MESFET Grid Oscillators - Injection-Locking, Power Design and Modulation.
Abstract
A pc-based program was developed for design-oriented analysis of grid oscillator power combiners. The program was also extended to analysis of arbitrary cascaded quasi-optical active and/or passive components. Validation on passive unloaded gratings, passive loaded gratings and active gratings has been carried out and analysis agrees with measurements favorably. Grid oscillators designed using this theory have been implemented as sources in a two-level power-combining system consisting of a grid oscillator source and a lens amplifier combiner. Lens amplifier can provide power gain with good feed efficiency, as well as beam-steering, beam forming and beam switching capabilities. Grid oscillators were also extended to a I three-dimensional power combining source with power-combining efficiencies above 70%. Injection-locking properties of grid oscillators were studied, and it was established that these components work well as self-oscillating harmonic and subharmonic mixers. I This enables receivers which use quasi-optical components and do not require a separate LO. The heat dissipation in 2-D arrays was addressed by developing a high- efficiency amplifier array with 2.4W at 64% power-added efficiency at 5GHz. (AN)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 31, 1995
- Accession Number
- ADA303878
Entities
People
- Zoya B. Popovic
Organizations
- University of Colorado Boulder