JPS6037807A - Crystal variable frequency oscillator - Google Patents
Crystal variable frequency oscillatorInfo
- Publication number
- JPS6037807A JPS6037807A JP14532983A JP14532983A JPS6037807A JP S6037807 A JPS6037807 A JP S6037807A JP 14532983 A JP14532983 A JP 14532983A JP 14532983 A JP14532983 A JP 14532983A JP S6037807 A JPS6037807 A JP S6037807A
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- crystal
- variable
- parallel
- series
- 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
Links
- 239000013078 crystal Substances 0.000 title claims abstract description 38
- 230000010355 oscillation Effects 0.000 claims abstract description 19
- 230000036039 immunity Effects 0.000 claims 2
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 2
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 239000003990 capacitor Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 description 1
- 229910001635 magnesium fluoride Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
- H03H9/58—Multiple crystal filters
-
- 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
- H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
- H03H9/545—Filters comprising resonators of piezoelectric or electrostrictive material including active elements
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Oscillators With Electromechanical Resonators (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、水晶振動子を用いて発振周波数を可変するこ
とができる水晶可変周波数発揚器に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a crystal variable frequency oscillator whose oscillation frequency can be varied using a crystal resonator.
従来、発振周波数を可変することができる水晶可変周波
数発振器として、所謂型圧制イハ１；水晶発振器（ｖｃ
ｘｏ）が知られている。第１図はこのようなＶＣＸＯの
一例を示す回路図で端子Ｐ１゜２２間に与えられる制御
電圧ＶＣを抵抗Ｒを介してバリキャップＶＣに印加する
。そしてトランジスタＴｒのベースと上記バリキャップ
ＶＣのカソードとの間に水晶振動子Ｘを介挿し、このト
ランジスタＴｒのベース・エミッタ間およびエミッタ・
コレクタ間にそれぞれコンデンサＣ，，Ｃ２を介挿して
いる。そして開側１′市王Ｖｃを可変することにより水
晶振動子Ｘに直列に介挿したバリキャップＶＣの静１１
Ｌ容ｉ七を可変して発振周波数を変化させるようにして
いる。Conventionally, as a crystal variable frequency oscillator whose oscillation frequency can be varied, a so-called crystal oscillator (vc
xo) is known. FIG. 1 is a circuit diagram showing an example of such a VCXO, in which a control voltage VC applied between terminals P1 and 22 is applied to a varicap VC via a resistor R. A crystal oscillator X is inserted between the base of the transistor Tr and the cathode of the varicap VC, and the crystal oscillator
Capacitors C, C2 are inserted between the collectors. Then, by varying the open side 1' capital Vc, the static 11 of the varicap VC inserted in series with the crystal resonator
The oscillation frequency is changed by varying the L capacity and i7.
ところでこのような発振回路の発振局？！ｚ−叔の可変
幅は、その水晶振動子Ｘの等測定数（Ｌｌ。By the way, what is the oscillation station of such an oscillation circuit? ! The variable width of z-uncle is the equal measurement number (Ll) of the crystal oscillator X.
Ｃｏ＋ ０１等）で決定され、さらにこのような水晶振
動子の等測定数はその電極寸法によって略、決定される
。第２図は水晶振動子の等価回路の一１！／１１を示す
図でインダクタンスＬ０、コンデンサＣ，および抵抗Ｒ
，の直列回路に並列にコンデンサＣＱを４＆ ｆＡして
示すことができる。Co + 01, etc.), and the equal measurement number of such a crystal resonator is approximately determined by its electrode dimensions. Figure 2 shows the equivalent circuit of a crystal resonator. /11, inductance L0, capacitor C, and resistance R
, can be shown by connecting a capacitor CQ of 4&fA in parallel to the series circuit of .
しかしながら近時水晶発振器の形状を小屋化することが
要求され、それによって水晶振動子も小型になり′電極
寸法にも限界を生じ周波数可変＋ｌｘＷも狭くならざる
を得ない。またこの種の水晶＋ＴＪ変周波数発振器では
、広い周波数可変幅とともに発振周波数が安定で、かつ
経年変化も少ないことが望まれる。しかしながら発振周
波数をｉ’ｉＪ’変しイ（Ｊるものでは単一周波数の発
振器に比して発振周波数の安定度は低く、また経年変化
も大きくなることは避けられない。However, in recent years, there has been a demand for crystal oscillators to have a more compact shape, which has led to smaller crystal oscillators, which has also placed limits on electrode dimensions and has forced the frequency variable +lxW to become narrower. Further, in this type of crystal + TJ variable frequency oscillator, it is desired that the oscillation frequency is stable with a wide frequency variable range, and that there is little change over time. However, in the case where the oscillation frequency is changed i'iJ', the stability of the oscillation frequency is lower than that of a single frequency oscillator, and it is inevitable that the change over time will increase.
本発明は上記の事・［ｊ７に鑑みてなされたもので周波
数可変幅が広く、発振周波数も安定でかつ経年変化も少
ない水晶可変周波政見振器を提供することを目的とする
ものである。The present invention has been made in view of the above-mentioned problems.It is an object of the present invention to provide a crystal variable frequency control oscillator that has a wide frequency variable range, stable oscillation frequency, and little change over time.
以下本発明の一実施例を図面を参照して詳細に説明する
。すなわちＶＣＸＯで段載、たとえばｎ個の水晶振動子
を並列に接続すると、その前側定数Ｌ□は１／ｎ倍、Ｃ
Ｉはｎ倍、Ｃｏ Ｆｉ １１倍になる。捷たｎ個の水晶
振動子全並列にｌｉｉ １１′−ｉｉ： したＶＣＸＯ
における周波数可変幅全単体の水晶振動子を用いたＶＣ
ＸＯのそれのｍ倍とすると′ｒＫ式％式％
ただしＣＬ、、ＣＬ２ は発振回路の負荷容：１なおこ
の場合、ｎ個の各水晶振動子の共振片、ｊ波数の偏差は
、目的とする発振周波数の±１０％とすることがスゲリ
アス等の点からもＱｒ斗しいことが実験により確かめら
れた。An embodiment of the present invention will be described in detail below with reference to the drawings. In other words, when a VCXO is mounted in stages, for example, n crystal oscillators are connected in parallel, the front constant L□ is 1/n times, C
I becomes n times, Co Fi becomes 11 times. 11'-ii: VCXO with n crystal oscillators fully parallel
VC using a single crystal resonator with variable frequency range in
If it is m times that of It has been confirmed through experiments that setting the oscillation frequency to ±10% is favorable from the viewpoint of Sgelius and the like.
なおこのよりなりｃｘｏでは発振りｊイ皮かｔは水晶振
ｒ’ＫＩ３子の特性だけでなく直列に介伸される・・リ
キャツプ等の可変谷間素子、配線のｒｙ ；ｒｌｒ省：
１；勺ｊにも影響される。このために水晶振）“＋ｊ子
お」：ひ発」辰回路を１枚のプリント糸４反上に９１１
立又、これらを同−容器内に真空もしくは不活性ガスと
共に封入し、機械的、化掌的な安定を図ることが考えら
れている。しかしなからこのようにしてもｌＪｇ伍回路
、トランジスタ等のパッケージあるいはコンデンサ等か
ら経時的に発生する不要ガスのために水晶振動子の電極
が汚染され、あるいは容器内の気圧の上昇のために発振
周波数が＋ｊｘｆ時的に変化することは避けられなかっ
た。In addition, in this way, in CXO, the oscillation is not only due to the characteristics of the crystal oscillator r'KI triplet, but also through the series intervening...variable valley elements such as recaps, wiring ry; rlr saving:
1; It is also influenced by Tsukoj. For this purpose, attach the ``+Jzio'': ``Tatsu circuit'' to one piece of printed thread 4 times 911 on top.
It has also been considered to seal these in the same container together with a vacuum or an inert gas to achieve mechanical and chemical stability. However, even with this method, the electrodes of the crystal resonator may become contaminated due to unnecessary gases generated over time from circuits, transistor packages, capacitors, etc., or oscillation may occur due to an increase in the atmospheric pressure inside the container. It was inevitable that the frequency would change +jxf over time.
しかしてこのような場合、水晶振動子および発振器Ｌ１
１１を牟−プリント基板上に組立てて全体をガラス、フ
ッ化マグネシウム（ｕｙＦ） 力γの絶縁ｆｒ’；、
ＩＩＱで成うことにより不要ガスが発生し、あるいは容
器内に拡散されることを防止でき発振周波数の経時変化
を著るしく少なくできる。However, in such a case, the crystal resonator and oscillator L1
11 is assembled on a printed circuit board and the whole is made of glass, magnesium fluoride (UYF), and insulation fr' of force γ;
By using IIQ, unnecessary gases can be prevented from being generated or diffused into the container, and changes in the oscillation frequency over time can be significantly reduced.
さらに２個の水晶振動子を並列に接続するＶＣＸＯの゛
話合、たとえば第３図に示す斜視図のようにベース１を
貫通する一対の端子２を設け、この端子２の先端部に相
対面してそれぞれ保持板３を溶着等で取着し、この保持
板３に設けた２条のスリットにそれぞれ振動子片４を挿
入し導電性接着剤等を併用して保持するようにしてもよ
い。このようにすれば保持板３および振動子片４は矩形
の枠体を’ｒｔ’ｊ成し、良好な餞１戒的強度を得られ
耐４ＦＮ ＋ｆｉｉ衝撃性も優れしかも２ ＋１６１の
振動子片を各別のケースに収納するものに叱して部品点
数も少なくでき合理的である。なお上記ベースを図示し
ないカバーで振動子片４と共に気密に封止することによ
り振動子片４のｌｊ、 ｊｆ・の汚染全防止し、かつ機
械的な外力等によるイσＵ損から保穫することができる
。第４図は上記ベース１に保持板３を取付けた状態を示
す正面１シ１で、保持板３に縦方向に２条のスリン）
３ Ａ ｆｆ形成し、かつスリット３Ａの下！１ａ１ｋ
＋ｌｑ：（広に・［４成して振動子片４を容易に挿入
できるようｌ／（１，ている。Furthermore, in the case of a VCXO that connects two crystal oscillators in parallel, for example, a pair of terminals 2 penetrating the base 1 is provided as shown in the perspective view of FIG. Then, a holding plate 3 may be attached to each by welding or the like, and the vibrator pieces 4 may be inserted into two slits provided in the holding plate 3 and held using a conductive adhesive or the like. . In this way, the holding plate 3 and the vibrator piece 4 form a rectangular frame body, which provides good strength and has excellent impact resistance of 4FN + 2 +161. It is reasonable to store each part in a separate case and reduce the number of parts. By airtightly sealing the base together with the vibrator piece 4 with a cover (not shown), contamination of lj and jf of the vibrator piece 4 can be completely prevented, and it can be protected from σU loss due to external mechanical force, etc. Can be done. Figure 4 is a front view showing the state in which the retaining plate 3 is attached to the base 1, and there are two vertical strips on the retaining plate 3).
3 A ff is formed and below the slit 3A! 1a1k
+lq: (L/(1, wide) so that the transducer piece 4 can be easily inserted.
なおこの場合、たとえば第５図に示すように保持板３に
スリット３Ａを横方向に形１ｊｋ、 しても同様の効果
を奏することができる。寸だスリット３Ａを３条以上設
けて、３枚以上の振−１ｉ１Ｂ子Ｊ４４を保持するよう
にしてもよいことは勿論である。In this case, for example, the same effect can be obtained by forming slits 3A in the shape of 1jk in the horizontal direction in the holding plate 3 as shown in FIG. Of course, three or more slits 3A may be provided to hold three or more swing-1i1B children J44.
また第１図に示すＶＣＸＱでは、水晶振動子Ｘに直列に
バリキャップＶＣ１すなわち可変容量素子を介挿するよ
うにしたが、可変インダクタを介挿しても発振周波数を
可変させることができる。したがって、可変容量素子ま
たは可変インダクタ、すなわち可変インピーダンス素子
を用いればよい。Further, in the VCXQ shown in FIG. 1, a varicap VC1, that is, a variable capacitance element is inserted in series with the crystal resonator X, but the oscillation frequency can also be varied by inserting a variable inductor. Therefore, a variable capacitance element or a variable inductor, that is, a variable impedance element may be used.
以上詳述したように本発明によれは周波数可変幅が広く
、発振周波数が安定で経年変化も少なく、耐振１α！」
価基性も良好な水晶可変周波数発１ム（器を提供するこ
とができる。As detailed above, the present invention has a wide frequency variable range, stable oscillation frequency, little change over time, and vibration resistance of 1α! ”
It is possible to provide a crystal variable frequency oscillator with good value-based properties.
第１図は電圧制御水晶発振器の−しＩ］を示す回路図、
第２図は水晶振動子の等価回路を示す図、第３図は本発
明の一実施例の水晶振動子を示す斜視図、紀４図は上記
実施例の保持板を示す図、第５図は本発明の他の実ｉｉ
ｕ Ｆｌの保持板を示す図である。
Ｘ・・・水晶振動子、ＶＣ・・・バリキャップ、’ｒｒ
・・・トランジスタ、ＣＩ 、Ｃ２・・・コンデンツー
、１・・・ベース、２・・・端子、３・・・保持板、３
Ａ・・・スリット。Figure 1 is a circuit diagram showing a voltage controlled crystal oscillator.
Fig. 2 is a diagram showing an equivalent circuit of a crystal resonator, Fig. 3 is a perspective view showing a crystal resonator according to an embodiment of the present invention, Fig. 4 is a diagram showing a holding plate of the above embodiment, and Fig. 5 is another embodiment of the present invention ii
It is a figure which shows the holding plate of uFl. X...Crystal resonator, VC...Varicap, 'rr
...Transistor, CI, C2...Condenser, 1...Base, 2...Terminal, 3...Holding plate, 3
A...Slit.
Claims (1)
水晶振動子を並列に接続し、この並列回路に発振周波数
を可変する可変インビーグンス素子を直列に介挿したこ
とを特徴とする水晶可変周波数発振器。 （２、特許請求の範囲第１項記載のものにおいて、水晶
振動子および発振回路を単一プリント基板上に組立て全
体を絶縁被膜で覆ったことを特徴とする水晶可変周波数
発振器。 （３）ベースを貫通するピンの先端にスリットを形成し
た保持板を相対面して取着し、上記スリットに振動子片
を挿入して並列に接続した複数の水晶振動子を設け、こ
の並列回路に発振周波数を可変する可変インビーグンス
素子を直列に介挿したことを特徴とする水晶可変周波数
発振器。[Claims] (1) A plurality of crystal resonators each having a deviation of resonance frequency within 10% are connected in parallel, and a variable immunity element that varies the oscillation frequency is inserted in series in this parallel circuit. Features a crystal variable frequency oscillator. (2. The crystal variable frequency oscillator according to claim 1, characterized in that the crystal resonator and the oscillation circuit are assembled on a single printed circuit board and the entire structure is covered with an insulating film. (3) Base A holding plate with a slit formed at the tip of a pin passing through is attached facing each other, and a plurality of crystal oscillators are connected in parallel by inserting a vibrator piece into the slit, and the oscillation frequency is set in this parallel circuit. A crystal variable frequency oscillator characterized by having a variable immunity element inserted in series to vary the frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14532983A JPS6037807A (en) | 1983-08-09 | 1983-08-09 | Crystal variable frequency oscillator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14532983A JPS6037807A (en) | 1983-08-09 | 1983-08-09 | Crystal variable frequency oscillator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6037807A true JPS6037807A (en) | 1985-02-27 |
Family
ID=15382645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14532983A Pending JPS6037807A (en) | 1983-08-09 | 1983-08-09 | Crystal variable frequency oscillator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6037807A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5282059A (en) * | 1975-11-07 | 1977-07-08 | Cepe | Wideeband oscillator |
| JPS5629527B2 (en) * | 1975-09-01 | 1981-07-09 |
-
1983
- 1983-08-09 JP JP14532983A patent/JPS6037807A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5629527B2 (en) * | 1975-09-01 | 1981-07-09 | ||
| JPS5282059A (en) * | 1975-11-07 | 1977-07-08 | Cepe | Wideeband oscillator |
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