High-frequency front-end module

A high-frequency front-end module (10) is provided with a variable circulator (20), a transmission filter (30), and a reception filter (40). Capacitors (231, 232) that are selectively connected by a switch (221) are provided between an antenna port (CPc) and a transmission port (CPt) of a circulator...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: FURUTANI KOJI, HAYAFUJI HISAO
Format: Patent
Sprache:chi ; eng
Schlagworte:
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:A high-frequency front-end module (10) is provided with a variable circulator (20), a transmission filter (30), and a reception filter (40). Capacitors (231, 232) that are selectively connected by a switch (221) are provided between an antenna port (CPc) and a transmission port (CPt) of a circulator (21) of the variable circulator (20). Capacitors (233, 234) that are selectively connected by a switch (222) are provided between the antenna port (CPc) and a reception port (CPr) of the circulator (21). Capacitors (235, 236) that are selectively connected by a switch (223) are provided between the transmission port (CPt) and the reception port (CPr) of the circulator (21). By selecting the capacitors, the phase characteristics between ports are adjusted to characteristics corresponding to transmission signals that are the transmitted and reception signals.