Picosecond Optoelectronic Measurement of Microstrip Dispersion.
Abstract
Very short electrical pulses can be produced by optically triggering optoelectronic switches incorporated into microstrip transmission lines. However, microstrip dispersion causes short electrical pulses to broaden and distort as they propagate. Conventional continuous-wave (cw) dispersion measurements on microstrip have been limited to 18-GHz bandwidth. Here we report optoelectronic generation and sampling of electrical pulses with 5-psec temporal resolution and the use of these pulses to probe dispersion effects of the high-frequency microstrip propagation modes. Theoretical calculations of the dispersed pulse shapes were performed by Whinnery and coworkers; our results confirm their predictions. Fourier analysis of the dispersed pulse shapes yields the microstrip dispersion curve to about 150 GHz. The measured curve is much less dispersive than an approximate analytical dispersion curve, which may be due to the small dimensions of the microstrips used.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 30, 1985
- Accession Number
- ADA161980
Entities
People
- D. E. Cooper
Organizations
- The Aerospace Corporation