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We present a precise nulling method for reducing excitation error in phased array antenna having several elements. In the phased arrays to form null in the antenna pattern, the null direction is shifted because of the excitation error (quantization error etc.). The proposed method can alleviate the effect of the excitation error by combining some quantized excitation weight. Computer simulation results...
Phased array antennas (PAA) enable to form a main beam in the direction of a desired signal and nulls in the direction of interference signals by adjusting excitation coefficient (amplitude and phase) of each antenna element. One method to form nulls in the direction of interference is sidelobe canceller [1]. The signals received by the auxiliary antennas are adjusted to be the conjugate of the interference...
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