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Sökning: LAR1:lu > Sjöberg Daniel > Lunds universitet

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  • Bondarik, Alexander, et al. (författare)
  • 60 GHz Microstrip Antenna Array on PTFE Substrate
  • 2012
  • Ingår i: 6th European Conference on Antennas and Propagation (EUCAP), 2012. - IEEE--Institute of Electrical and Electronics Engineers Inc.. - 978-1-4577-0918-0 ; s. 1016-1018
  • Konferensbidrag (refereegranskat)abstract
    • A microstrip antenna array design for 60 GHz central frequency is presented, with simulated and measured results in good agreement. The antenna is fabricated on a flexible substrate and intended for integration with circuit module to form a wireless communication system.
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3.
  • Bondarik, Alexander, et al. (författare)
  • Gridded Parasitic Patch Stacked Microstrip Antenna With Beam Shift Capability for 60 GHz Band
  • 2014
  • Rapport (övrigt vetenskapligt)abstract
    • A microstrip antenna design is introduced in which a rectangular microstrip patch is coupled electromagnetically with a gridded rectangular patch placed above. The gridded patch consists of nine identical rectangular parts separated by a distance which is much smaller than a free space wavelength for a central frequency. The antenna is designed to operate in the 60 GHz band and is fabricated on a conventional PTFE (polytetrafluoroethylene) thin substrate. The antenna return loss bandwidth is comparable to a single parasitic patch aperture coupled antenna, while the proposed antenna gain is higher. Measurement results are in good agreement with simulation. Measured 10 dB return loss bandwidth is from 54 GHz up to 67 GHz. It fully covers the unlicensed band around 60 GHz. The measured antenna realized gain at 60 GHz is close to 8 dB, while the simulated antenna radiation efficiency is 85%. A simple beam shifting method is possible for this antenna structure by connecting adjacent outside parts in the gridded patch. The designed antenna is suitable for a high speed wireless communication system in particular for a user terminal in a fifth generation (5G) cellular network.
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  • Bondarik, Alexander, et al. (författare)
  • Microstrip antenna array integrated with 60 GHz band CMOS injection locked power amplifier
  • 2016
  • Ingår i: 2016 10th European Conference on Antennas and Propagation, EuCAP 2016. - Institute of Electrical and Electronics Engineers Inc..
  • Konferensbidrag (refereegranskat)abstract
    • A microstrip antenna integration with a power amplifier is presented for the 60 GHz band. The antenna is a single layer 4×4 square patches array. The power amplifier is injection locked, designed in a 65 nm CMOS technology, with single-ended input and output signals. The integration is realized by means of bond wire connections. The antenna and the power amplifier are fabricated, characterized and measured separately. The integrated design is fabricated and measured, results are de-embedded to extract the power amplifier parameters and to compare with separate device measurements. At 56.5 GHz the integrated sample has about 12 dB gain increase with respect to the antenna sample without power amplifier. The presented design is targeting 60 GHz band wireless communication system applications.
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8.
  • Bondarik, Alexander, et al. (författare)
  • Pattern Reconfigurable Wideband Stacked Microstrip Patch Antenna for 60 GHz Band
  • 2016
  • Ingår i: International Journal of Antennas and Propagation. - Hindawi Publishing Corporation. - 1687-5869. ; 2016
  • Tidskriftsartikel (refereegranskat)abstract
    • A beam shift method is presented for an aperture coupled stacked microstrip antenna with a gridded parasitic patch. The gridded parasitic patch is formed by nine close coupled identical rectangular microstrip patches. Each of these patches is resonant at the antenna central frequency. Using four switches connecting adjacent parasitic patches in the grid, it is possible to realize a pattern reconfigurable antenna with nine different beam directions in broadside, H-plane, E-plane, and diagonal planes. The switches are modeled by metal strips and different locations for strips are studied. As a result an increase in the antenna coverage is achieved. Measurement results for fabricated prototypes correspond very well to simulation results. The antenna is designed for 60 GHz central frequency and can be used in high speed wireless communication systems.
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