SWITCH MODULE

PROBLEM TO BE SOLVED: To reduce insertion loss of switch module.SOLUTION: A switch module 1 includes a first terminal P1, a first filter SAW1, a first switch SW1, a second filter SAW2 and a second switch SW2. Impedance of the first filter SAW1 is capacitive for the signal of non-passband. When the f...

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Bibliographic Details
Main Authors TOMITA TAKAYUKI, WATANABE DAISUKE
Format Patent
LanguageEnglish
Japanese
Published 16.11.2017
Subjects
BASIC ELECTRONIC CIRCUITRY
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS
RESONATORS
TRANSMISSION
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Summary:PROBLEM TO BE SOLVED: To reduce insertion loss of switch module.SOLUTION: A switch module 1 includes a first terminal P1, a first filter SAW1, a first switch SW1, a second filter SAW2 and a second switch SW2. Impedance of the first filter SAW1 is capacitive for the signal of non-passband. When the first switch SW1 is nonconductive, impedance of the first filter SAW1 is capacitive, the impedance does not become short circuit state when viewing the first filter SAW1 from the end of the first filter SAW1 connected with the first filter SAW1, and the impedance becomes open state when viewing the first filter SAW1 from the first terminal P1.SELECTED DRAWING: Figure 4 【課題】スイッチモジュールの挿入損失を低減する。【解決手段】本発明の一実施形態によるスイッチモジュール１は、第１端子Ｐ１と、第１フィルタＳＡＷ１と、第１スイッチＳＷ１と、第２フィルタＳＡＷ２と、第２スイッチＳＷ２とを備える。非通過帯域の信号に対する第１フィルタＳＡＷ１のインピーダンスは容量性である。第１スイッチＳＷ１が非導通である場合、第１スイッチＳＷ１のインピーダンスは容量性であり、第１スイッチＳＷ１の第１フィルタＳＡＷ１に接続された端部から第１フィルタＳＡＷ１を見たときのインピーダンスはショート状態とならず、第１端子Ｐ１から第１フィルタＳＡＷ１を見たときのインピーダンスはオープン状態となる。【選択図】図４
Bibliography:Application Number: JP20160096032