| Summary: | 博士 === 義守大學 === 電機工程學系 === 102 === This dissertation presents a series of design of active reconfigurable polarization microstrip antenna in wireless local area network. The proposed antennas are designed as the single feed structure with the microstrip circuit module. The circuit module consists of microstrip line, pass component and active component. The circuit module can be managed to control the surface current on radiator and function as the reconfigurable switching of circular polarization modes for the proposed antennas. First antenna design uses the capacitor to control the phase of microstrip line and being reached the dual circular polarization. Second antenna design and third antenna design can be switched the circular polarization modes by using of the PIN diodes and the perturbing structure. Fourth antenna design is the stack structure with dual circular polarization. In this dissertation, the advantages of the four antennas are the small size, the function as reconfigurable polarization and the dual circular polarization radiation. The proposed antennas can be improved the receiving quality of products and reduced the number of antennas on the system. Details of the antenna design are shown, and the simulated and measured results are also presented and discussed.
|
|---|
