HERO SUPPORTING STUDIES
Abstract
Two prototype low band pass transformers (LBT's) developed by Weston Instruments were examined to find the terminated power loss, at low frequency and low power. With a one-ohm termination both gave greater than 40 db power loss in the 20 Kc to 1 Mc frequency range. The losses at 1 and 10 Gc are determined, and appear to be greater than 40 db. At these two higher frequencies, 10 watts of power were applied, and the temperature rise over a 30 minute interval was noted. Temperatures do not exceed 100 C degrees for one unit, and 80 degrees C for the other. From these data, unit number 58 A appears more desirable. Power loss at 30 and 250 Mc are to be determined, and if input power can be raised to 5 or 10 watts we shall determine the temperature rise as well. On the basis of these data Weston will freeze their design, and prepare to develop final production models. These should be available for tests in early March at the latest. A theoretical development was initiated to substantiate the large losses indicated for a supposedly lossless line by the results obtained with the voltage min-max method of power measurement. This analysis supported the experimental results and once more indicated that low loss line can become quite lossy when large standing waves occur on it. In preparation for a high frequency evaluation of the protected MARK 7 MOD 0 ignition element we have investigated the voltage min-max power measuring technique adapted to waveguide.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 31, 1962
- Accession Number
- AD0403647
Entities
People
- Norman P. Faunce
- Paul F. Mohrbach
Organizations
- Franklin Institute