Robichaud Alexandre, Nabki Frederic et Deslandes Dominic. (2016). An efficient reference-based adaptive antenna impedance matching CMOS circuit. Dans 2016 IEEE International Symposium on Circuits and Systems (ISCAS). (2016, p. 1402-1405). Piscataway, NJ : Institute of Electrical and Electronics Engineers.
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URL officielle: http://dx.doi.org/doi:10.1109/ISCAS.2016.7527512
Résumé
This paper presents a simple integrated reference based adaptive matching network capable of undertaking real time antenna tuning for applications such as wearable wireless sensors. The signal sent to the antenna is compared to a reference signal using a single flip-flop acting as a phase detector. In case of an impedance mismatch, a counter controlling a capacitor bank is activated reducing the sensed mismatch. The system is capable of three modes: calibration, matching and operation. The calibration mode ensures that the reference signal is in phase with the signal sent to the antenna when the impedance of the antenna is 50 Ω. In matching mode, the capacitor bank is adjusted to maintain antenna matching. In operation mode, the circuit is shut off allowing for low power consumption (85 nW while matching every 1 ms). The circuit is able to provide a VSWR <; 2 over a wide range of antenna impedance levels. It is designed in CMOS 0.13 μm technology.
| Type de document: | Chapitre de livre |
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| Date: | 2016 |
| Lieu de publication: | Piscataway, NJ |
| Identifiant unique: | 10.1109/ISCAS.2016.7527512 |
| Sujets: | Sciences naturelles et génie > Génie Sciences naturelles et génie > Génie > Génie électrique et génie électronique Sciences naturelles et génie > Sciences appliquées |
| Département, module, service et unité de recherche: | Départements et modules > Département des sciences appliquées > Module d'ingénierie |
| Mots-clés: | antennas, radiation detectors, capacitors, delays, impedance, power demand, calibration, Proceedings, antennes, détecteurs de rayonnement, condensateurs, retards, impédance, puissance appelée, étalonnage |
| Déposé le: | 22 juill. 2021 17:58 |
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| Dernière modification: | 22 juill. 2021 17:58 |
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