Load Impedance Characteristics of TRAPATT Oscillators.
Abstract
A study was made of the impedance required to match the diode in a time-delay-triggered TRAPATT oscillator. The investigation includes both a theoretical analysis and an experimental verification. It provides the most accurate closed-form analysis of TRAPATT oscillator waveforms and efficiencies to date and resolves inconsistencies in the dynamics of the time-delay-triggering processes which have not been adequately explained in previously published analyses. A technique is given for determining the required diode matching impedance and presenting the impedance data in a single set of resistance and reactance curves valid for any fundamental frequency of oscillation. The analysis includes the parasitics of the package and mount and shows that the required matching impedance is strongly influenced by these parasitics; without them the chip itself would be a very broadband device. (Modified author abstract)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 09, 1973
- Accession Number
- AD0776773
Entities
People
- Jerry D. Welch
Organizations
- Massachusetts Institute of Technology