کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1867102 | 1038167 | 2012 | 5 صفحه PDF | دانلود رایگان |
Composite right/left-handed transmission lines with lumped element series capacitors and shunt inductors are used to experimentally realize the one-dimensional photonic crystals composed of single-negative metamaterials. The simulated and experimental results show that a special photonic band gap corresponding to zero-effective-phase (zero-φeffφeff) may appear in the microwave regime. In contrast to the Bragg gap, by changing the length ratio of the two component materials, the width and depth of the zero-φeffφeff gap can be conveniently adjusted while keeping the center frequency constant. Furthermore, the zero-φeffφeff gap vanishes when both the phase-matching and impedance-matching conditions are satisfied simultaneously. These transmission line structures provide a good way for realizing microwave devices based on the zero-φeffφeff gap.
► 1D photonic crystals with metamaterials were investigated experimentally.
► Both Bragg gap and zero-φeffφeff gap were observed in the microwave regime.
► The width and depth of the zero-φeffφeff gap were experimentally adjusted.
► Zero-φeffφeff gap was observed to be close when two match conditions were satisfied.
Journal: Physics Letters A - Volume 376, Issue 16, 19 March 2012, Pages 1396–1400