Antenna switch circuit, and composite high frequency part and mobile communication device using the same

An antenna switch and high-frequency signal technology, which is applied to antennas, circuits, electrical components, etc., can solve the problems that hinder the miniaturization of portable phones, and achieve the effect of high isolation characteristics
CN1684366AInactive Publication Date: 2005-10-19PANASONIC CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
PANASONIC CORP
Publication Date
2005-10-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

First and second through-side field effect transistors are connected between first and second high frequency signal input / output terminals, and an antenna, respectively. The first and the second high frequency signal input / output terminals are connected with one end of the first and the second shunt-side field effect transistors, respectively. A series resonant circuit including a shunt capacitor and a bonding wire is connected between the other end of the first and the second shunt-side field effect transistors, and a ground.
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Description

technical field

[0001] The present invention relates to an antenna switch circuit, a composite high-frequency component using it, and a mobile communication device. Background technique

[0002] In the mobile phone communication system, the GSM (Global System fbr Mobile Communication: Global System for Mobile Communication) method and the DCS (Digital Cellular System: Digital Cellular System) method mainly used in Europe, and the PCS (Personal Communication Service) method mainly used in North America are adopted. : various ways such as personal communication business) way.

[0003] In order to use mobile phones in various regions of the world, it is necessary to carry a necessary number of mobile phones corresponding to various systems, or carry a single multiband device corresponding to various communication systems. In the latter case, in order to use a plurality of communication systems in one mobile phone, components of each communication system may be used to configur...

Claims

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