NDLI: Modeling the baseband output envelope of a Microwave detector

Content Provider	IEEE Xplore Digital Library
Author	Gomme, L. Rolain, Y. Schoukens, J. Pintelon, R.
Copyright Year	2009
Description	Author affiliation: Vrije Universiteit Brussel (Dept. ELEC/IW); Pleinlaan 2; B-1050 (Belgium) (Gomme, L.; Rolain, Y.; Schoukens, J.; Pintelon, R.)
Abstract	The current state-of-the-art for the calibration of wave spectra containing spectral lines that lie on a harmonic grid (f0, 2f0…) relies on the well-established step recovery diode method [1]. The challenge in narrow band modulated measurements resides in the calibration of the instrument's phase distortion for such signals. A crystal detector (HP 420C, [2,3]) is studied as a candidate reference element for the phase calibration of the Large-Signal network analyzer (LSNA) for modulated excitations as the detector translates the envelope of the RF-signal to IF frequencies. A realistic crystal detector itself will introduce phase distortion, hence the identification and validation of a parametric black-box model of the detector was undertaken. In this work a nonlinear feedback model for a crystal detector is constructed: the model contains a low-pass filter in the feedforward path and a Wiener system in the feedback loop. In the first part of the paper the model extraction is discussed. The model is estimated from baseband data and needs to be validated for use with high frequency signals: the model needs to be extrapolated to RF frequencies. Therefore the physical representation of the model structure is translated into its differential equation in section 4. By means of this equation the low frequency output envelope is computed for RF input signals and compared to the measured envelope in section 5.
Starting Page	1
Ending Page	4
File Size	5006619
Page Count	4
File Format	PDF
ISBN	9781424434428
DOI	10.1109/ARFTG.2009.5278071
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-06-12
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Baseband Envelope detectors Phase detection Calibration Frequency estimation Phase modulation Phase distortion Phase frequency detector Feedback loop RF signals
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
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