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Design and Test of a 6.7-GHz Coaxial Bragg Reflector

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4 Author(s)
Barroso, J.J. ; Nat. Inst. for Space Res. (INPE), Campos ; Castro, P.J. ; Neto, J.P.L. ; Pimentel, G.L.

A coaxial line periodically loaded by circular disks on the inner conductor is designed and constructed to act as a Bragg reflector in the 4.0-10.0-GHz frequency range. This is achieved by placing ten disks (0.35 cm thick and 6.22 cm in diameter) equally spaced by the periodic distance of 1.8 cm on a coaxial waveguide with inner and outer diameters of 6.90 and 4.22 cm, respectively. Analytical discussion and 2- and 3-D computer simulations demonstrate a bandgap of 5.6 GHz centered at the 6.7-GHz design frequency in close agreement with experiments on a periodic structure made from stainless steel.

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Plasma Science, IEEE Transactions on  (Volume:36 ,  Issue: 2 )