Variable Permittivity Liquid Phase Shifters.
Abstract
The report describes the continuing work done to improve the performance of microwave phase shifters based on the concept of electrically controllable liquid artificial dielectrics using metallic suspensions of asymmetric metal particles. Methods for producing permanent, sub-micron metal particle suspensions were experimentally considered including ball milling, mercury cathode reduction and electric arc pulverization. Stable suspensions of spheroidal particles were made in quantity using the electric arc method with a hydrophobic, protective surfactant. However, the objective of making the required highly asymmetric particles in the size range 200-800A was not met. The use of a pair of reset electrodes in the waveguide Ku-band phase shifter demonstrated that reset times can be at least decreased to 1/5 of the rotational relaxation time.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1976
- Accession Number
- ADA033396
Entities
People
- William Bottenberg
Organizations
- General Dynamics