Measurement of Amplitude and Phase Differences Between Two RF Signals by Using Signal Power Detection

Author

Jong-Ryul Yang

Author_Institution

Korea Electrotechnol. Res. Inst., Ansan, South Korea

Volume

24

Issue

3

fYear

2014

fDate

Mar-14

Firstpage

206

Lastpage

208

Abstract

This letter proposes a method for measuring the amplitude and phase differences between two RF signals at the same frequency. It uses power combining components and a signal power detector. The differences are calculated from the proposed equations using the power measurements of each signal and the combined signal. The method is demonstrated at 10 MHz and 5 GHz frequencies. The maximum errors in the GHz-band are 3.6% in the amplitude and 4.5 ° in the phase, and the standard deviations in the measurement are 1.94% in the amplitude and 2.16 ° in the phase.

Keywords

microwave devices; phase measurement; power measurement; signal detection; RF signals; amplitude difference measurement; frequency 10 MHz; frequency 5 GHz; phase difference measurement; power combining components; power measurements; signal power detection; Accuracy; Frequency measurement; Microwave measurement; Microwave theory and techniques; Phase measurement; Ports (Computers); Power measurement; Amplitude and phase differences; difference detection; power measurement;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2013.2293665

Filename

6712922