Abstract
In this paper, a new architecture for an RF amplitude comparator circuit is introduced. The technique employs a trigonometric relationship enacted by passive RF components to map the amplitude ratio between two co-spectral RF signals into a phase difference. The theory of operation of the circuit is discussed in detail and the results of a practical investigation are presented, validating the approach. The results demonstrate an accuracy advantage over commercially available products. Over the frequency range of 1600–2100 MHz, amplitude offset measurements to within 0.08 dB of that of a calibrated vector signal analyzer are shown.
Translated title of the contribution | Amplitude offset estimation by phase comparison in suppression loops |
---|---|
Original language | English |
Pages (from-to) | 1742 - 1747 |
Number of pages | 6 |
Journal | IEEE Transactions on Microwave Theory and Techniques |
Volume | 58 |
Issue number | 7 |
DOIs | |
Publication status | Published - Jul 2010 |
Bibliographical note
Publisher: IEEERose publication type: Journal article
Terms of use: Copyright © July 2010 IEEE. Reprinted from IEEE Transactionson Microwave Theory and Techniques.
This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Bristol's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to [email protected].
By choosing to view this document, you agree to all provisions of the copyright laws protecting it.
Keywords
- amplitude estimation
- measurement errors
- phase measurement