WIDE BAND FERRIMAGNETIC LIMITER STUDY.
Abstract
The relationship between the low K-spin wave region, the limits of the Walker Mode spectrum, gyromagnetic resonance, and the availability of first order process limiting is reviewed and presented in a normalized graphical form. With the uniform precession biased first in the coincidence, and then the subsidiary resonance absorption region, close agreement is shown between the predicted and experimentally determined bottom of the spin wave manifold, as determined by the availability of spin waves for first order process limiting. Leading spike phenomenon was observed over an octave band. Efforts to increase the dynamic range are discussed utilizing various transmission line structures. A novel type of electronically tunable bandpass filter is discussed in which there is a series resonance between the parallel RLC circuit of a ferrite resonator and a lumped reactance. Experiments in P-band indicate that, except for the increased losses and decreased coupling due to high linewidth and low 4 pi M sub s, an octave band all pass filter can be constructed. X-band experiments indicate that the main problems in building an octave band all pass filter are excessive cable losses and tracking problems. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1967
- Accession Number
- AD0652246
Entities
People
- A. Christopher
- J. Moyse