| Summary: | 碩士 === 元智大學 === 通訊工程學系 === 105 === The research in this thesis is separated into two parts: the design of Vivaldi antenna for 4-G Base Transceiver Station application and compact antenna test range (CATR) feed antenna design
At present, most of the antennas in the base station are built using dipole antenna arrays, but the beamwidth of dipole antenna is very narrow. That is the reason why I choose the Vivaldi Antenna instead of dipole antenna to complete the design. The first part of this thesis will mainly focus on the design and characteristics of the high-frequency and low-frequency Vivaldi antenna along with its simulation and measurement results.
In the second part, the design of CATR feed antenna will be discussed. In the future, there will be more and more mobile devices using mmWave as the communication band. As the physical sizes of the devices are fixed, the distance required for the antenna measurement will be much longer than before while choosing the mmWave as the operation frequency. However, most of the antenna measurement laboratory cannot handle this kind of measurements. Therefore, CATR will be the mainstream of antenna measurements for mmWaves. Thus, the design of the feed antenna used for the CATR system is presented in this thesis.
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