A HIGH-POWER S-BAND WAFFLE-IRON FILTER
Abstract
A description is presented of the design and measured performance of a high-power S-band waffle-iron filter that has a wide, well-matched pass-band with low insertion loss and a wide high-attenuation stop-band free of spurious responses. The high-power waffle-iron filter, fabricated of OFHC copper, consists of 2 pairs of identical parts that can be relatively easily machined. The filter is matched to standard S-band waveguide with stepped transformers. The principal means used to enhance the power-handling capacity of the high-power filter beyond that of the low-power prototype filter are described. The maximum VSWR in the 2.7-4.1 kmc pass-band of the filter is 1.6, and the minimum insertion loss of the 5.3-12.4 kmc stop-band is 45 db. The high-power waffle-iron filter had a power-handling capacity of 2.09 megawatt of peak power without breakdown when the waveguide was pressurized to 30 psi (gage). Preliminary measurements on the filter indicated that it could transmit at least 4.5 megawatts of peak power. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1961
- Accession Number
- AD0261891
Entities
People
- E.m.t. Jones
- H. Guthart
Organizations
- SRI International