Harmonics reduction with defected ground structure for a microstrip patch antenna

  title={Harmonics reduction with defected ground structure for a microstrip patch antenna},
  author={Y. J. Sung and Myeong-Jin Kim and Y. S. Kim},
  journal={IEEE Antennas and Wireless Propagation Letters},
A microstrip patch antenna using a defected ground structure (DGS) to suppress higher order harmonics is presented. An H-shaped defect on the ground plane with only one or more unit lattices has been utilized and yielded bandstop characteristics. Compared with a conventional microstrip patch antenna without the DGS unit cell, the radiated power of the DGS patch antenna at harmonic frequencies has been drastically decreased. 
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