Propagation measurement using antenna array - Electronics Letters
نویسنده
چکیده
antenna are shown in Fig. 2. By carefully designing the matching network, very good impedance performance is obtained. The 2 1 VSWR is obtained from 3.9 to 6.YGHz. The bandwidth is 3GHz, or 55.6%. The measured axial ratio and gain of the proposed antenna are shown in Fig. 3. The results show that from 4.8 to 6.0GHz. less than 3dB axial ratio at boresieht for the forward direction (from the ground plane) is achievabi. The bandwidth is 1.2GHz or 22.2%. The gain is 4.510 IAdBic in the above frequency range. The meas& *dl ratio in the backward direction (from the opposite plane which includes the feed network) is 0.5 to l.OdB poorer because of the radiation of the feed network stripline.
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