Study on effect of rectangular DMS and DGS on 4 and 8 elements rectangular microstrip linear array antenna

in this experimental study a novel design has been developed to improve the antenna parameters in terms of impedance bandwidth and radiation properties. a 4-element rectangular array antenna (refereed as antenna 1) operating in the range of 10 to 16 ghz with multi bands is used as a reference antenna. the impedance bandwidth and other radiation properties have been enhanced by using defected microstrip structure (dms) and defected ground structure (dgs). this study is further extended to 8-element array. the design consideration and experimental results of the proposed antennas are presented and discussed.