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Tuning and widening of stop bands of microstrip photonic band gap ring structures
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View: Figures


Image of FIG. 1.
FIG. 1.

Image of the fabricated microstrip PBG ring on which a chip capacitor is mounted. The inner radius of ring , the ring line width , and the gap size are 6.25, 0.5, and , respectively.

Image of FIG. 2.
FIG. 2.

Transmission spectra of the fabricated microstrip PBG ring for various mounted capacitance and inductance values. The inset at the bottom left shows the schematic view of the tunable microstrip PBG ring.

Image of FIG. 3.
FIG. 3.

Dependence of attenuation pole frequency on the values of (upper side) and (bottom side). The inset in the lower part shows the equivalent circuit for the PBG ring structure. Note that increases (decrease) the attenuation pole frequency because of the parallel connection of and to the circuit elements of the microstrip PBG ring. Notice the different frequency scale for the cases of and .

Image of FIG. 4.
FIG. 4.

Measured and simulated transmission spectra of the structure shown in the inset with the mean circumference , , and . Note that the structure exhibits a wide stop band with three attenuation poles.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Tuning and widening of stop bands of microstrip photonic band gap ring structures