RF attenuation measurement system with 1-kHz voltage ratio standard

Author

Kawakami, Tomoteru ; Nagatuka, Akio ; Maeda, Masaaki ; Igarashi, Shigera

Author_Institution

Electrotech. Lab., Ibaraki, Japan

Volume

42

Issue

6

fYear

1993

fDate

12/1/1993 12:00:00 AM

Firstpage

1014

Lastpage

1019

Abstract

A homodyne system for measuring attenuation at 10 GHz and 30 MHz is constructed and evaluated. The radio frequency (RF) attenuation is converted to 1-kHz attenuation, and the 1-kHz attenuation is measured by an inductive voltage divider built in a 1-kHz receiver. A 1-kHz voltage ratio standard (VRS) is proposed to check the accuracy of the 1-kHz receiver for maintaining long-term accuracy. The differences between the VRS and the 1 kHz receiver are smaller than 0.0003 dB for 0-40 dB. A precision piston attenuator of 30 MHz agrees with the system within 0.0018 dB for 0-30 dB. The change in measured values at an interval of one year are less than 0.001 dB. The results demonstrate that this system can be expected to reliably maintain high accuracy

Keywords

attenuation measurement; detector circuits; measurement standards; microwave measurement; radio receivers; radiowave propagation; 0 to 30 dB; 1 kHz; 10 GHz to 30 MHz; RF attenuation measurement; homodyne system; inductive voltage divider; long-term accuracy; precision piston attenuator; voltage ratio standard; Attenuation measurement; Attenuators; Calibration; Circuits; Frequency conversion; Maintenance; Measurement standards; Pistons; Radio frequency; Voltage;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.245655

Filename

245655