RF Impedance Sensor for Antenna-Tuning Front Ends

RF Impedance Sensor for Antenna-Tuning Front Ends

A method for complex RF impedance sensing is proposed. The method is based on using a scalar impedance meter and an impedance tuning network for sensing the complex load impedance. The scalar measurements are conducted three times for different settings of the digitally controlled tuning network aft...

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Veröffentlicht in:IEEE transactions on microwave theory and techniques 2020-03, Vol.68 (3), p.1095-1102
Hauptverfasser: Solomko, Valentyn, Bakalski, Winfried, Cattaneo, Andrea, Tayari, Danial, Nascimento, Pablo, Essel, Jochen, Thomas, Anthony
Format: Artikel
Sprache:eng
Schlagworte:
Antenna feeds
Antenna tuning
Antennas
C-tuner
closed-loop tuning
Impedance
impedance detector
impedance tuner
Loss measurement
Radio frequency
reflectometer
Reflectometers
RF switch
Sensors
Tuners
Tuning
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Beschreibung
Zusammenfassung:A method for complex RF impedance sensing is proposed. The method is based on using a scalar impedance meter and an impedance tuning network for sensing the complex load impedance. The scalar measurements are conducted three times for different settings of the digitally controlled tuning network after which the load impedance is evaluated based on the scalar outputs from the reflectometer. The measurements of the prototype device are demonstrated. The target application for the presented system and method is the antenna-tuning front end of the multiantenna cellular handheld devices.
ISSN:0018-9480
1557-9670
DOI:10.1109/TMTT.2019.2951104