A Novel Cross-band Frequency Reconfigurable Quasi-planar Yagi Antenna

In the paper, a novel cross-band frequency configuration plane quasi-Yagi antenna is proposed, and the reconfigurable frequencies are in C-band and KU-band respectively. The frequency reconstruction is realized by using the PINs to change the length of the plane diople, and the antenna has a good orientation at two frequencies. For better directivity in two frequencies, the low-frequency director of the antenna is connected with the high-frequency director, and the length of the director is constructed by the PINs. The low frequency operating frequency of the antenna is 7.5GHz, and the gain is 6.2dBi. The high operating frequency is 14GHz, and the gain is 5.2dBi.