Accession Number:

ADP003890

Title:

A GaAs FET Microwave Refractometer for Tropospheric Studies,

Descriptive Note:

Corporate Author:

RUTHERFORD AND APPLETON LABS CHILTON (ENGLAND)

Personal Author(s):

• Yilmaz,U. M.
• Kennedy,G. R.
• Hall,M. P. M.

Report Date:

1984-02-01

Pagination or Media Count:

6.0

Abstract:

The paper describes a microwave refractometer designed to be used in studies of multipath propagation on line-of-sight microwave links, and studies of transhorizon ducting. The application of a GaAs FET amplifier in a feedback loop containing the sampling cavity has produced a lightweight and simple refractometer which has been tested and used in a light aircraft with on-board data processing. These various aspects are discussed in some detail, together with the background requirements and specification. Author

Descriptors:

• *ELECTROMAGNETIC WAVE PROPAGATION
• *TROPOSPHERIC SCATTER COMMUNICATIONS
• *REFRACTOMETERS
• MICROWAVE TRANSMISSION
• FIELD EFFECT TRANSISTORS
• GALLIUM ARSENIDES
• MULTIPATH TRANSMISSION
• REFRACTIVE INDEX
• LINE OF SIGHT
• FEEDBACK
• ATMOSPHERIC ATTENUATION
• MICROWAVE COMMUNICATIONS
• UNITED KINGDOM

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE