JPS6344529U - - Google Patents
Info
- Publication number
- JPS6344529U JPS6344529U JP13878286U JP13878286U JPS6344529U JP S6344529 U JPS6344529 U JP S6344529U JP 13878286 U JP13878286 U JP 13878286U JP 13878286 U JP13878286 U JP 13878286U JP S6344529 U JPS6344529 U JP S6344529U
- Authority
- JP
- Japan
- Prior art keywords
- receiving
- filter
- receiving circuit
- received signal
- sweep
- 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
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
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ブロツク図
、第２図はこの考案の他の実施例を示すブロツク
図、第３図は従来の回路を示すブロツク図である
。
図において、２はミキサ、３はＩＦフイルタ、
４は増幅器、５はＩＦフイルタ、６は増幅器、７
は検波器、８はのこぎり波発生器、９はＶＣＯで
ある。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 one embodiment of this invention, FIG. 2 is a block diagram showing another embodiment of this invention, and FIG. 3 is a block diagram showing a conventional circuit. In the figure, 2 is a mixer, 3 is an IF filter,
4 is an amplifier, 5 is an IF filter, 6 is an amplifier, 7
is a wave detector, 8 is a sawtooth wave generator, and 9 is a VCO. Note that the same reference numerals in the figures indicate the same or equivalent parts.
Claims (1)
変して受信信号を検知し、その検知タイミングで
上記掃引動作を停止させて選局を行うスーパーヘ
テロダイン式の掃引受信回路において、受信信号
検知用ＩＦフイルタを受信復調用ＩＦフイルタと
別に設け、その帯域幅を上記受信復調用ＩＦフイ
ルタよりも狭帯域としたことを特徴とする受信回
路。 In a superheterodyne sweep receiving circuit that detects a received signal by varying the receiving frequency by a sweep operation of a local oscillator, and then stops the sweep operation at the detection timing to select a station, an IF filter for detecting the received signal is used. A receiving circuit characterized in that a receiving circuit is provided separately from an IF filter for receiving demodulation, and its bandwidth is narrower than that of the IF filter for receiving demodulating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13878286U JPS6344529U (en) | 1986-09-09 | 1986-09-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13878286U JPS6344529U (en) | 1986-09-09 | 1986-09-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6344529U true JPS6344529U (en) | 1988-03-25 |
Family
ID=31044072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13878286U Pending JPS6344529U (en) | 1986-09-09 | 1986-09-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6344529U (en) |
-
1986
- 1986-09-09 JP JP13878286U patent/JPS6344529U/ja active Pending
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