JPS63140742U - - Google Patents
Info
- Publication number
- JPS63140742U JPS63140742U JP3195387U JP3195387U JPS63140742U JP S63140742 U JPS63140742 U JP S63140742U JP 3195387 U JP3195387 U JP 3195387U JP 3195387 U JP3195387 U JP 3195387U JP S63140742 U JPS63140742 U JP S63140742U
- Authority
- JP
- Japan
- Prior art keywords
- output
- voltage
- intermediate frequency
- circuit
- frequency signal
- 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.)
- Granted
Links
- 230000010355 oscillation Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Superheterodyne Receivers (AREA)
- Noise Elimination (AREA)
Description
第１図は本考案の一実施例の構成を示すブロツ
ク図、第２図は本考案の一実施例の作用の説明に
供する線図、第３図は従来のアナログチユーナの
場合の作用説明に供する線図である。
１および３……混合回路、２および４……帯域
フイルタ、５……検波器、６……ローパスフイル
タ、７……電圧制御発振器、８……加算器、９…
…直流オフセツト電圧。
Fig. 1 is a block diagram showing the configuration of an embodiment of the present invention, Fig. 2 is a diagram explaining the operation of an embodiment of the invention, and Fig. 3 is an explanation of the operation in the case of a conventional analog tuner. FIG. 1 and 3...Mixing circuit, 2 and 4...Band filter, 5...Detector, 6...Low pass filter, 7...Voltage controlled oscillator, 8...Adder, 9...
...DC offset voltage.
Claims (1)
第１混合回路と、第１混合回路の出力を選択度回
路を介して入力する第２混合回路と、フロントエ
ンドからの中間周波信号を入力とする中間周波選
択度回路と、中間周波選択度回路の出力を検波す
る検波器と、検波器の出力を入力するローパスフ
イルタと、直流バイアス電圧源の電圧とローパス
フイルタからの電圧を加算する加算器と、加算器
の出力を制御電圧とし、かつ発振出力を第１およ
び第２混合回路に供給する電圧制御発振器とを備
え、第１混合回路の出力の周波数を中間周波信号
周波数からずらし、このずらされた周波数を第２
混合回路で補償して第２混合回路の出力の周波数
を中間周波信号波数に戻すようにしたことを特徴
とするシンセサイザチユーナ。 a first mixing circuit into which the intermediate frequency signal from the front end is input; a second mixing circuit into which the output of the first mixing circuit is input via the selectivity circuit; and an intermediate frequency signal into which the intermediate frequency signal from the front end is input. A selectivity circuit, a detector that detects the output of the intermediate frequency selectivity circuit, a low-pass filter that inputs the output of the detector, an adder that adds the voltage of the DC bias voltage source and the voltage from the low-pass filter, and an adder that adds the voltage of the DC bias voltage source and the voltage from the low-pass filter. a voltage-controlled oscillator that uses the output of the device as a control voltage and supplies the oscillation output to the first and second mixing circuits; the frequency of the output of the first mixing circuit is shifted from the intermediate frequency signal frequency; the second
A synthesizer tuner characterized in that the frequency of the output of the second mixing circuit is returned to the intermediate frequency signal wave number by compensation with a mixing circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987031953U JPH0546360Y2 (en) | 1987-03-06 | 1987-03-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987031953U JPH0546360Y2 (en) | 1987-03-06 | 1987-03-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63140742U true JPS63140742U (en) | 1988-09-16 |
| JPH0546360Y2 JPH0546360Y2 (en) | 1993-12-03 |
Family
ID=30838168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987031953U Expired - Lifetime JPH0546360Y2 (en) | 1987-03-06 | 1987-03-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0546360Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57155840A (en) * | 1981-03-20 | 1982-09-27 | Trio Kenwood Corp | Distortion reducing circuit |
| JPS61256830A (en) * | 1985-05-09 | 1986-11-14 | Maspro Denkoh Corp | Interference wave eliminating device |
-
1987
- 1987-03-06 JP JP1987031953U patent/JPH0546360Y2/ja not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57155840A (en) * | 1981-03-20 | 1982-09-27 | Trio Kenwood Corp | Distortion reducing circuit |
| JPS61256830A (en) * | 1985-05-09 | 1986-11-14 | Maspro Denkoh Corp | Interference wave eliminating device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0546360Y2 (en) | 1993-12-03 |