Wideband U-slot microstrip patch antenna array

Wideband U-slot microstrip patch antenna array

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The design and measured results of a wideband antenna array of four U-slot rectangular patches are presented. The U-slot patches are proximity coupled by a microstrip feed line terminating with novel Π-shaped stubs. By using a foam layer of thickness t ~ 5.5 mm as the supporting substrate, an impedance bandwidth (SWR ≤ 2) of 27% ranging from 3.4 GHz to 4.5 GHz is achieved. It has an average gain of 13 dBi and a cross-polarisation of less than –20 dB.


    1. 1)
      • C.L. Mak , K.M. Luk , K.F. Lee . Proximity-coupled U-slot patch antenna. Electron. Lett. , 8 , 715 - 716
    2. 2)
      • K.F. Lee , K.M. Luk , K.F. Tong , S.M. Shum , T. Huynh , R.Q. Lee . Experimental and simulation studies of the coaxially fed U-slot rectangularpatch antenna. IEE Proc., Microw. Antennas Propag. , 5 , 354 - 358

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