KR100344637B1 - Saw duplexer - Google Patents

Saw duplexer Download PDF

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Publication number
KR100344637B1
KR100344637B1 KR1020000077950A KR20000077950A KR100344637B1 KR 100344637 B1 KR100344637 B1 KR 100344637B1 KR 1020000077950 A KR1020000077950 A KR 1020000077950A KR 20000077950 A KR20000077950 A KR 20000077950A KR 100344637 B1 KR100344637 B1 KR 100344637B1
Authority
KR
South Korea
Prior art keywords
layer
saw
cavities
stacked
matching circuit
Prior art date
Application number
KR1020000077950A
Other languages
Korean (ko)
Inventor
Sung Hong Won
Hee Soo Yoon
Original Assignee
Samsung Electro Mech
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Samsung Electro Mech filed Critical Samsung Electro Mech
Priority to KR1020000077950A priority Critical patent/KR100344637B1/en
Application granted granted Critical
Publication of KR100344637B1 publication Critical patent/KR100344637B1/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/64—Filters using surface acoustic waves
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/25—Constructional features of resonators using surface acoustic waves
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/38—Impedance-matching networks
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/125—Driving means, e.g. electrodes, coils
    • H03H9/145—Driving means, e.g. electrodes, coils for networks using surface acoustic waves

Abstract

PURPOSE: A saw duplexer is provided to increase a space usage in a package by forming a matching circuit of a multi-layer structure so as to have a structure such as an LC equivalent circuit. CONSTITUTION: A ground pattern(43) is formed on the first layer, and the second layer is placed on the first layer. Inductor and capacitor patterns(44) are stacked on the second layer with a multi-layer structure, and patterns on respective layers are connected to each other via through holes so as to form an LC matching circuit of a saw filter. Two cavities where a saw filter is inserted are formed on the third layer, which is stacked on the second layer. The first and second saw filters of different pass bands are inserted in the cavities of the third layer. Formed on the fourth layer is a bonding pad and a pattern for connecting input/output terminals of the saw filters to a ground, a transmission side, a receive side or an antenna terminal.
KR1020000077950A 2000-12-18 2000-12-18 Saw duplexer KR100344637B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020000077950A KR100344637B1 (en) 2000-12-18 2000-12-18 Saw duplexer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020000077950A KR100344637B1 (en) 2000-12-18 2000-12-18 Saw duplexer

Publications (1)

Publication Number Publication Date
KR100344637B1 true KR100344637B1 (en) 2002-07-25

Family

ID=37488532

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020000077950A KR100344637B1 (en) 2000-12-18 2000-12-18 Saw duplexer

Country Status (1)

Country Link
KR (1) KR100344637B1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040011728A (en) * 2002-07-30 2004-02-11 엘지이노텍 주식회사 Duplexer chip package and methode for manufacturing duplexer chip package
KR20040100395A (en) * 2003-05-22 2004-12-02 주식회사 에이엔티 The fbar bandpass filter and duplexer using ltcc layer coupling
KR100574533B1 (en) * 2002-07-30 2006-04-27 엘지이노텍 주식회사 METHOD FOR MANUFACTURING Front End Module CHIP
KR100579137B1 (en) 2004-12-10 2006-05-12 한국전자통신연구원 Transceiver module using ltcc

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040011728A (en) * 2002-07-30 2004-02-11 엘지이노텍 주식회사 Duplexer chip package and methode for manufacturing duplexer chip package
KR100574533B1 (en) * 2002-07-30 2006-04-27 엘지이노텍 주식회사 METHOD FOR MANUFACTURING Front End Module CHIP
KR20040100395A (en) * 2003-05-22 2004-12-02 주식회사 에이엔티 The fbar bandpass filter and duplexer using ltcc layer coupling
KR100579137B1 (en) 2004-12-10 2006-05-12 한국전자통신연구원 Transceiver module using ltcc

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A201 Request for examination
E701 Decision to grant or registration of patent right
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