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A dual-polarized microstrip antenna with low cross polarization level is designed, then a full-polarization conformal phased array with twelve elements on a cylinder is simulated. Based on the embedded patterns of each element, the convex optimization method is utilized to synthesis the array's radiation pattern. It has been proved that, the array with differential-fed elements performs 20dB better...
In this paper, a X-band broadband antenna array with 4-elements is designed and fabricated. Firstly, various methods, such as multi-resonant and slot-coupling, are applied hybridly to broaden the bandwidth of the ordinary microstrip antenna element. Simulation results show that VSWR<2 bandwidth of the proposed antenna is over 50%, with center frequency of 10GHz. Then, in order to achieve high gain,...
The mushroom-like electromagnetic band-gap (EBG) structure combined with a choke structure is applied to improve the transmit–receive (T/R) isolation of two X-band large antenna arrays. The basic idea presented is to suppress the surface wave propagation between the T/R arrays by utilizing EBG walls formed through a vertical configuration of the EBG cells, so as to improve the T/R isolation. The isolation...
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