Research Article
Design and Implementation of Single-Layer 4 × 4 and 8 × 8 Butler Matrices for Multibeam Antenna Arrays
Table 2
Output phases, phase progressions
, and beam directions
of the 8 × 8 BM.
| | Input port/beam | Output phase (deg) | (deg) | (deg) | | Port 9 | Port 10 | Port 11 | Port 12 | Port 13 | Port 14 | Port 15 | Port 16 |
| | 1 | -112.5 | 45 | -157.5 | 0 | 157.5 | -45 | 112.5 | -90 | 157.5 | 29 | | 2 | -112.5 | 0 | 112.5 | -135 | -22.5 | 90 | -157.5 | -45 | 112.5 | 51.3 | | 3 | -135 | -67.5 | 0 | 67.5 | 135 | -157.5 | -90 | -22.5 | 67.5 | 68 | | 4 | -180 | -157.5 | -135 | -112.5 | -90 | -67.5 | -45 | -22.5 | 22.5 | 82.8 | | 5 | -22.5 | -45 | -67.5 | -90 | -112.5 | -135 | -157.5 | -180 | -22.5 | 97.2 | | 6 | -22.5 | -90 | -157.5 | 135 | 67.5 | 0 | -67.5 | -135 | -67.5 | 112 | | 7 | -45 | -157.5 | 90 | -22.5 | -135 | 112.5 | 0 | -112.5 | -112.5 | 128.7 | | 8 | -90 | 112.5 | -45 | 157.5 | 0 | -157.5 | 45 | -112.5 | -157.5 | 151 |
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