Phased array antenna device

Synthesizers (32, 24) for synthesizing feedback signals output from a plurality of antenna modules (4) are provided. A distortion compensation signal output unit (15) derives, from a difference between a feedback signal synthesized by the synthesizers (32, 24) and a base band signal output from a mo...

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Bibliographische Detailangaben
Hauptverfasser:	Noto, Hifumi, Ando, Nobuhiko, Nakamizo, Hideyuki, Morishige, Hideki, Hieda, Morishige
Format:	Patent
Sprache:	eng
Schlagworte:	AMPLIFIERS ANTENNAS, i.e. RADIO AERIALS BASIC ELECTRIC ELEMENTS BASIC ELECTRONIC CIRCUITRY ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY TRANSMISSION
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Beschreibung
Zusammenfassung:	Synthesizers (32, 24) for synthesizing feedback signals output from a plurality of antenna modules (4) are provided. A distortion compensation signal output unit (15) derives, from a difference between a feedback signal synthesized by the synthesizers (32, 24) and a base band signal output from a modulation unit (12), a distortion compensation coefficient that provides, to the base band signal, distortion characteristics opposite to distortion characteristics of a signal radiated from the phased array antenna and outputs a predistortion signal representing the distortion compensation coefficient to a PD unit (13).