| Summary: | 碩士 === 景文科技大學 === 電子工程系電腦與通訊碩士班 === 105 === In general, the bandwidth utilization of Patch antenna is 2 ~ 3%, and the bandwidth of Wi-Fi802.11 ac is 675MHz, in order to use the bandwidth of IEEE802.11ac, this paper proposes to increase the radiation surface of Patch antenna the height of the ground plane to increase the bandwidth, and the height of the coupling between the components to change the current distribution; by the current distribution effect to change the beam width, from the simulation results of the beam width can be increased by 11 to 40%, the beam width of the relative increase in the coverage of the transmission will be more widely.
In this paper, because of the effect of the coupling element so that the entire impedance characteristics of the inductive, adjust the S11, whether it is microstrip edge feed or copper axis bottom feed, the radiation area can be reduced by 17 ~ 50%, if the coaxial line bottom feeding mode, but also increase the use of bandwidth of 25%; by 3D full-wave darkroom actual measurement results beam width can be increased by 11 ~38%, radiation area can be reduced by about 37%, the actual measurement results are consistent with the results of the simulation.
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