CST – Computer Simulation Technology

Microstrip Antenna Phased Array With Electromagnetic Bandgap Substrate
Zeev Iluz, Reuven Shavit, Reuven Bauer
IEEE Transactions on Antennas and Propagation
Vol. 52, No. 6, June 2004
1446 - 1453
Electromagnetic bandgap (EBG), microstrip antenna phased array, mutual coupling, uniplanar compact electromagnetic bandgap (UC-EBG) geometry
Uniplanar compact electromagnetic bandgap (UC-EBG) substrate has been proven to be an effective measuremto reduce surface wave excitation in printed antenna geometries. This paper investigates the performance of a microstrip antenna phased array embedded in an UC-EBG substrate. The results show a reduction in mutual coupling between elements and provide a possible solution to the “blind spots” problem in phased array applications with printed elements. A novel and efficient UC-EBG array configuration is proposed. A probe fed patch antenna phased array of 7 5 elements on a high dielectric constant substrate was designed, built and tested. Simulation and measurement results show improvement in the active return loss and active pattern of the array center element. The tradeoffs used to obtain optimum performance are discussed.

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