| Summary: | 碩士 === 國立臺北科技大學 === 電子工程系 === 106 === This study proposes a dielectric resonant antenna array. The dielectric resonator has many features, including high dielectric constant, high quality factor, low cost, and low temperature coefficient, which can shorten the resonant path wavelength to achieve the effect of miniaturizing the antenna. This paper is mainly divided into two parts. The first part is circuit design. The main design is power divider and voltage-controlled phase shifter. Both circuits are completed on FR4 board. The basic dielectric constant of FR4 board is 4.3, thickness is 0.8. mm, copper height 0.035 mm. The voltage-controlled phase shifter mainly uses a diode varactor to change the reflection coefficient and then reflect the signal to achieve the purpose of phase modulation, and the variable phase is 190 degrees. The second part is the antenna design, which mainly uses the microwave dielectric resonator combined with the microstrip line feed mode to design the antenna characteristics of the single dielectric resonator antenna element, and then uses two dielectric resonators to be arranged in series to form an antenna array. Finally, an antenna array of four elements is designed. A voltage-controlled phase shifter and a power divider are used to adjust the beam angle to the left and right by adjusting the different feeding phases.
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