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Wide-angle beam steering using coupled-PLLs

Wide-angle beam steering using coupled-PLLs

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A coupled-PLLs network suitable for phased-array systems is presented. The proposed structure uses phase-frequency detectors, instead of analogue multipliers, to achieve up to ±180° phase shift between output signals. This improvement makes it possible to extend the scanning angle from ±30° off the normal achieved through current coupled-oscillators to ±90°.

References

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      • P.V. Brennan , A.W. Houghton . Phased-array control using phase-locked loop phase-shifters. IEE Proc. H, Microw. Antennas Propag. , 1 , 31 - 37
    6. 6)
    7. 7)
      • R.E. Best . (2003) Phase-locked loops design, simulation, and applications.
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