KR20020066753A - Test fixture of surface acoustic wave filter - Google Patents

Test fixture of surface acoustic wave filter Download PDF

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Publication number
KR20020066753A
KR20020066753A KR1020010007092A KR20010007092A KR20020066753A KR 20020066753 A KR20020066753 A KR 20020066753A KR 1020010007092 A KR1020010007092 A KR 1020010007092A KR 20010007092 A KR20010007092 A KR 20010007092A KR 20020066753 A KR20020066753 A KR 20020066753A
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KR
South Korea
Prior art keywords
pcb
acoustic wave
surface acoustic
wave filter
saw filter
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KR1020010007092A
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Korean (ko)
Inventor
신양호
김지나
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엘지이노텍 주식회사
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Priority to KR1020010007092A priority Critical patent/KR20020066753A/en
Publication of KR20020066753A publication Critical patent/KR20020066753A/en

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    • 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
    • H03H9/05—Holders; Supports
    • 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
    • H03H9/135—Driving means, e.g. electrodes, coils for networks consisting of magnetostrictive materials
    • 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
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/18—Printed circuits structurally associated with non-printed electric components

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  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)

Abstract

PURPOSE: A fixing apparatus for surface acoustic wave filter tester is provided to simplify structure and shorten measurement time, while allowing components to be measured regardless of shape or size of the component. CONSTITUTION: A fixing apparatus comprises a measurement jig(4) where a PCB(2) is mounted; and a surface acoustic wave filter fixing unit installed within the measurement jig and which generates magnetic force so as to fix a surface acoustic wave filter(10) disposed onto the PCB. The measurement jig has a space(6) for installation of the surface acoustic wave filter fixing unit, and a flat upper surface for permitting the PCB to be mounted onto the flat upper surface. The surface acoustic wave filter fixing unit is constituted by an electromagnet(8) disposed within the space of the measurement jig, and which generates a magnetic force when a power is applied. The electromagnet is disposed in a vertical direction within the space of the measurement jig.

Description

표면 탄성파 필터 테스터용 고정장치 {Test fixture of surface acoustic wave filter }Fixture for surface acoustic wave filter tester {Test fixture of surface acoustic wave filter}

본 발명은 표면 탄성파 필터(이하 SAW 필터라 함)의 특성을 측정하기 위해 PCB에 표면 탄성파 필터를 고정시키는 장치에 관한 것으로서, 보다 상세하게는 고정장치의 구조를 단순화할 수 있고 측정시간을 단축할 수 있으며, PCB 및 SAW 필터의 손상을 방지하고 정밀 측정이 가능한 SAW 필터 테스터용 고정장치에 관한 것이다.The present invention relates to an apparatus for fixing a surface acoustic wave filter to a PCB for measuring the characteristics of a surface acoustic wave filter (hereinafter referred to as a SAW filter), and more particularly, it is possible to simplify the structure of the fixing device and to shorten the measurement time. The present invention relates to a fixture for a SAW filter tester, which can prevent damage to PCB and SAW filters and make precise measurements.

일반적으로 SAW 필터 또는 듀플렉서 등 PCB에 실장되는 실장 소자의 특성을 측정하기 위한 테스터기에는 실장 소자를 PCB에 고정시키기 위한 고정장치를 필요로 한다.In general, a tester for measuring characteristics of a mounting device mounted on a PCB, such as a SAW filter or duplexer, requires a fixing device for fixing the mounting device to the PCB.

즉, 고정장치는 PCB에 실장 소자를 실장할 때 실장 소자에 일정 압력을 가하여, PCB 기판에 고정시켜 측정에 필요한 전기 신호가 전달될 수 있도록 한다.That is, the fixing device applies a predetermined pressure to the mounting device when mounting the mounting device on the PCB, thereby fixing the mounting device to the PCB board so that an electrical signal necessary for measurement can be transmitted.

도 1은 종래 기술에 따른 고정장치의 측면도이다.1 is a side view of a fixing device according to the prior art.

종래의 테스트 하측에 PCB(102)를 올려 놓는 테이블(104)과, 상기 테이블(104)의 상측에 설치되어 PCB(102) 위에 놓여진 SAW 필터(106)에 일정 압력을 가하여 SAW 필터(106)를 고정시키는 클램프 기구로 구성된다.The SAW filter 106 is applied by applying a predetermined pressure to the table 104 on which the PCB 102 is placed below the conventional test, and the SAW filter 106 installed on the PCB 102 above the table 104. It consists of a clamp mechanism for fixing.

여기에서, 상기 클램프 기구는 시험자가 손으로 잡고 누르는 레버(108)와, 상기 레버(108)가 회전 가능하게 힌지 연결되는 본체(110)와, 상기 레버(108)의 하측과 연결되어 레버(108)를 당기면 하방향으로 이동되는 푸시로드(120)로 구성된다.Here, the clamp mechanism is connected to the lever 108, which is held by the tester by hand, the main body 110 to which the lever 108 is rotatably hinged, and the lower side of the lever 108 is connected to the lever 108. Pull) is composed of a push rod 120 that moves downward.

즉, 이러한 클램프 기구는 PCB(102) 위에 SAW 필터(106)를 올려 놓은 상태에서 시험자가 레버(108)를 당기면 푸시로드(120)가 하방향으로 이동되면서 SAW(106)에 일정 압력을 가하여 SAW 필터(106)를 PCB(106)에 고정시킨다.That is, such a clamp mechanism applies a constant pressure to the SAW 106 while the push rod 120 moves downward when the tester pulls the lever 108 while the SAW filter 106 is placed on the PCB 102. The filter 106 is fixed to the PCB 106.

그러나, 상기한 바와 같은 종래의 고정장치는 그 구조가 복잡하고, 다량의부품을 측정할 경우 측정시간이 길어지고 측정 부품의 모양이나 크기가 달라지면 고정장치의 구조를 변경해야 되는 문제점이 있다.However, the conventional fixing device as described above is complicated in structure, and when measuring a large number of parts, the measurement time becomes long and there is a problem in that the structure of the fixing device needs to be changed when the shape or size of the measuring part is changed.

또한, 시험자의 힘에 의해 레버(108)를 조작하기 때문에 SAW 필터(106)에 가해지는 압력이 변화되고, 이에 따라 압력 특성변화가 발생되어 정확한 측정이 어려울 뿐만 아니라 가해지는 압력이 일정 압력 이상되면 실장 소자에 손상이 발생되고, PCB 기판이 변형되어 결과적으로 정확한 측정값을 얻을 수 없는 문제점이 있다.In addition, since the lever 108 is operated by the force of the tester, the pressure applied to the SAW filter 106 is changed. Accordingly, a change in the pressure characteristic occurs, which makes it difficult to accurately measure the pressure. Damage to the mounting device occurs, and the PCB substrate is deformed, and as a result, accurate measurement values are not obtained.

본 발명은 상기한 문제점을 해결하기 위하여 창출된 것으로서, 본 발명의 목적은 전자석의 자력을 이용하여 SAW 필터를 PCB 기판에 고정시킴으로써, 그 구조를 단순화하고, 다량의 부품을 측정시 측정시간을 단축할 수 있고, 측정 부품의 모양이나 크기에 상관없이 측정이 가능한 SAW 필터 테스트용 고정장치를 제공하는 데 있다.The present invention was created to solve the above problems, an object of the present invention is to fix the SAW filter to the PCB substrate by using the magnetic force of the electromagnet, thereby simplifying the structure and shortening the measurement time when measuring a large number of parts It is possible to provide a fixture for testing SAW filters that can be measured regardless of the shape or size of the measurement part.

다른 목적은 전자석에 균일한 전류를 공급하여 SAW 필터에 가해지는 압력을 일정하게 유지하여 PCB의 변형을 방지하고 실장소자의 손상을 방지할 수 있고, 압력 특성을 일정하게 유지하여 정확한 측정을 이룰 수 있는 SAW 필터 테스터용 고정장치를 제공하는 데 있다.Another purpose is to supply a constant current to the electromagnet to maintain a constant pressure on the SAW filter to prevent PCB deformation and damage to the mounting device, and to maintain a constant pressure characteristic to achieve accurate measurements. To provide a fixture for a SAW filter tester.

도 1은 종래 기술에 따른 표면 탄성파 필터 테스터용 고정장치의 측면도이고,1 is a side view of a fixing device for a surface acoustic wave filter tester according to the prior art,

도 2는 본 발명에 따른 표면 탄성파 필터 테스터용 고정장치의 측면도이다.2 is a side view of the fixing device for the surface acoustic wave filter tester according to the present invention.

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>

2 : PCB 4 : 측정 지그2: PCB 4: measuring jig

6 : 공간부 8 : 전자석6: space part 8: electromagnet

10 : SAW 필터10: SAW filter

상기한 과제를 실현하기 위한 본 발명에 따른 SAW 필터 테스터용 고정장치는 PCB가 올려 놓여지는 측정 지그와, 상기 PCB 위에 올려 놓여지는 SAW 필터를 고정시킬 수 있도록 상기 측정 지그 내측에 설치되어 자력을 발생시키는 SAW 필터 고정수단을 포함하여 이루어짐을 특징으로 한다.SAW filter tester fixing device according to the present invention for realizing the above object is installed inside the measuring jig so as to fix the measuring jig on which the PCB is placed, and the SAW filter placed on the PCB to generate a magnetic force It characterized in that it comprises a SAW filter fixing means to.

이하, 첨부된 도면을 참조하여 본 발명의 일실시예를 설명하면 다음과 같다.Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

도 2는 본 발명에 따른 테스터용 고정장치의 단면도이다.2 is a cross-sectional view of the tester fixing device according to the present invention.

본 발명의 일 실시예에 따른 고정장치는 PCB(2)가 올려 놓여지는 측정 지그(4)와, 상기 PCB(2) 위에 올려 놓여지는 SAW 필터(10)를 고정시킬 수 있도록 상기 측정 지그(4) 내측에 설치되어 자력을 발생시키는 SAW 필터 고정수단 등으로 구성된다.The fixing device according to an embodiment of the present invention is a measuring jig 4 on which the PCB 2 is placed, and the measuring jig 4 to fix the SAW filter 10 placed on the PCB 2. It is composed of a SAW filter fixing means installed inside to generate a magnetic force.

상기 측정 지그(4)는 내측에 상기 SAW 필터 고정수단이 설치되는 일정 공간을 갖는 공간부(6)가 형성되며, 상측면은 PCB(2)가 올려 놓여질 수 있는 평판 형태이고, SAW 필터 고정수단으로부터 발생된 자력이 SAW 필터(10)측으로 전달될 수 있도록 자력 전달이 가능한 재질로 형성된다.The measuring jig 4 has a space portion 6 having a predetermined space therein is provided with the SAW filter fixing means, the upper side is a flat plate form on which the PCB 2 can be placed, SAW filter fixing means The magnetic force generated from is formed of a material capable of magnetic force transmission so that it can be transmitted to the SAW filter 10 side.

상기 SAW 필터 고정수단은 측정 지그(4)의 내측 공간부(6)에 설치되어 전원이 인가되면 일정 자력을 발생시키는 전자석(8)으로 구성된다.The SAW filter fixing means is composed of an electromagnet 8 which is installed in the inner space 6 of the measuring jig 4 and generates a constant magnetic force when power is applied.

즉, 상기 전자석(8)은 인가되는 전류의 세기에 따라 발생되는 자력을 조절할 수 있는 것으로, 측정 지그(4)의 내측에 수직으로 배치된다.That is, the electromagnet 8 can adjust the magnetic force generated according to the intensity of the applied current, and is disposed vertically inside the measuring jig 4.

상기한 바와 같이 이루어진 본 발명에 따른 SAW 필터 테스터용 고정장치의 작용을 다음에서 설명한다.The operation of the SAW filter tester fixing device according to the present invention made as described above will be described below.

먼저, 측정 지그(4)의 상측면에 PCB(2)를 올려 놓은 상태에서 측정하고자 하는 SAW 필터(10)를 PCB(2) 위에 올려 놓는다. 이러한 상태에서, 전자석(8)에 전원을 인가하면 전자석(8)에서 발생되는 자력에 의해 SAW 필터(10)가 PCB(2) 위에 고정된다. 그리고 측정이 완료된 후 전자석(8)으로 인가되는 전류를 차단하면 SAW 필터(10)에 가해지는 압력이 해제되어 SAW 필터(10)의 분리가 용이하게 이루어진다.First, the SAW filter 10 to be measured is placed on the PCB 2 while the PCB 2 is placed on the upper side of the measuring jig 4. In this state, when power is applied to the electromagnet 8, the SAW filter 10 is fixed on the PCB 2 by the magnetic force generated in the electromagnet 8. When the current applied to the electromagnet 8 is cut off after the measurement is completed, the pressure applied to the SAW filter 10 is released to facilitate the separation of the SAW filter 10.

이때, 전자석(8)으로 인가되는 전류량을 조절하게 되면 SAW 필터(10)에 가해지는 압력이 조절되어 부품의 크기 및 모양에 따라 SAW 필터(10)에 가해지는 압력을 조절할 수 있어 여러 형태의 SAW 필터 고정에 사용이 가능하고 SAW 필터(10)에 가해지는 압력을 일정하게 유지할 수 있다.At this time, if the amount of current applied to the electromagnet 8 is adjusted, the pressure applied to the SAW filter 10 may be adjusted to adjust the pressure applied to the SAW filter 10 according to the size and shape of the component. It can be used for fixing the filter and the pressure applied to the SAW filter 10 can be kept constant.

따라서, 상기와 같이 구성되고 작용되는 본 발명에 따른 SAW 필터 테스트용 고정장치는 PCB가 올려 놓여지는 측정 지그에 전자석을 설치하여 SAW 필터를 전자기적인 힘을 이용하여 고정시킴으로써, 구조를 단순화할 수 있고 SAW 필터의 형상 및 크기 상관없이 측정이 가능하며 다량의 부품을 빠른 시간 내에 측정할 수 있는 이점이 있다.Therefore, the SAW filter test fixture according to the present invention constructed and operated as described above can simplify the structure by installing an electromagnet on the measuring jig on which the PCB is placed and fixing the SAW filter using electromagnetic force. Measurements can be made regardless of the shape and size of the SAW filter, and the advantage is that large parts can be measured in a short time.

또한, 전자석에 균일한 전류를 공급하면 SAW 필터에 가해지는 압력을 일정하게 유지하여 PCB의 변형을 방지하고 실장소자의 손상을 방지할 수 있고, 압력 특성을 일정하게 유지하여 정확한 측정을 이룰 수 있다.In addition, if a uniform current is supplied to the electromagnet, the pressure applied to the SAW filter is kept constant to prevent deformation of the PCB and to prevent damage to the mounting device, and to maintain accurate pressure characteristics to achieve accurate measurement. .

Claims (2)

PCB가 올려 놓여지는 측정 지그와, 상기 PCB 위에 올려 놓여지는 SAW 필터를 고정시킬 수 있도록 상기 측정 지그 내측에 설치되어 자력을 발생시키는 SAW 필터 고정수단을 포함하여 이루어짐을 특징으로 하는 SAW 필터 테스터용 고정장치.And a measuring jig on which the PCB is placed, and a SAW filter fixing means installed inside the measuring jig to generate magnetic force so as to fix the SAW filter on the PCB. Device. 제 1 항에 있어서,The method of claim 1, 상기 SAW 필터 고정수단은 상기 측정 지그의 내측 공간부에 설치되어 전원이 인가되면 일정 자력을 발생시키는 전자석으로 구성된 것을 특징으로 하는 SAW 필터 테스터용 고정장치.The SAW filter fixing means is installed in the inner space of the measuring jig fixed device for SAW filter tester, characterized in that consisting of an electromagnet for generating a constant magnetic force when the power is applied.
KR1020010007092A 2001-02-13 2001-02-13 Test fixture of surface acoustic wave filter KR20020066753A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970047679U (en) * 1995-12-30 1997-07-31 Surface elastic and filter jig
KR19980040234U (en) * 1996-12-21 1998-09-15 서두칠 Surface acoustic wave filter jig
KR19990000347U (en) * 1997-06-09 1999-01-15 왕중일 Jig for saw filter wire bonding
KR19990026300U (en) * 1997-12-19 1999-07-15 왕중일 Jig for surface acoustic wave filter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970047679U (en) * 1995-12-30 1997-07-31 Surface elastic and filter jig
KR19980040234U (en) * 1996-12-21 1998-09-15 서두칠 Surface acoustic wave filter jig
KR19990000347U (en) * 1997-06-09 1999-01-15 왕중일 Jig for saw filter wire bonding
KR19990026300U (en) * 1997-12-19 1999-07-15 왕중일 Jig for surface acoustic wave filter

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