JPS6226950U - - Google Patents
Info
- Publication number
- JPS6226950U JPS6226950U JP10917186U JP10917186U JPS6226950U JP S6226950 U JPS6226950 U JP S6226950U JP 10917186 U JP10917186 U JP 10917186U JP 10917186 U JP10917186 U JP 10917186U JP S6226950 U JPS6226950 U JP S6226950U
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- oscillator
- signal
- output
- beat
- 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
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Superheterodyne Receivers (AREA)
Description
第１図は一般的な受信機のブロツク図、第２図
はパスバンドシフトの効果を示す説明図、第３図
は本考案の実施例を示すブロツク図である。
１……アンテナ、２……高周波増幅器、３……
混合器、４……中間周波フイルタ、５０……局部
発振器、６……中間周波増幅器、７……プロダク
ト検波器、８……ビート発振器、９……低周波増
幅器、１０……スピーカ、５１，５８……電圧制
御発振器、５２，８１……ローパスフイルタ、５
３，８３……可変分周器、５４，８４……位相比
較器、１１，１５……デイジタル演算器、１２…
…周波数表示器、１３……アツプダウンカウンタ
、１４……回転パルス発生器。
FIG. 1 is a block diagram of a general receiver, FIG. 2 is an explanatory diagram showing the effect of a passband shift, and FIG. 3 is a block diagram showing an embodiment of the present invention. 1...Antenna, 2...High frequency amplifier, 3...
mixer, 4... intermediate frequency filter, 50... local oscillator, 6... intermediate frequency amplifier, 7... product detector, 8... beat oscillator, 9... low frequency amplifier, 10... speaker, 51, 58... Voltage controlled oscillator, 52, 81... Low pass filter, 5
3, 83... Variable frequency divider, 54, 84... Phase comparator, 11, 15... Digital arithmetic unit, 12...
...Frequency display, 13...up-down counter, 14...rotational pulse generator.
Claims (1)
中間周波信号に周波数変換し、さらに該中間周波
数信号をビート発振器からの信号により低周波信
号に周波数変換するスーパーヘテロダイン式受信
装置において、前記ビート発振器を可変分周器と
、該分周器出力との位相を比較する位相比較器と
、該位相比較器からの出力を受ける電圧制御発振
器とから成る周波数シンセサイザで構成し、さら
に周波数シフト量が設定され、前記局発用および
ビート発振用の周波数シンセサイザの分周比を演
算する手段を設け、該分周比を変えることにより
前記局発およびビート発振器の出力周波数を同時
に等量変化せしめることを特徴とする受信装置。 In a superheterodyne receiving device that frequency-converts a received signal into an intermediate frequency signal using the output of a frequency synthesizer for local oscillator, and further converts the frequency of the intermediate frequency signal into a low-frequency signal using a signal from a beat oscillator, the beat oscillator is variable. It consists of a frequency synthesizer consisting of a frequency divider, a phase comparator that compares the phase with the output of the frequency divider, and a voltage controlled oscillator that receives the output from the phase comparator, and further has a frequency shift amount set, It is characterized by providing means for calculating a frequency division ratio of the frequency synthesizer for the local oscillator and the beat oscillator, and by changing the frequency dividing ratio, the output frequencies of the local oscillator and the beat oscillator are simultaneously changed by an equal amount. Receiving device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10917186U JPS6226950U (en) | 1986-07-16 | 1986-07-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10917186U JPS6226950U (en) | 1986-07-16 | 1986-07-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6226950U true JPS6226950U (en) | 1987-02-18 |
Family
ID=30987030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10917186U Pending JPS6226950U (en) | 1986-07-16 | 1986-07-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6226950U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5390709A (en) * | 1977-01-20 | 1978-08-09 | Torio Kk | Device for shifting frequency |
-
1986
- 1986-07-16 JP JP10917186U patent/JPS6226950U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5390709A (en) * | 1977-01-20 | 1978-08-09 | Torio Kk | Device for shifting frequency |
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