Accession Number:

ADA010717

Title:

Time Domain Metrology Study.

Descriptive Note:

Final technical rept. on Phase 2, Jun 72-Jun 73,

Corporate Author:

SPERRY RESEARCH CENTER SUDBURY MASS

Personal Author(s):

• Cronson,Harry M.
• Nicolson,A. Murray
• Smith,Robert S.

Report Date:

1973-08-01

Pagination or Media Count:

103.0

Abstract:

The objective was to examine the capability of time domain measurement techniques in an automatic calibration system with applications at lower frequencies than in Phase 1, viz VHF frequency ranges and below. In earlier work, methods for calibrating passive microwave components over a broad microwave frequency range 0.4 to 10 GHz were discussed. A subnanosecond risetime pulse generator was used to excite the approximate impulse or step response of the network the response was measured using a very broadband dc - 18 GHz sampling oscilloscope coupled to a laboratory instrumentation computer fast Fourier transforms were then performed on the digitized responses to translate from time-to-frequency domains, yielding the network transfer function from a single waveform measurement. Insertion loss measurements on wideband coaxial attenuators showed excellent agreement between time domain results and frequency calibration values over the range 0.4 to 8 GHz.

Descriptors:

• *CALIBRATION
• *TIME DOMAIN
• *METROLOGY
• PULSE GENERATORS
• ERRORS
• INSTRUMENTATION
• INSERTION LOSS
• AUTOMATIC
• VERY HIGH FREQUENCY
• NOISE(ELECTRICAL AND ELECTROMAGNETIC)

Subject Categories:

• Test Facilities, Equipment and Methods

Distribution Statement:

APPROVED FOR PUBLIC RELEASE