Analysis, design, and experimental verification of microwave filters for safety issues in open-ended waveguide systems

Safety issues must be seriously considered in the practical implementation of microwave industrial systems with open ports. To preserve the radiation of these open-ended waveguide systems into permissible levels, bandstop microwave filters are widely used. In this paper, the accurate analysis, design, and experimental verification procedure of such filters are extensively studied. A singly and a doubly corrugated filter for continuous flow microwave industrial systems are designed. Two prototypes of such devices have been manufactured and experimentally verified.

[1]  Mauro Mongiardo,et al.  E-plane steps in rectangular waveguide , 1991 .

[2]  E. Grant,et al.  Microwaves: Industrial, Scientific, and Medical Applications , 1992 .

[3]  Paolo Arcioni.  Fast evaluation of modal coupling coefficients of waveguide step discontinuities , 1996 .

[4]  E. Paleczny,et al.  Multimode TRL. A new concept in microwave measurements: theory and experimental verification , 1998 .

[5]  G. Gerini,et al.  An efficient inversion technique for banded linear systems , 1997, 1997 IEEE MTT-S International Microwave Symposium Digest.

[6]  Sorin Tibuleac,et al.  Experimental verification of waveguide-mode resonant transmission filters , 1999 .

[7]  A. C. Metaxas,et al.  Industrial Microwave Heating , 1988 .

[8]  E. M. Jones,et al.  Microwave Filters, Impedance-Matching Networks, and Coupling Structures , 1980 .

[9]  Alejandro Álvarez Melcón,et al.  New simple procedure for the computation of the multimode admittance or impedance matrix of planar waveguide junctions , 1996 .

[10]  Marco Bressan,et al.  Waveguide Modes Via an Integral Equation Leading to a Linear Matrix Eigenvalue Problem , 1984 .

[11]  Leo Young,et al.  New and improved types of waffle-iron filters , 1963 .

[12]  Nathan Marcuvitz.  Waveguide Handbook , 1951 .

[13]  Vicente E. Boria,et al.  Accelerated computation of admittance parameters for planar waveguide junctions , 1997 .

[14]  A. L. VanKoughnett,et al.  Doubly Corrugated Chokes For Microwave Heating Systems , 1973 .

[15]  R. Collin.  Foundations for microwave engineering , 1966 .