A RECONFIGURABLE CAVITY BACKED ANTENNA FOR CIRCULAR POLARIZATION DIVERSITY

作者：Luo Guo Qing^*; Sun Ling Ling

来源：Microwave and Optical Technology Letters, 2009, 51(6): 1491-1493.

DOI：10.1002/mop.24393

• cavity backed antenna
• circular polarization diversity
• shorting posts
• diodes
• bias circuit

This letter describes the concept and realization of a low-profile substrate integrated waveguide (SIW) cavity backed antenna with circular polarization diversity. Four shorting posts are placed at the extended center lines of the crossed-slot. Diodes art, utilized to switch the shorting posts on and off. A simple bias circuit is presented to electronically control biased states of the diodes. BY switching the biased states the proposed antenna can generate either a right-hand circularly polarized (RHCP) or a left-hand circularly polarized (LHCP) radiation. Samples operating at 10 GHz have been fabricated. Experiments have been carried out to validate the proposed method.

• 出版日期2009-6
• 单位杭州电子科技大学