JPS62129814U - - Google Patents
Info
- Publication number
- JPS62129814U JPS62129814U JP1837486U JP1837486U JPS62129814U JP S62129814 U JPS62129814 U JP S62129814U JP 1837486 U JP1837486 U JP 1837486U JP 1837486 U JP1837486 U JP 1837486U JP S62129814 U JPS62129814 U JP S62129814U
- Authority
- JP
- Japan
- Prior art keywords
- capacitance
- variable capacitance
- diode
- capacitor
- value
- 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
- 239000003990 capacitor Substances 0.000 claims description 13
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
Landscapes
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
Description
第１図は本考案の周波数変調回路、第２図は従
来の周波数変調回路を示す。
１……結合コンデンサ、２……接地コンデンサ
、３……可変容量ダイオード、４……コイル、５
……発振用トランジスタ、６……端子、７……高
周波阻止用チヨークコイル、８……端子、９……
バイアス抵抗、１０……バイアス抵抗、１１……
結合コンデンサ、１２……端子、１３……クラツ
プコンデンサ、１４……帰還コンデンサ、１５…
…帰還コンデンサ、１６……接地コンデンサ、１
７……バイアス抵抗、１８……バイアス抵抗、１
９……バイアス抵抗、２０……電源端子、２１…
…第２の可変容量ダイオード、２２……第１の可
変容量ダイオード、２３……第２のコンデンサ、
２４……第１のコンデンサ、２５……バイパスコ
ンデンサ、２６……バイパスコンデンサ、２７…
…バイアス抵抗、２８……バイアス抵抗、２９…
…バイアス抵抗、３０……バイアス抵抗、３１…
…バイアス抵抗、３２……バイアス抵抗。
FIG. 1 shows a frequency modulation circuit according to the present invention, and FIG. 2 shows a conventional frequency modulation circuit. 1... Coupling capacitor, 2... Grounding capacitor, 3... Variable capacitance diode, 4... Coil, 5
...Oscillation transistor, 6...Terminal, 7...High frequency blocking coil, 8...Terminal, 9...
Bias resistance, 10...Bias resistance, 11...
Coupling capacitor, 12... terminal, 13... clamp capacitor, 14... feedback capacitor, 15...
...Feedback capacitor, 16...Grounding capacitor, 1
7...Bias resistance, 18...Bias resistance, 1
9...Bias resistor, 20...Power terminal, 21...
... second variable capacitance diode, 22 ... first variable capacitance diode, 23 ... second capacitor,
24...first capacitor, 25...bypass capacitor, 26...bypass capacitor, 27...
...Bias resistance, 28...Bias resistance, 29...
...Bias resistance, 30...Bias resistance, 31...
...Bias resistance, 32...Bias resistance.
Claims (1)
ードの使用容量範囲の最大容量値よりも大きい値
の第１のコンデンサとの直列容量回路と、第２の
可変容量ダイオードと該可変容量ダイオードの使
用容量範囲の最小容量値よりも小さい値の第２の
コンデンサの直列容量回路とをコイルに並列接続
した電圧制御発振回路の前記２つの可変容量ダイ
オードの少なくとも前記第１の可変容量ダイオー
ドに制御電圧を印加するとともに前記２つの可変
容量ダイオードに変調信号を印加したことを特徴
とする周波数変調回路。 A series capacitance circuit of a first variable capacitance diode and a first capacitor having a value larger than the maximum capacitance value of the used capacitance range of the variable capacitance diode, and a second variable capacitance diode and the used capacitance range of the variable capacitance diode. A control voltage is applied to at least the first variable capacitance diode of the two variable capacitance diodes of the voltage controlled oscillator circuit in which a series capacitance circuit of a second capacitor having a value smaller than the minimum capacitance value of the coil is connected in parallel to the coil. and a modulation signal is applied to the two variable capacitance diodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1837486U JPS62129814U (en) | 1986-02-12 | 1986-02-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1837486U JPS62129814U (en) | 1986-02-12 | 1986-02-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62129814U true JPS62129814U (en) | 1987-08-17 |
Family
ID=30811991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1837486U Pending JPS62129814U (en) | 1986-02-12 | 1986-02-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62129814U (en) |
-
1986
- 1986-02-12 JP JP1837486U patent/JPS62129814U/ja active Pending
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