JPS59198011A - Balance mixer circuit - Google Patents

Balance mixer circuit

Info

Publication number
JPS59198011A
JPS59198011A JP7210183A JP7210183A JPS59198011A JP S59198011 A JPS59198011 A JP S59198011A JP 7210183 A JP7210183 A JP 7210183A JP 7210183 A JP7210183 A JP 7210183A JP S59198011 A JPS59198011 A JP S59198011A
Authority
JP
Japan
Prior art keywords
terminal
line
circuit
input terminal
signal
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.)
Pending
Application number
JP7210183A
Other languages
Japanese (ja)
Inventor
Toshiki Miyasaka
敏樹 宮坂
Shinichi Hatanaka
伸一 畑中
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP7210183A priority Critical patent/JPS59198011A/en
Publication of JPS59198011A publication Critical patent/JPS59198011A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03DDEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D9/00Demodulation or transference of modulation of modulated electromagnetic waves
    • H03D9/06Transference of modulation using distributed inductance and capacitance
    • H03D9/0608Transference of modulation using distributed inductance and capacitance by means of diodes
    • H03D9/0633Transference of modulation using distributed inductance and capacitance by means of diodes mounted on a stripline circuit

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Superheterodyne Receivers (AREA)

Abstract

PURPOSE:To decrease the coupling between an RF signal terminal and a local oscillating signal terminal by providing the local oscillating signal terminal to a position in the inside of a region surrounded by a microstrip line and also having an identical distance from two mixer diodes. CONSTITUTION:The local oscillating input terminal 2 is positioned in the inside of a closed loop line 31 of a branch line type hybrid circuit 30 and on a line segment A-A' having an identical distance in a straight line from the two mixer diodes 6. A local oscillating circuit 10 is provided to a ground conductor side of a board 11 and its output terminal is connected to the terminal 2 via a hole made to a part corresponding to the terminal 2. Since the coupling between the lines of the RF input terminal 1 and the terminal 2 is reduced considerably because of the presence of the line 31 in between in this way and since the local oscillating power irradiated from the terminal 2 to the diodes 6 directly is shared equally, the balance operation of the mixer is not disturbed.

Description

【発明の詳細な説明】 〔発明の技術分野〕 本発明は、マイクロストリップライン等の平面回路を用
いた周波数混合回路に関するもので、特にマイクロスト
リップ縁結から成るハイブリットを 回邑逍んだバランスミキサ回路に関する。
DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a frequency mixing circuit using a planar circuit such as a microstrip line, and in particular to a balanced mixer using a hybrid composed of microstrip connections. Regarding circuits.

〔発明の技術的背景とその問題点〕[Technical background of the invention and its problems]

一般に、マイクロ波帯でミキサを形成する場合には、R
F端端子1部 子における外部回路とのインピーダンスの整合の取り易
さ、及びRF端子と局部発振端子間のアイソレージ胃ン
が原理的に容易に大きくなるという点から、ハイブリッ
ド回路を使用したバランスミキサ回路が多く用いられて
いる。
Generally, when forming a mixer in the microwave band, R
A balanced mixer using a hybrid circuit is recommended because it is easy to match the impedance with the external circuit at one F-terminal terminal, and the isolation gap between the RF terminal and the local oscillation terminal can be easily increased in principle. Many circuits are used.

従来、マイクロストリップ線路を使用したバランスミキ
サ回路には、主に第1図(a) 、 (b)に示したパ
ターンで形成されるブランチライン形ハイブリッド回路
3a、3bあるいは第1図(C)に示したラットレース
形ハイブリッド回路3cが用いられてきた。これらはい
ずれも、A端子に入力された信号がC端子とD端子にそ
れぞれ周波数レベルが1/2の大きさになって現われ、
B端子には信号が現われないという特性をもつ。同様に
して、B端子に入力された信号も、C端子とD端子にそ
れぞれ周波数レベルがIAの太ささになって現われ、A
端子には信号は現われない。したがってA端子にRF倍
信号B端子に局部発振信号をそれぞれ入力してやシ、C
端子とD端子にミキサダイオードを逆向きに1個ずつ接
続して、それらミキサダイオードの2つの出力端子を1
つにまとめて、バランスミキサ回路を構成していた。第
2図にノーイブリッド回路を用いたバランスミキサ回路
構成金示す。1はRF信号入力端子、2は局部発振信号
入力端子。
Conventionally, balanced mixer circuits using microstrip lines mainly include branch line hybrid circuits 3a and 3b formed in the patterns shown in Fig. 1(a) and (b), or branch line type hybrid circuits 3a and 3b formed in the patterns shown in Fig. The rat race hybrid circuit 3c shown has been used. In both of these cases, the signal input to the A terminal appears at the C and D terminals with a frequency level of 1/2,
It has the characteristic that no signal appears at the B terminal. Similarly, the signal input to the B terminal also appears at the C and D terminals with a frequency level of IA, and A
No signal appears at the terminal. Therefore, it is necessary to input the RF multiplied signal to the A terminal, the local oscillation signal to the B terminal, and the C
Connect one mixer diode to the terminal and the D terminal in opposite directions, and connect the two output terminals of those mixer diodes to one
Together, they constituted a balanced mixer circuit. FIG. 2 shows the configuration of a balanced mixer circuit using a no-brid circuit. 1 is an RF signal input terminal, 2 is a local oscillation signal input terminal.

3はハイブリッド回路、6はミキサ用ダイオード。3 is a hybrid circuit, and 6 is a mixer diode.

8は低域f波器、9はIF信号出力信号である。Reference numeral 8 indicates a low frequency f-wave device, and reference numeral 9 indicates an IF signal output signal.

以下、同じものを示す場合には各図同一番号を使用する
ものとする。
Hereinafter, when referring to the same thing, the same number will be used in each figure.

第3図に従来の実施例としてブランチライン形ハイブリ
ッド回路を用いたバランスミキサ回路を示す。第3図に
おいて、4はブランチライン形ハイブリッド回路3の出
力端子線路4oが接続されるIF信号短絡用のスタブ回
路、5は接地導体部、7はR’F信号短絡用のオープン
スタブ、8は低域f波器、9はIF信号出力端子、10
はケースに組み込まれた局部発振回路、11はミキサ回
路の載っている基板である。入力端子扉路1から入力さ
れたRF倍信号、入力端子線路2から入力された局部発
振信号はブランチライン形ハイブリッド回路3を経てミ
キサダイオード6に加えられ、RF倍信号局部発振信号
との差信号であるIF倍信号I ’F信′号出力端子9
から取り出される。
FIG. 3 shows a balanced mixer circuit using a branch line type hybrid circuit as a conventional example. In FIG. 3, 4 is a stub circuit for shorting the IF signal to which the output terminal line 4o of the branch line type hybrid circuit 3 is connected, 5 is a grounding conductor, 7 is an open stub for shorting the R'F signal, and 8 is a stub circuit for shorting the IF signal. Low frequency f wave device, 9 is IF signal output terminal, 10
11 is a local oscillation circuit built into the case, and 11 is a board on which a mixer circuit is mounted. The RF multiplied signal input from the input terminal line 1 and the local oscillation signal input from the input terminal line 2 are applied to the mixer diode 6 via the branch line type hybrid circuit 3, and the difference signal between the RF multiplied signal and the local oscillation signal is generated. IF multiplied signal I 'F signal' signal output terminal 9
taken from.

しかしながら、従来のこうしたブランチライン形ハイブ
リッド回路もしくはラットレース形ハイブリット回路の
パターン形状は、各端子線路がすべてマイクロスト、リ
ップラインで囲まれた領域の外部に設けられており、異
なる信号が加わる入力端子1の線路と入力端子2の線路
間の結合を生ずる他、入力端子1に加わるRF倍信号比
較して電力的に非常に大きな局部発振信号の加わる入力
端子2からの2つのミキサダイオードへの不均等す局部
発振信号の放射が、バランスミキサill 作K 悪影
響を与える等の問題があった。
However, in the pattern shape of the conventional branch line type hybrid circuit or rat race type hybrid circuit, each terminal line is all provided outside the area surrounded by micro strips and lip lines, and input terminals to which different signals are applied. In addition to coupling between the line of input terminal 1 and the line of input terminal 2, there is also a coupling between the two mixer diodes from input terminal 2, which receives a local oscillation signal that is extremely large in power compared to the RF multiplied signal applied to input terminal 1. There was a problem in that the radiation of the local oscillation signal had an adverse effect on the balance mixer.

〔発明の目的〕[Purpose of the invention]

本発明の目的は、従来のバランスミキサ回路のRF倍信
号入力される入力端子線路と局部発振信号が注入される
入力端子線路間の結合を軽減すると共に、局部発振信号
端子からのミキサダイオードへの局発放射電力の均等化
を計ることによるバランスミキサ回路性能を向上させる
ことにある。
It is an object of the present invention to reduce the coupling between the input terminal line to which the RF multiplied signal of a conventional balanced mixer circuit is input and the input terminal line to which the local oscillation signal is injected, and to reduce the coupling from the local oscillation signal terminal to the mixer diode. The objective is to improve the performance of the balanced mixer circuit by equalizing the local radiated power.

さらに局部発振出力の放射自体を抑制することも目的と
している。
Another purpose is to suppress the radiation of local oscillation output itself.

〔発明の概要〕[Summary of the invention]

本発明は、バランスミキサ回路のブランチライン形ハイ
ブリッド回路又はラットレース形ノーイブリット回路の
局部発振信号端子を、マイクロストリップラインで囲ま
れた領域の内部でしかも2つのミキサダイオードからの
距離が等しい場所に設けたことを特徴としている。
The present invention locates the local oscillation signal terminal of a branch line type hybrid circuit or a rat race type no-blit circuit of a balanced mixer circuit at a location within an area surrounded by a microstrip line and at an equal distance from two mixer diodes. It is characterized by the fact that it has been established.

〔発明の効果〕〔Effect of the invention〕

本発明によれば、バランスミキサ回路のRF信号端子と
局部発振信号端子間の結合が軽減できる他、局部発振信
号端子からミキサダイオードへの局発放射電力の均等化
を計ることによりバランスミキサ回路性能を向上させる
ことができ、かつ局一部発振出力の放射自体を抑制する
ことができる。
According to the present invention, the coupling between the RF signal terminal and the local oscillation signal terminal of the balanced mixer circuit can be reduced, and the balance mixer circuit performance is improved by equalizing the local oscillation radiation power from the local oscillation signal terminal to the mixer diode. In addition, the radiation of the local oscillation output itself can be suppressed.

さらに副次的な効果として、局部発振回路を基板の裏面
に設置することにより、ミキサ回路のパターン占有面積
を削減することが可能となる。
Furthermore, as a secondary effect, by installing the local oscillation circuit on the back surface of the substrate, it is possible to reduce the area occupied by the pattern of the mixer circuit.

〔発明の実施例〕[Embodiments of the invention]

以下、図面を参照して本発明の一実施例を説明する。第
4図は、本発明の一実施例を示すものである。
Hereinafter, one embodiment of the present invention will be described with reference to the drawings. FIG. 4 shows an embodiment of the present invention.

第3図に示した従来例と同一の番号のついている部分は
、同じ機能を果しているが、従来例と異なる部分は、局
部発振入力端子2がブランチライン形ハイブリッド回路
30の閉ループ線路31の内部で、2つのミキサダイオ
ード6がらの直線距離が等しい、第4図の線分A −A
’土に位置している点である。′1:た、ケースに岨み
込まれた局部発振回路10は、基板11の凄地導体側に
設けられ、その発振出力端子は、禁板パターン上のブラ
ンチライン形ハイブリッド回路30の局部発振入力端子
2に相当する部分にあけられた穴を介して局部発振入力
端子2に接続される。この構造は、RF入力端子lと局
部発振入力端子2の線路間の結合が、間VCブランチラ
イン形ハイブリッド回路30の閉ループ線路31が存在
しているために大きく軽減されると同時Cて、局部発振
入力端子2から直]Xミキサダイオード6に放射される
局部’44fi電力が均等に目己分されるため、ミキサ
のバランス動作が乱されることがない。またブランチラ
イン形ノ・イブリッド回路30の閉ループ線路31が局
部発振入力端子2を外部回路からシールドしているため
に、発振出力の放射自体を抑制している。
The parts with the same numbers as in the conventional example shown in FIG. So, the straight line distance between the two mixer diodes 6 is equal, and the line segment A-A in FIG.
'It is a point located on the ground. '1: The local oscillation circuit 10 embedded in the case is provided on the ground conductor side of the board 11, and its oscillation output terminal is connected to the local oscillation input of the branch line type hybrid circuit 30 on the forbidden plate pattern. It is connected to the local oscillation input terminal 2 through a hole drilled in a portion corresponding to the terminal 2. In this structure, the coupling between the lines of the RF input terminal l and the local oscillation input terminal 2 is greatly reduced due to the presence of the closed loop line 31 of the VC branch line type hybrid circuit 30, and at the same time Since the local '44fi power directly radiated from the oscillation input terminal 2 to the X mixer diode 6 is evenly divided, the balance operation of the mixer is not disturbed. Further, since the closed loop line 31 of the branch line hybrid circuit 30 shields the local oscillation input terminal 2 from external circuits, the radiation of the oscillation output itself is suppressed.

さらに、本発明によれば、局部発振回路10を基板11
の接地等体側に設けたことにより、従来よりも大幅に必
要とされる基板面偵全削減することが可能となる。この
ように本発明は、ブランチライン形ハイブリッド回路3
00局部発振入力端子2の位置を変えることにより、ミ
キサ回路の性能向上が計れると同時に、基板面積の削減
によシ回路の小製化が英現できる。
Further, according to the present invention, the local oscillation circuit 10 is connected to the substrate 11.
By providing it on the grounding body side, it is possible to significantly reduce the required board surface clearance compared to the conventional method. In this way, the present invention provides a branch line type hybrid circuit 3.
By changing the position of the 00 local oscillation input terminal 2, the performance of the mixer circuit can be improved, and at the same time, the circuit can be made smaller by reducing the board area.

第5図は、本発明全方形のブランチライン形ノ・イブリ
ッド回路32で実施した例を示す図、第6図は、本発明
をラットレース形ハイブリッド回路33で実施した例を
示す図である。
FIG. 5 is a diagram showing an example in which the present invention is implemented in a omnidirectional branch line type hybrid circuit 32, and FIG. 6 is a diagram showing an example in which the present invention is implemented in a rat race type hybrid circuit 33.

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

第1図は、従来のバランスミキサ回路に使用されていた
ハイブリッド回路のパター7ン図、第2図は、バランス
ミキサ回路のブロック構成図、第3図は、ハイブリッド
回路を用いた従来のバランスミキサ回路の構成図、第4
図は本発明の一実施例に係るバランスミキサ回路の構成
図、第5図、第6図は、本発明の他の実施例を示す構成
図である。 1・・・RF信号入力端子線路、2・・・局部発振信号
入力端子、嵌結、6・・・ミキサダイオ−)’、10−
・・局部発振回路、11・・・基板、30,32.33
・・・ ノーイブリント回路、31・・・閉ループ線路
、40−1.出力端子線路。 代理人弁理士 則 近 憲 佑(ほか1名)49 第 3 図 第  4 図 第 5 図
Figure 1 is a pattern diagram of a hybrid circuit used in a conventional balanced mixer circuit, Figure 2 is a block diagram of a balanced mixer circuit, and Figure 3 is a diagram of a conventional balanced mixer circuit using a hybrid circuit. Circuit configuration diagram, 4th
The figure is a block diagram of a balanced mixer circuit according to one embodiment of the present invention, and FIGS. 5 and 6 are block diagrams showing other embodiments of the present invention. 1...RF signal input terminal line, 2...Local oscillation signal input terminal, fitting, 6...Mixer diode)', 10-
... Local oscillation circuit, 11... Board, 30, 32.33
... No-event circuit, 31... Closed loop line, 40-1. Output terminal line. Representative Patent Attorney Noriyuki Chika (and 1 other person) 49 Figure 3 Figure 4 Figure 5

Claims (3)

【特許請求の範囲】[Claims] (1)閉ループ線路と、この閉ループ線路の外周に放射
状に接続される第1の入力端子線路ならびに第1.第2
の出力端子線路と、前記閉ループ線路、の内方に位置し
この閉ループ線路の内周に接続される第2の入力端子線
路とからなル基板の表面上に形成されるハイブリッド回
路と、一端が共通に接続され他端が前記第1.第2の出
力端子線路にそれぞれ接続されるふたつの周波数混合素
子とを有し、前記第1.第2の入力端子線路の各々に第
1、第2の入力信号を供給し、前記ふたつの周波数混合
素子の共通接続端より周波数変換出力を得るバランスミ
キサ回路。
(1) A closed loop line, a first input terminal line radially connected to the outer periphery of the closed loop line, and a first input terminal line. Second
and a second input terminal line located inside the closed loop line and connected to the inner periphery of the closed loop line. are connected in common, and the other end is connected to the first. two frequency mixing elements respectively connected to the second output terminal line; A balanced mixer circuit that supplies first and second input signals to each of the second input terminal lines and obtains a frequency conversion output from a common connection end of the two frequency mixing elements.
(2)閉ループ線路の内方に位置する第2の入力端子線
路はふたつの周波数混合素子より等距離にあることを特
徴とする特許請求の範囲第1項記載のバランスミキサ回
路。
(2) The balanced mixer circuit according to claim 1, wherein the second input terminal line located inside the closed loop line is equidistant from the two frequency mixing elements.
(3)第1の入力信号はRF倍信号あり、第2の入力信
号は局部発振回路が出力する局部発振信号であり、前記
局部発振回路は基板の裏面側に設置されていることを特
徴とする特許請求の範囲第1項記載のバランスミキサ回
路。
(3) The first input signal is an RF multiplied signal, the second input signal is a local oscillation signal output from a local oscillation circuit, and the local oscillation circuit is installed on the back side of the board. A balanced mixer circuit according to claim 1.
JP7210183A 1983-04-26 1983-04-26 Balance mixer circuit Pending JPS59198011A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7210183A JPS59198011A (en) 1983-04-26 1983-04-26 Balance mixer circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7210183A JPS59198011A (en) 1983-04-26 1983-04-26 Balance mixer circuit

Publications (1)

Publication Number Publication Date
JPS59198011A true JPS59198011A (en) 1984-11-09

Family

ID=13479674

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7210183A Pending JPS59198011A (en) 1983-04-26 1983-04-26 Balance mixer circuit

Country Status (1)

Country Link
JP (1) JPS59198011A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0389703A (en) * 1989-09-01 1991-04-15 Oki Electric Ind Co Ltd Microwave band frequency converter
CN102788963A (en) * 2012-07-27 2012-11-21 中国计量学院 Intracvavity magnetic resonance radio-frequency coil based on alternating-impedance microstrip line
CN102788964A (en) * 2012-07-27 2012-11-21 中国计量学院 Magnetic resonance breast radio frequency (RF) coil based on fractal alternating impedance microstrip line

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0389703A (en) * 1989-09-01 1991-04-15 Oki Electric Ind Co Ltd Microwave band frequency converter
JP2598522B2 (en) * 1989-09-01 1997-04-09 沖電気工業株式会社 Microwave frequency converter
CN102788963A (en) * 2012-07-27 2012-11-21 中国计量学院 Intracvavity magnetic resonance radio-frequency coil based on alternating-impedance microstrip line
CN102788964A (en) * 2012-07-27 2012-11-21 中国计量学院 Magnetic resonance breast radio frequency (RF) coil based on fractal alternating impedance microstrip line

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