JPS6035807A - Method for improving load characteristics of oscillator - Google Patents
Method for improving load characteristics of oscillatorInfo
- Publication number
- JPS6035807A JPS6035807A JP14417283A JP14417283A JPS6035807A JP S6035807 A JPS6035807 A JP S6035807A JP 14417283 A JP14417283 A JP 14417283A JP 14417283 A JP14417283 A JP 14417283A JP S6035807 A JPS6035807 A JP S6035807A
- Authority
- JP
- Japan
- Prior art keywords
- oscillator
- load characteristics
- changed
- feedback
- load
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 6
- 239000004065 semiconductor Substances 0.000 claims description 2
- 230000010355 oscillation Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/18—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising distributed inductance and capacitance
- H03B5/1864—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising distributed inductance and capacitance the frequency-determining element being a dielectric resonator
Landscapes
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は、超高周波オシレータの負荷特性の向上方法
に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for improving the load characteristics of a super high frequency oscillator.
一部のＧａＡＳ ＦＥＴとＴＥｏｔ δモードを使用す
る誘電体共振器とをアルミナ基板などの誘電体基板上に
配置し、ストリップラインで回路構成をした超高周波オ
シレータがある。There is an ultra-high frequency oscillator in which some GaAS FETs and a dielectric resonator using the TEot δ mode are arranged on a dielectric substrate such as an alumina substrate, and the circuit is configured with a strip line.
一般にオシレータでは、負荷の状態で発振周波数や出力
が変動する（以下負荷特性という）。従来は、オシレー
タの回路パターンを決定し、組み立ててしまった後、負
荷特性が悪い製品について特性向上をはかつても不可能
に近かった。Generally, in an oscillator, the oscillation frequency and output fluctuate depending on the load condition (hereinafter referred to as load characteristics). Conventionally, once the oscillator circuit pattern has been determined and assembled, it has been nearly impossible to improve the characteristics of products with poor load characteristics.
この発明の目的は、組み立て後において負荷特性を向上
させることができる方法を提供することである。An object of the invention is to provide a method that allows the load characteristics to be improved after assembly.
この発明の要旨は半導体増幅素子とｉ５！電体共振器を
組合せたオシレータの負荷特性の向上方法であって、帰
還回路中のライン長を、削ることによって変化させて帰
還量を調整し、これによってオシレータの負荷特性を向
上させる方法である。The gist of this invention is a semiconductor amplification element and an i5! This is a method of improving the load characteristics of an oscillator that combines an electric resonator, in which the line length in the feedback circuit is changed by cutting to adjust the amount of feedback, thereby improving the load characteristics of the oscillator. .
以下にこの発明の一実施例について説明する。An embodiment of the present invention will be described below.
第１図はオシレータの一部を示す図であって、ＤＲは誘
電体共振器、Ｇ、Ｄ、ＳはＱａへＳ ＦＥＴのゲート、
ドレイン、ソースがそれぞれ接続される部位を示し、「
は１／４λの帰還用ラインである。このラインＬのＡで
示す部分をリュータ等で削ることによりラインＬの長さ
Ｂを変化させると、第２図に示すように、発振周波数変
化幅ｆが最小の点がある。Δｆは、ＶＳＷＲ１，５の負
荷をオシレータにつなぎ、その間の電気長を一波長分変
化せたときの発振周波数変化幅を示す。なお、同様手法
により出力変化幅が最小になるように調整することがで
きる。FIG. 1 is a diagram showing a part of the oscillator, where DR is a dielectric resonator, G, D, and S are gates of S FET to Qa;
Indicates the parts to which the drain and source are connected, respectively, and
is a 1/4λ feedback line. When the length B of the line L is changed by cutting the portion indicated by A on the line L with a router or the like, there is a point where the oscillation frequency change width f is minimum, as shown in FIG. Δf indicates the oscillation frequency change width when the loads of VSWRs 1 and 5 are connected to the oscillator and the electrical length between them is changed by one wavelength. Note that the output change width can be adjusted to be minimized using a similar method.
以上の実施例からもあきらかなように、この発明による
と、組立後であっても負荷特性を調整することができる
。したがって従来は不良になっていた製品を良品にする
ことができる。また、一つの周波数のための回路パター
ンを異なる周波数においても使用できるようになるので
コストダウンができる。As is clear from the above embodiments, according to the present invention, the load characteristics can be adjusted even after assembly. Therefore, a product that was previously defective can be made into a good product. Furthermore, since a circuit pattern for one frequency can be used for different frequencies, costs can be reduced.
第１図は本発明一実施例の平面図、第２図は特性図。 ＤＲは誘電体共振器、しは帰還用ライン。 特 許 出 願 人 株式会社村田製作所 一〇− 蔀／図 FIG. 1 is a plan view of an embodiment of the present invention, and FIG. 2 is a characteristic diagram. DR is a dielectric resonator, and DR is a feedback line. Patent applicant Murata Manufacturing Co., Ltd. 10- 蔀/illustration
Claims (1)
負荷特性の向上方法であって、帰還回路中のライン長を
、ｈｌすることによって変化させて帰還量を調整し、こ
れによってオシレータの負荷特性を向上させる方法。A method for improving the load characteristics of an oscillator that combines a semiconductor amplifier element and a dielectric resonator, in which the line length in the feedback circuit is changed by hl to adjust the amount of feedback, thereby improving the load characteristics of the oscillator. How to improve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58144172A JPH0644692B2 (en) | 1983-08-05 | 1983-08-05 | How to improve the load characteristics of the oscillator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58144172A JPH0644692B2 (en) | 1983-08-05 | 1983-08-05 | How to improve the load characteristics of the oscillator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6035807A true JPS6035807A (en) | 1985-02-23 |
| JPH0644692B2 JPH0644692B2 (en) | 1994-06-08 |
Family
ID=15355877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58144172A Expired - Lifetime JPH0644692B2 (en) | 1983-08-05 | 1983-08-05 | How to improve the load characteristics of the oscillator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0644692B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61205009A (en) * | 1985-03-08 | 1986-09-11 | Murata Mfg Co Ltd | Microwave oscillator |
| JPS6244514U (en) * | 1985-09-06 | 1987-03-18 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55117309A (en) * | 1979-03-01 | 1980-09-09 | Murata Mfg Co Ltd | Oscillator |
-
1983
- 1983-08-05 JP JP58144172A patent/JPH0644692B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55117309A (en) * | 1979-03-01 | 1980-09-09 | Murata Mfg Co Ltd | Oscillator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61205009A (en) * | 1985-03-08 | 1986-09-11 | Murata Mfg Co Ltd | Microwave oscillator |
| JPS6244514U (en) * | 1985-09-06 | 1987-03-18 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0644692B2 (en) | 1994-06-08 |
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