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Abstract-A wide-beam antenna and a planar phased array with wide-angle scanning performance based on image theory are proposed. To solve the wide-angle scanning problem, a summative evaluation of basic types of carrier-based antennas is given and the antenna types available for wide-angle scanning arrays or end-fire arrays are pointed out. Afterwards, a wide-angle scanning array with an artificial magnetic conductor (AMC) ground is proposed. The main beam direction of the array can scan from -89° to 90° in the H plane with a gain fluctuation less than 3 dB and the scanning 3 dB beam-width can cover a range from -105° to 105°. An excellent wide-angle scanning performance from the broadside direction to the end-fire direction can be obtained by the proposed method, which can be used to guide the design of wide-angle scanning arrays.Index Terms-Artificial magnetic conductor (AMC), image theory, planar phased array, wide-angle scanning.

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