Artificial magnetic conductor with self‐complementary unit cells having very high angular stability

This Letter presents an artificial magnetic conductor (AMC) with self‐complementary unit cells (SCUCs). The use of SCUCs results in very high angular stability of the structure; up to an incident angle of 88° for both transverse electric and transverse magnetic polarised incident waves with no shift in resonant frequency f 0 . No other structure in the literature has zero frequency shifts throughout the whole range of incident angle variations. Another interesting feature of this structure is the gradual increase of the ±90° reflection phase bandwidth with an increase in E‐field polarisation angle from φ = 0° to φ = 90° while maintaining the same f 0 . These two features make the structure unique and useful in applications where angular stability and polarisation independent f 0 are the primary concerns.