband multiple input multiple output (MIMO) antenna—the double-sided 4-port arm-tapered self-grounded monopole array, briefly referred to as the butterfly antenna, in the communication. The antenna is very compact with low correlation between ports and high diversity gain. The genetic algorithm optimization scheme has been employed in the design. Simulation results have been verified against measurements. The measured reflection coefficients at all ports are below -7 dB over 0.5–9 GHz and below -4.5 dB over 0.4–0.5 GHz and 9–15 GHz. The measured correlation coefficients are below 0.4 over 0.4–15 GHz and lower than 0.1 in most of the frequency band. This new MIMO antenna is developed as a transmit antenna in reverberation chambers, and we believe that it will find more applications in other systems, such as micro base station antennas in wireless communication systems.
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3.
  • Al-Rawi, Ali, 1985, et al. (författare)
  • MULTI-PORT BOWTIE ANTENNA
  • 2013
  • Annan publikation (övrigt vetenskapligt/konstnärligt)
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4.
  • Al-Rawi, Ali, 1985, et al. (författare)
  • The Double-sided 4-port Bow-tie Antenna: A New Compact Wideband MIMO Antenna
  • 2013
  • Ingår i: 7th European Conference on Antennas and Propagation, EuCAP 2013, Gothenburg, Sweden, 8-12 April 2013. - 2164-3342. - 9788890701832 ; , s. 3731-3735
  • Konferensbidrag (refereegranskat)abstract
    • We present a new compact ultra-wideband 4-port antenna for use in MIMO systems, such as in reverberation chambers for OTA measurements. The new antenna is based on the self-grounded bow-tie antenna with a very compact size. The design was done through an optimization by employing the genetic algorithm in order to obtain low reflection coefficient and mutual coupling between ports. The designed antenna has an embedded radiation efficiency higher than -0.35 dB, reflection coefficient below -7 dB, mutual coupling between ports below - 12.5 dB (in most frequencies below -20 dB), over a frequency range of 0.4–15 GHz.
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  • Resultat 1-10 av 79

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