A TDM wattmeter with a 0.5-MHz carrier frequency

Author

Filipski, Piotr S.

Author_Institution

Nat. Res. Council of Canada, Ottawa, Ont., Canada

Volume

39

Issue

1

fYear

1990

fDate

2/1/1990 12:00:00 AM

Firstpage

15

Lastpage

18

Abstract

The author describes a standard time-division-multiplexing (TDM) wattmeter with a constant average carrier frequency, no inherent phase error, and known systematic magnitude frequency error, as well as efforts to increase frequency bandwidth. The residual error of the wattmeter, after corrections, is below 100 p.p.m. up to 5 kHz. The meter is expected to find application in accurate power measurements under distorted and low power factor conditions, and as a transfer standard for interlaboratory comparisons

Keywords

measurement errors; measurement standards; power measurement; time division multiplexing; wattmeters; 0.5 MHz; TDM wattmeter; carrier frequency; distorted power factor; frequency bandwidth; interlaboratory comparisons; phase error; power measurements; residual error; standard time-division-multiplexing; systematic magnitude frequency error; transfer standard; Amplitude modulation; Delay; FETs; Frequency synchronization; Operational amplifiers; Pulse width modulation; Switches; Time division multiplexing; Voltage; Wattmeters;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.50407

Filename

50407