| 1. |
- Lindgren, Tore, et al.
(författare)
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Study of cluster of hard horns feeding an offset multi-beam reflector antenna for dual band operation at 20/30 GHz
- 2004
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Ingår i: 2004 digest. - Piscataway, NJ : IEEE Communications Society. - 0780383028 ; , s. 3015-3018
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Konferensbidrag (refereegranskat)abstract
- The study of a multibeam reflector antenna system with hard horn feeds is extended to include the defocusing effects encountered in the actual cluster. This is done by using the ARECIBO code, a reflector program for analysis of multi-reflector antennas. There are many different analysis models for offset reflectors implemented in ARECIBO. The one used for the present study is aperture integration after Fourier series expansion of the aperture field. This is fast and accurate within main beam and first sidelobes, but it is of course slow compared to the BOR model.
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| 2. |
- Lindmark, Björn
(författare)
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Capacity of a 2x2 MIMO antenna system with mutual coupling losses
- 2004
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Ingår i: IEEE ANTENNAS AND PROPAGATION SOCIETY SYMPOSIUM, VOLS 1-4 2004, DIGEST. - : IEEE. - 0780383028 ; , s. 1720-1723
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Konferensbidrag (refereegranskat)abstract
- The capacity of Multiple-Input Multiple-Output (MIMO) systems is strongly dependent on the channel matrix which in turn can be expressed in integrals over the antenna far-0 eld patterns. In this paper the effect of mutual coupling on the capacity of a 2 x 2 MIMO system is studied. The results show that even though the correlation is reduced the losses caused by mutual coupling decrease the capacity as we reduce the antenna spacing.
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| 3. |
- Steyskal, Hans, et al.
(författare)
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Spiral element for wide-band phased arrays
- 2004
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Ingår i: IEEE ANTENNAS AND PROPAGATION SOCIETY SYMPOSIUM, VOLS 1-4 2004, DIGEST. - NEW YORK : IEEE. - 0780383028 ; , s. 3976-3979
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Konferensbidrag (refereegranskat)
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