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FIELD TEST AND EVALUATION OF A HELIX OPEN PERIODIC FILTER
ROME AIR DEVELOPMENT CENTER GRIFFISS AFB NY
The test results and evaluation of a feasibility model of a helix open periodic filter are presented. Analysis of the data indicates an infinitely wide stop band with a minimum attenuation of 50 db and observed rejections as high as 70 db. Pass band data indicates a loss of less than 0.4 db and a VSWR of less than 1.61 across most of the pass band. The filter was capable of accommodating the full output power minimum of 2 MW of the ANFPS- 65 at all frequencies. The filter tested demonstrated the feasibility of using open periodic structures for high power microwave filtering and their advantages over currently used techniques.
See also AD0608661. DOI: 10.21236/AD0610840
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