Noise Analysis for Six-Port Radars with Schottky Diode Detectors

Publikationstyp
Conference Paper
Date Issued
2022-06
Sprache
English
Author(s)
Michler, Fabian  
Scheiner, Benedict  
Weigel, Robert  
Lurz, Fabian  
Institut
Hochfrequenztechnik E-3  
TORE-URI
http://hdl.handle.net/11420/13677
Journal
IEEE MTT-S International Microwave Symposium digest  
Start Page
406
End Page
409
Citation
IEEE/MTT-S International Microwave Symposium (IMS 2022)
Contribution to Conference
IEEE/MTT-S International Microwave Symposium, IMS 2022  
Publisher DOI
10.1109/IMS37962.2022.9865373
Scopus ID
2-s2.0-85137999347
Six-port continuous-wave radar systems have been used for vibration analysis in predictive maintenance and vital sign sensing applications. A core component of these systems are microwave power detectors as down-converters. This paper investigates a passive Schottky diode detector regarding its noise behavior. Therefore, diode noise measurements are presented to determine the flicker noise parameters. Based on the derived detector noise behavior, the theoretical precision limit of continuous-wave radar systems is derived and compared to measurements of a prototype at 24 GHz. A measurement precision of 1 μm could be achieved at a baseband bandwidth of 100 Hz and using a metallic target at a distance of 1 m.
Subjects
continuous-wave radar
detector noise
Schottky power detector
six-port radar