PROCEDE D'ADAPTATION AUTOMATIQUE D'IMPEDANCE DE CIRCUIT RADIOFREQUENCE ET CHAINE D'EMISSION OU RECEPTION A ADAPTATION AUTOMATIQUE

The method involves calculating impedance of a receiving or transmission antenna (ANT) according to a complex impedance representing a present load impedance of an amplifier (PA) and known present values of adjustable impedances (Z1, Z2) of an impedance matching network (MN). New values of the adjus...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	VINCENT PIERRE, DE FOUCAULD EMERIC, CHAN WAI PO FRANCIS
Format:	Patent
Sprache:	fre
Schlagworte:	AMPLIFIERS BASIC ELECTRONIC CIRCUITRY ELECTRICITY IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS RESONATORS
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	The method involves calculating impedance of a receiving or transmission antenna (ANT) according to a complex impedance representing a present load impedance of an amplifier (PA) and known present values of adjustable impedances (Z1, Z2) of an impedance matching network (MN). New values of the adjustable impedances are calculated from a calculated antenna impedance value to obtain total load impedance of the amplifier close to nominal load impedance. The network is controlled for adjusting the adjustable impedances with the new values. An independent claim is also included for a radio-frequency transmission or receiving chain.