A HIGH-POWER WIDE-BAND WAFFLE-IRON FILTER
Abstract
The design and measured performance are described of an L-band model of a high-power wide-band lowpass waffle-iron filter. Three different waffleiron filters with staggered stop bands are connected in series to give a combined stop-band which extends from 2.2 gc to 13.7 gc where theATTENUATION IS 60 DB OR GREATER; THIS STOP-BAND INCLUDES THE SECOND THROUGH TENTH HARMONIC OF FREQUENCIES IN THE PASS-BAND OF 1.25 GC TO 1.35 GC. The waffle-iron filter attenuates all waveguide modes which can propagate at frequencies in the above stop-band. In the pass-band, the waffle-iron filters are matched to full-size L-band waveguide using quarter-wavelength stepped transformers. The pulsed power handling capacity without breakdown is measured to be 1.4 megawa ts peak power with air at atmospheric pressure filling the filter; the power capacity is measured using pulses 2 microseconds long and a repetition rate of 60 pulses per second. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1962
- Accession Number
- AD0278718
Entities
People
- Eugene Sharp
Organizations
- SRI International