The impedance and pattern bandwidth of an array of dielectric resonator antennas series fed by a microstrip line was significantly improved by replacing individual DRAs with paired DRAs. The DRAs in each pair are spaced slightly >/spl lambda//sub g//4 apart so that their input reflections cancel. An array of eight DRA pairs was designed and fabricated, and its performance was compared to an array of eight single elements. The 10 dB return loss bandwidth improved from 2 to 18% and the 3 dB gain pattern bandwidth improved from 12 to 17%.
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机译：通过用成对的DRA代替单个DRA，显着提高了微带线馈电的电介质谐振器天线系列阵列的阻抗和方向图带宽。每对中的DRA间隔> / spl lambda // sub g // 4，以便它们的输入反射抵消。设计并制造了八对DRA阵列，并将其性能与八对单个元件的阵列进行了比较。 10 dB的回波损耗带宽从2％提高到18％，而3 dB的增益方向图带宽从12％提高到17％。
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