JPH0221822U - - Google Patents
Info
- Publication number
- JPH0221822U JPH0221822U JP9431388U JP9431388U JPH0221822U JP H0221822 U JPH0221822 U JP H0221822U JP 9431388 U JP9431388 U JP 9431388U JP 9431388 U JP9431388 U JP 9431388U JP H0221822 U JPH0221822 U JP H0221822U
- Authority
- JP
- Japan
- Prior art keywords
- phase detector
- voltage
- bpf
- output
- detects
- 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
- 230000010355 oscillation Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Description
第１図はこの考案の一実施例による自動周波数
制御装置を示すブロツク図、第２図は従来の自動
周波数制御装置を示すブロツク図である。図にお
いて、１はミキサ、２はＢＰＦ、３は基準発振器
、４は位相検波器、６は電圧制御発振器、７は温
度センサー、８はデイジタルフイルタを示す。な
お、図中、同一符号は、同一、又は相当部分を示
す。
FIG. 1 is a block diagram showing an automatic frequency control device according to an embodiment of this invention, and FIG. 2 is a block diagram showing a conventional automatic frequency control device. In the figure, 1 is a mixer, 2 is a BPF, 3 is a reference oscillator, 4 is a phase detector, 6 is a voltage controlled oscillator, 7 is a temperature sensor, and 8 is a digital filter. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.
Claims (1)
力信号と基準発振器出力信号の位相を比較する位
相検波器と、この位相検波器の周囲温度を検出す
る温度センサーと、前記位相検波器の出力の検波
電圧を平滑化するデイジタルフイルタと、このデ
イジタルフイルタの出力の制御電圧により発振周
波数を制御される電圧制御発振器とを備えた自動
周波数制御装置。 A mixer, a BPF, a reference oscillator, a phase detector that compares the phases of the BPF output signal and the reference oscillator output signal, a temperature sensor that detects the ambient temperature of the phase detector, and a detector that detects the output of the phase detector. An automatic frequency control device that includes a digital filter that smoothes voltage and a voltage-controlled oscillator whose oscillation frequency is controlled by a control voltage output from the digital filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9431388U JPH0221822U (en) | 1988-07-14 | 1988-07-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9431388U JPH0221822U (en) | 1988-07-14 | 1988-07-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0221822U true JPH0221822U (en) | 1990-02-14 |
Family
ID=31318821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9431388U Pending JPH0221822U (en) | 1988-07-14 | 1988-07-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0221822U (en) |
-
1988
- 1988-07-14 JP JP9431388U patent/JPH0221822U/ja active Pending