HIGH-FIELD STUDY OF A HALL-EFFECT MICROWAVE CONVERTER
Abstract
A reentrant coaxial cavity was used to study the Hall-Effect converter. A disk-shaped InSb sample about .005 in. thick and .200 in. in diameter was mounted at the reentrant post. The reentrant gap was filled with another disk made of high dielectric constant material, such as rutile. The purpose of this disk was to concentrate the rf magnetic field near the sample so that coupling to the field could be achiev d efficiently. The input signal and pump were applied to the cavity through the coupling loop. The output rf signal, whose frequency is the difference of the signal frequency and the pump frequency, was derived through the Hall effect and fed to the coaxial line. The reentran cavity is characterized by a high rf field concentration near the post where the sample is mounted. The signal has an azimuthal magnetic field around the sample which is used to modulate the axial field Ez due to the pump. The resulting Hall field was produced radially in the sample. The rf field is expected to be nonuniform. An average uniform field was assumed. The experiments were performed mostly at 77 K. The cavity was vacuum sealed into a metallic container, cooled in a Dewar flask filled with liquid nitrogen. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 31, 1962
- Accession Number
- AD0285517
Entities
People
- K.k.n. Chang
- R.d. Hughes
Organizations
- RCA Corporation