CST – Computer Simulation Technology

Experimental characterization of a 6.7 GHz coaxial Bragg reflector
Joaquim J. Barroso, Pedro J. Castro, Joaquim P. Leite Neto, Guilherme L. Pimentel
Review of Scientific Instruments
Volume: 78, Issue: 9, Sep 2007
A coaxial line periodically loaded by circular disks on the inner conductor is designed and constructed to act as Bragg reflector in the 4.0–9.5 GHz frequency range. This is achieved by placing 10 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. Experiments on a periodic structure made from stainless steel demonstrate a band gap of 5.6 GHz centered at the 6.7 GHz design frequency in close agreement with 3D microwave computer simulations.

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