JPH0369919U - - Google Patents
Info
- Publication number
- JPH0369919U JPH0369919U JP12879389U JP12879389U JPH0369919U JP H0369919 U JPH0369919 U JP H0369919U JP 12879389 U JP12879389 U JP 12879389U JP 12879389 U JP12879389 U JP 12879389U JP H0369919 U JPH0369919 U JP H0369919U
- Authority
- JP
- Japan
- Prior art keywords
- capacitor
- parallel
- switch
- variable capacitance
- capacitance diode
- 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 8
- 230000010355 oscillation Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Filters And Equalizers (AREA)
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Description
第１図はこの考案の一実施例による共振回路を
用いた電圧制御発振器の構成を示す回路図、第２
図は同実施例における共振回路の等価回路図、第
３図〜第５図は従来の電圧制御発振器の構成例を
示す回路図である。
１……発振用トランジスタ、２０……可変容量
ダイオード、２６……λ／４型誘電体共振器、１
０１Ｓおよび１０３Ｓ……ダイオード、１０１〜
１０５……コンデンサ。
FIG. 1 is a circuit diagram showing the configuration of a voltage controlled oscillator using a resonant circuit according to an embodiment of this invention, and FIG.
The figure is an equivalent circuit diagram of a resonant circuit in the same embodiment, and FIGS. 3 to 5 are circuit diagrams showing configuration examples of a conventional voltage controlled oscillator. 1... Oscillation transistor, 20... Variable capacitance diode, 26... λ/4 type dielectric resonator, 1
01S and 103S...Diode, 101~
105...Capacitor.
Claims (1)
に他端が接地されたλ／４型誘電体共振器と、 前記誘電体共振器に並列接続され、周波数制御
電圧が印加される可変容量ダイオードと、 前記可変容量ダイオードに並列接続された第１
および第２のコンデンサからなる直列容量回路と
、 帯域切換電圧によつて共に導通あるいは共に非
導通に切り換えられる第１および第２のスイツチ
と、 前記第１のスイツチの導通時、該スイツチを介
し、前記第１のコンデンサに並列接続される第３
のコンデンサと、 前記第２のスイツチの導通時、該スイツチを介
し、前記第２のコンデンサに並列接続される第４
のコンデンサと、 を具備し、前記第１および第２のコンデンサの接
続点から発振出力を取り出すことを特徴とする電
圧制御発振器における共振回路。[Claims for Utility Model Registration] A λ/4 type dielectric resonator to which the oscillation output from the oscillation section is inputted at one end and the other end is grounded, and a frequency control voltage connected in parallel to the dielectric resonator. a variable capacitance diode to which is applied, and a first variable capacitance diode connected in parallel to the variable capacitance diode.
and a second capacitor; first and second switches that are both turned on or off by a band switching voltage; when the first switch is turned on, the first and second switches a third capacitor connected in parallel to the first capacitor;
and a fourth capacitor connected in parallel to the second capacitor via the switch when the second switch is conductive.
A resonant circuit in a voltage controlled oscillator, comprising: a capacitor; and an oscillation output is extracted from a connection point between the first and second capacitors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12879389U JPH0369919U (en) | 1989-11-02 | 1989-11-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12879389U JPH0369919U (en) | 1989-11-02 | 1989-11-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0369919U true JPH0369919U (en) | 1991-07-12 |
Family
ID=31676474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12879389U Pending JPH0369919U (en) | 1989-11-02 | 1989-11-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0369919U (en) |
-
1989
- 1989-11-02 JP JP12879389U patent/JPH0369919U/ja active Pending