Multifrequency multiband antenna having photonic band gap material with single periodicity defect band gap producing several narrow bandwidths and excitation mechanism producing electromagnetic transmitter receiver

摘要

The multiband frequency antenna has a photonic band gap material (142) having a band gap and one singe periodicity defect (156) of the band gap material to produce several narrow bandwidths within a band gap. There is an excitation device (160,162) which transmits and receives electromagnetic waves within narrow bandwidths. The excitation mechanism can work simultaneously in two work bands.