JPH05166962A - Mounting structure of power amplifier - Google Patents

Mounting structure of power amplifier

Info

Publication number
JPH05166962A
JPH05166962A JP3333405A JP33340591A JPH05166962A JP H05166962 A JPH05166962 A JP H05166962A JP 3333405 A JP3333405 A JP 3333405A JP 33340591 A JP33340591 A JP 33340591A JP H05166962 A JPH05166962 A JP H05166962A
Authority
JP
Japan
Prior art keywords
gaas
power amplifier
conductor pattern
package
alumina package
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
JP3333405A
Other languages
Japanese (ja)
Inventor
Osamu Osawa
修 大沢
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry Co Ltd
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 Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Priority to JP3333405A priority Critical patent/JPH05166962A/en
Publication of JPH05166962A publication Critical patent/JPH05166962A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42Wire connectors; Manufacturing methods related thereto
    • H01L2224/47Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/4805Shape
    • H01L2224/4809Loop shape
    • H01L2224/48091Arched

Landscapes

  • Amplifiers (AREA)
  • Microwave Amplifiers (AREA)

Abstract

PURPOSE:To enable a surface-mounting type power amplifier provided with a glass epoxy board to dispense with a heat dissipating plate CONSTITUTION:A mounting board 1 is formed of glass epoxy, and a conductor pattern 7 which is formed of copper foil 105mum thick and plated with copper and solder to be 150mum in overall thickness is provided on the underside of the mounting board 1. A square hole 2 where a GaAs-alumina package 3 is installed is provided on the mounting board 1 by a spot facing tool. A GaAs FET 4 of high power is mounted on the upside of a GaAs-alumina package 3 and connected by die-bonding or wire-bonding for the formation of a circuit. The GaAs-alumina package 3 is connected to the conductor pattern 7 by soldering. Heat released from the GaAs FET 4 of high power is transmitted to the conductor pattern 7 through the GaAs-alumina package 3 and then dissipated, so that a power amplifier of this design can dispense with a heat dissipating plate.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、自動車電話や携帯電話
等の小型電話装置に用いる電力増幅器の実装構造に関す
るものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure of a power amplifier used in a small telephone device such as a car telephone or a mobile telephone.

【0002】[0002]

【従来の技術】従来、この種の電力増幅器は、例えば、
「沖研究開発Vol58,No1,P.97−98,
『800MHz帯GaAsFET小型・高効率電力増幅
器』」に開示されたものがあった。図2は前記従来の電
力増幅器の回路図、また図3はその平面図である。
2. Description of the Related Art Conventionally, a power amplifier of this type is, for example,
"Oki R & D Vol 58, No 1, P. 97-98,
There was one disclosed in "800 MHz band GaAs FET small size and high efficiency power amplifier". 2 is a circuit diagram of the conventional power amplifier, and FIG. 3 is a plan view thereof.

【0003】図2及び図3において、A1 は入力端子、
3 は第1の駆動電圧Vd1 が印加される電源端子、A
5 はゲートバイアス電圧Vg が印加される電源端子、A
6 は第2の駆動電圧Vd2 が印加される電源端子、A7
は出力端子である。入力端子A1 には抵抗R1 、インダ
クタンスL1 ,L2 及びコンデンサC1 からなる入力整
合回路が接続され、この入力整合回路は入力端子A1
入力インピーダンスを50Ωに設定するためにGaAs
FET(以下、FETという)U1 の入力段に設けられ
る。また、この入力整合回路にはFETU1 、コンデン
サC 4 、C5 、インダクタンスL4、抵抗R5 、コンデ
ンサC7 からなる段間整合回路が接続される。そして、
電源端子A3 に第1の駆動電圧Vd1 が印加され、パス
コンデンサC3 により高周波をショートさせるととも
に、電源チョークとしてのインダクタンスL3 により電
源からのノイズを除去する。このようにして、平滑化さ
れた駆動電圧がFETU1 のドレインに印加される。ま
た、このFETU 1 のソースには並列にパスコンデンサ
2 と抵抗R2 が接続され、ともに接地される。すなわ
ち、抵抗R2 によってFETU1 のゲート−ソース印加
電圧を決定するセルフバイアス方式を構成している。
2 and 3, A1Is the input terminal,
A3Is the first drive voltage Vd1Power supply terminal to which is applied, A
FiveIs a power supply terminal to which the gate bias voltage Vg is applied, A
6Is the second drive voltage Vd2Power supply terminal to which is applied, A7
Is an output terminal. Input terminal A1Resistance R1, Inda
Coutance L1, L2And capacitor C1Input adjustment consisting of
The input matching circuit is connected to the input terminal A1of
GaAs to set the input impedance to 50Ω
FET (hereinafter referred to as FET) U1Provided at the input stage of
It In addition, this input matching circuit has a FETU1, Conden
SA C Four, CFive, Inductance LFour, Resistance RFive, Conde
Sensor C7Is connected to the interstage matching circuit. And
Power supply terminal A3To the first drive voltage Vd1Applied and pass
Capacitor C3To short the high frequency
And inductance L as a power choke3Due to
Remove noise from the source. In this way, smoothed
Drive voltage is FETU1Applied to the drain of. Well
This FETU 1The source is in parallel with a pass capacitor
C2And resistance R2Are connected and both are grounded. Sanawa
Oh, resistance R2By FETU1Gate-source application
A self-bias method that determines the voltage is configured.

【0004】一方、ゲートバイアスVg (−5V)が印
加される電源端子A5 には高周波をショートさせるパス
コンデンサC6 と、抵抗R3、抵抗R4 を介して接地さ
れる回路が接続され、抵抗R3 と抵抗R4 によって分圧
された電圧が例えば出力が1.3Wの高出力GaAsF
ET(以下、高出力FETという)Q1 のゲートに印加
される。つまり、外部バイアス方式が構成される。ま
た、高出力FETQ1 のゲートには抵抗R5 とコンデン
サC7 とが直列に接続されて接地される。つまり、高出
力FETQ1 の入力ダンピング回路が構成され、高出力
FETQ1 の入力を抑圧する。さらに、高出力FETQ
1 にはコンデンサC9 、インダクタンスL 7 、コンデン
サC10、可変コンデンサC11、コンデンサC12からなる
出力整合回路を設ける。この出力整合回路は、高出力F
ETQ1 の出力インピーダンスZou t から出力端子A7
のインピーダンスが50Ωになるように整合する。ま
た、電源端子A6 に第2の駆動電圧Vd2(6±0.6
V)が印加され、パスコンデンサC8 により高周波をシ
ョートすると共に、電源チョークとしてのインダクタン
スL6 により電源からのノイズを除去する。このように
して、平滑化された駆動電圧が高出力FETQ1 のドレ
インに印加される。
On the other hand, the gate bias Vg (-5V) is marked.
Added power supply terminal AFiveIs a path that shorts high frequencies
Capacitor C6And resistance R3, Resistance RFourGrounded through
Circuit is connected and the resistance R3And resistance RFourBy partial pressure
The output voltage is, for example, a high-power GaAsF whose output is 1.3W.
ET (hereinafter referred to as high-power FET) Q1Applied to the gate of
To be done. That is, the external bias method is configured. Well
High output FETQ1Resistor R at the gate ofFiveAnd Conden
SA C7And are connected in series and grounded. That is, high output
Force FET Q1Input dumping circuit is configured, high output
FETQ1Suppress the input of. Furthermore, high output FETQ
1Capacitor C9, Inductance L 7, Conden
SA CTen, Variable capacitor C11, Capacitor C12Consists of
An output matching circuit is provided. This output matching circuit has a high output F
ETQ1Output impedance Zou tTo output terminal A7
The impedance of is matched to 50Ω. Well
Power supply terminal A6To the second drive voltage Vd2(6 ± 0.6
V) is applied and the pass capacitor C8High frequency
Inductor as a power choke
S L6Removes noise from the power supply. in this way
The smoothed driving voltage is high output FETQ1The drain
Applied to the in.

【0005】なお、抵抗値及びコンデンサの容量は、例
えば、R1 ,R5 は100Ω、R2 は20Ω、R3
3.0kΩ、R4 は3.9kΩ、C1 ,C9 は1.0p
F、C 5 は4.0pF、C2 〜C7 は1000pF、C
8 は2200pF、C10は0.7pF、C12は300p
Fである。以上のように構成された電力増幅器の回路が
ガラスエポキシ製の実装基板11上に形成され、さらに
実装基板11がガラスエポキシ製のメイン基板21上に
実装されるのであるが、高出力FETQ1 は放熱が必要
であるため、実装基板11をメイン基板21に直接実装
することはできない。
Note that the resistance value and the capacitance of the capacitor are
For example, R1, RFiveIs 100Ω, R2Is 20Ω, R3Is
3.0 kΩ, RFourIs 3.9 kΩ, C1, C9Is 1.0p
F, C FiveIs 4.0 pF, C2~ C7Is 1000 pF, C
8Is 2200pF, CTenIs 0.7 pF, C12Is 300p
It is F. The circuit of the power amplifier configured as above is
It is formed on the mounting board 11 made of glass epoxy.
The mounting board 11 is mounted on the glass epoxy main board 21.
High output FETQ1Needs heat dissipation
Therefore, the mounting substrate 11 is directly mounted on the main substrate 21.
You cannot do it.

【0006】そこで、従来は図4(a)の基板断面図、
及び図4(b)の実装構造断面図に示すように、ガラス
エポキシ製の実装基板11に角穴12を設け、GaAs
−アルミナパッケージ13に高出力FET14を搭載
し、厚さ1mm程度の銅板で構成された放熱板15に実
装基板11とともにはんだ付けして実装し、さらに、こ
の実装基板11をメイン基板21上に実装していた。
Therefore, conventionally, the substrate sectional view of FIG.
As shown in the sectional view of the mounting structure of FIG. 4B, a square hole 12 is provided in a mounting substrate 11 made of glass epoxy, and GaAs
-The high-power FET 14 is mounted on the alumina package 13, and is mounted by soldering together with the mounting board 11 on the heat dissipation plate 15 made of a copper plate having a thickness of about 1 mm, and then the mounting board 11 is mounted on the main board 21. Was.

【0007】なお、図4において、16,17は厚さが
例えば18μmの銅箔で構成された導体パターン、18
はGaAs−アルミナパッケージ13のリード端子であ
る。また、高出力FET14は樹脂により封止している
が、図示は省略した。
In FIG. 4, 16 and 17 are conductor patterns made of copper foil having a thickness of, for example, 18 μm, and 18
Are lead terminals of the GaAs-alumina package 13. Although the high-power FET 14 is sealed with resin, the illustration is omitted.

【0008】[0008]

【発明が解決しようとする課題】しかしながら、前記従
来の電力増幅器の実装構造では放熱板を設けることが必
要であるため、小型、軽量、生産性等に問題があり、技
術的に満足できるものは得られなかった。本発明は、以
上述べた小型、軽量、生産性等の問題を除去するため、
下面に厚い銅箔を設けたガラスエポキシ基板を用いるこ
とにより、放熱板の不要な電力増幅器の実装構造を提供
することを目的とする。
However, in the above-mentioned conventional mounting structure of the power amplifier, since it is necessary to provide a heat sink, there are problems in small size, light weight, productivity, etc. I couldn't get it. The present invention, in order to eliminate the problems such as small size, light weight, and productivity described above,
An object of the present invention is to provide a mounting structure of a power amplifier that does not require a heat dissipation plate by using a glass epoxy substrate having a thick copper foil on the lower surface.

【0009】[0009]

【課題を解決するための手段】前記問題点を解決するた
めに、本発明は、電力増幅器の実装構造において、穴を
形成し、かつ、下面に銅箔を主に構成した導体パターン
を設けたガラスエポキシ基板と、高出力FETを搭載し
たパッケージとを備え、パッケージを穴の中の導体パタ
ーン上に実装するように構成した。
In order to solve the above-mentioned problems, according to the present invention, in a mounting structure of a power amplifier, a hole is formed and a conductor pattern mainly composed of a copper foil is provided on the lower surface. It was provided with a glass epoxy substrate and a package with a high-power FET, and the package was mounted on the conductor pattern in the hole.

【0010】[0010]

【作用】本発明によれば、以上のように電力増幅器の実
装構造を構成したので、高出力FETの発熱はパッケー
ジを通して導体パターンに放熱される。すなわち、導体
パターンが放熱板の機能を有するので、放熱板が不要に
なる。
According to the present invention, since the mounting structure of the power amplifier is configured as described above, the heat generated by the high power FET is radiated to the conductor pattern through the package. That is, since the conductor pattern has the function of the heat sink, the heat sink is not required.

【0011】[0011]

【実施例】以下、本発明の実施例について図面を参照し
ながら詳細に説明する。図1は本発明の実施例に係る電
力増幅器の実装構造断面図であって、(a)は基板の構
造を示し、(b)は実装状態を示す。実装基板1はガラ
スエポキシで構成され、上面には銅箔で形成された導体
パターン6が、下面には105μm厚の銅箔に銅めっき
とはんだめっきを施して総厚150μmとした導体パタ
ーン7が設けられている。また、GaAs−アルミナパ
ッケージ3を設置するための角穴2(ここでは3×2.
4mmに設定)が座ぐりにより設けられている。導体パ
ターン7はGaAs−アルミナパッケージ3上に接続さ
れる高出力GaAsFET4の放熱部材、GaAs−ア
ルミナパッケージ3の取付部材、電気的なグランド部材
として機能する。
Embodiments of the present invention will now be described in detail with reference to the drawings. 1A and 1B are cross-sectional views of a mounting structure of a power amplifier according to an embodiment of the present invention, in which FIG. 1A shows a structure of a substrate and FIG. 1B shows a mounting state. The mounting substrate 1 is made of glass epoxy, and has a conductor pattern 6 formed of copper foil on the upper surface, and a conductor pattern 7 having a total thickness of 150 μm on the lower surface by performing copper plating and solder plating on a copper foil having a thickness of 105 μm. It is provided. Moreover, the square hole 2 (here, 3 × 2.
(Set to 4 mm) is provided by spot facing. The conductor pattern 7 functions as a heat dissipation member for the high-power GaAsFET 4 connected on the GaAs-alumina package 3, a mounting member for the GaAs-alumina package 3, and an electrical ground member.

【0012】GaAs−アルミナパッケージ3は前後に
金属のリード端子8を銀鑞付けにより取り付けてある。
また、上下面及びリード端子(図示せず)に金めっきを
施し、かつ、上面に高出力GaAsFET4を搭載し、
ダイボンド及びワイヤボンドにより接続して回路形成を
行っている。そして、GaAs−アルミナパッケージ3
の実装基板1に対する取付けは、GaAs−アルミナパ
ッケージ3の下面を導体パターン7にはんだ付けで接続
することにより行う。
The GaAs-alumina package 3 has metal lead terminals 8 attached to the front and rear by silver brazing.
In addition, the upper and lower surfaces and lead terminals (not shown) are plated with gold, and the high power GaAs FET 4 is mounted on the upper surface,
Circuits are formed by connecting by die bonding and wire bonding. And GaAs-alumina package 3
The mounting on the mounting board 1 is performed by connecting the lower surface of the GaAs-alumina package 3 to the conductor pattern 7 by soldering.

【0013】この実装構造により、高出力GaAsFE
T4の発熱は、GaAs−アルミナパッケージ3を通し
て導体パターン7に放熱される。すなわち、導体パター
ン7が放熱板の機能を有するので、放熱板の不要な表面
実装形の電力増幅器が実現できる。なお、本発明は上記
実施例に限定されるものではなく、本発明の趣旨に基づ
き種々の変形が可能であり、それらを本発明の範囲から
排除するものではない。
With this mounting structure, high-power GaAsFE
The heat generated at T4 is radiated to the conductor pattern 7 through the GaAs-alumina package 3. That is, since the conductor pattern 7 has the function of a heat sink, a surface mount type power amplifier that does not require a heat sink can be realized. It should be noted that the present invention is not limited to the above embodiments, and various modifications can be made based on the spirit of the present invention, and they are not excluded from the scope of the present invention.

【0014】[0014]

【発明の効果】以上、詳細に説明したように、本発明に
よれば、ガラスエポキシ基板の下面に厚い銅箔を設けた
ので、放熱板を削除できることになり、表面実装形電力
増幅器の軽薄短小化が実現できる。さらに、製造工数の
削減及び部材コスト低減等の効果がある。
As described above in detail, according to the present invention, since the thick copper foil is provided on the lower surface of the glass epoxy substrate, the heat sink can be eliminated, and the surface mount type power amplifier is light, thin, short and small. Can be realized. Furthermore, there are effects such as reduction of manufacturing man-hours and reduction of member cost.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の実施例に係る電力増幅器の実装構造断
面図である。
FIG. 1 is a sectional view of a mounting structure of a power amplifier according to an embodiment of the present invention.

【図2】従来の電力増幅器の回路図である。FIG. 2 is a circuit diagram of a conventional power amplifier.

【図3】従来の電力増幅器の平面図である。FIG. 3 is a plan view of a conventional power amplifier.

【図4】従来の電力増幅器の実装構造断面図である。FIG. 4 is a cross-sectional view of a mounting structure of a conventional power amplifier.

【符号の説明】[Explanation of symbols]

1 実装基板 2 角穴 3 GaAs−アルミナパッケージ 4 GaAsFET 6,7 導体パターン 8 リード端子 1 Mounting Substrate 2 Square Hole 3 GaAs-Alumina Package 4 GaAsFET 6,7 Conductor Pattern 8 Lead Terminal

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 (a)穴を形成し、かつ下面に銅箔を主
に構成した導体パターンを設けたガラスエポキシ基板
と、 (b)高出力FETを搭載したパッケージとを備え、 (c)該パッケージを前記穴の中の前記導体パターン上
に実装することを特徴とする電力増幅器の実装構造。
1. A glass epoxy substrate having (a) a hole and a conductor pattern mainly composed of copper foil on the lower surface, and (b) a package having a high-power FET mounted thereon, (c) A mounting structure of a power amplifier, wherein the package is mounted on the conductor pattern in the hole.
JP3333405A 1991-12-17 1991-12-17 Mounting structure of power amplifier Withdrawn JPH05166962A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3333405A JPH05166962A (en) 1991-12-17 1991-12-17 Mounting structure of power amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3333405A JPH05166962A (en) 1991-12-17 1991-12-17 Mounting structure of power amplifier

Publications (1)

Publication Number Publication Date
JPH05166962A true JPH05166962A (en) 1993-07-02

Family

ID=18265748

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3333405A Withdrawn JPH05166962A (en) 1991-12-17 1991-12-17 Mounting structure of power amplifier

Country Status (1)

Country Link
JP (1) JPH05166962A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3610015B2 (en) * 1999-05-11 2005-01-12 三菱電機株式会社 Semiconductor device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3610015B2 (en) * 1999-05-11 2005-01-12 三菱電機株式会社 Semiconductor device

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Legal Events

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Effective date: 19990311