Ionospheric Research and Propagation Studies.
Abstract
A new wide band log periodic antenna feed is described which has improved impedance characteristics compared to older log periodic feeds. The feed is fed from the front with a coaxial cable which reaches the feed along the parabolic axis. Some data for the feed, and for the antenna with the new feed, are given. Moon reflected signals were received from July 10 to 21 and from August 7 to 10 on 150.6 mc, and on August 11 on 413.2 mc. The signals were received with the antenna polarization rotating. The nulls were calibrated in relative polarization angle and time, and plots of the polarization change are shown. One set of data was taken during the solar flare of July 11. The relative change of electron content was calculated from some of the data. A method of studying signals received by scattering is presented. This method makes use of the frequency of the signal received by scattering as compared to the moon reflected signal with the Doppler frequency subtracted out. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 30, 1961
- Accession Number
- AD0267852
Entities
People
- H.d. Webb
Organizations
- University of Illinois Urbana–Champaign