A NOVEL POLARIZATION RECONFIGURABLE RING-SLOT ANTENNA WITH FREQUENCY AGILITY

作者：Zhao Yu Long^*; Jiao Yong Chang; Zhao Gang; Weng Zi Bin; Zhang Fu Shun

来源：Microwave and Optical Technology Letters, 2009, 51(2): 540-543.

DOI：10.1002/mop.24064

• reconfigurable antenna
• polarization diversity
• circularly polarization
• frequency agility
• simple structure

A novel reconfigurable ring-slot antenna with switch-able polarization and frequency agility is presented. Circular polarization (CP) radiation of the proposed antenna is achieved by introducing proper asymmetry in the ring-slot structure and feeding the ring slot using a microstrip line at 45 degrees from the introduced asymmetry. Two diodes are used to reconfigure the structure of the ring slot. Switching between right-hand and left-hand CP is achieved by turning the diodes on or off and the two CP modes are operated at different frequencies. Moreover, the antenna has a simple structure, which is easier to be fabricated. An antenna prototype is implemented and the measured results are shown.

• 出版日期2009-2
• 单位西安电子科技大学