JPS6411020U - - Google Patents
Info
- Publication number
- JPS6411020U JPS6411020U JP10596387U JP10596387U JPS6411020U JP S6411020 U JPS6411020 U JP S6411020U JP 10596387 U JP10596387 U JP 10596387U JP 10596387 U JP10596387 U JP 10596387U JP S6411020 U JPS6411020 U JP S6411020U
- Authority
- JP
- Japan
- Prior art keywords
- intermediate frequency
- filters
- voltage
- detector
- variable capacitance
- 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
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Filters And Equalizers (AREA)
Description
第１図はこの考案の一実施例の構成を示す電気
回路図、第２図イ，ロ，ハは同実施例の動作を説
明するためのＩＦの帯域特性、単同調回路の共振
特性を示す図、第３図は従来のサテライトレシー
バの構成を示すブロツク図である。
５……単同調回路、６……第１の狭帯域フイル
タ、７……第２の狭帯域フイルタ、８……第１の
検波用ダイオード、９……第２の検波用ダイオー
ド、１０……差動増幅器。
Fig. 1 is an electric circuit diagram showing the configuration of an embodiment of this invention, and Fig. 2 A, B, and C show the IF band characteristics and resonance characteristics of a single-tuned circuit to explain the operation of the same embodiment. 3 are block diagrams showing the configuration of a conventional satellite receiver. 5... Single tuning circuit, 6... First narrowband filter, 7... Second narrowband filter, 8... First detection diode, 9... Second detection diode, 10... Differential amplifier.
Claims (1)
と復調器とを結ぶ伝送経路に、電圧可変容量素子
を有して前記中間周波数の帯域を通過させる同調
回路と、前記帯域内で該帯域内の中心周波数から
所定の値離れた上下の周波数の信号を通過させる
２つのフイルタと、前記２つのフイルタを通過し
た周波数成分をそれぞれ検波して直流電圧を出力
する検波器と、前記検波された直流電圧を入力と
する差動増幅器とから構成される中間周波特性検
出器とを介挿し、前記差動増幅器の出力を前記同
調回路の電圧可変容量素子に印加したことを特徴
とする中間周波特性補正回路。 A tuning circuit having a voltage variable capacitance element and passing the intermediate frequency band is provided in a transmission path connecting a frequency converter that converts a received signal to an intermediate frequency and a demodulator, and a tuning circuit that has a voltage variable capacitance element and passes the intermediate frequency band; two filters that pass signals of upper and lower frequencies that are apart from the frequency by a predetermined value; a detector that detects the frequency components that have passed through the two filters and outputs a DC voltage; and a detector that outputs a DC voltage by detecting the frequency components that have passed through the two filters; An intermediate frequency characteristic correction circuit characterized in that an intermediate frequency characteristic detector comprising a differential amplifier as an input is inserted, and the output of the differential amplifier is applied to a voltage variable capacitance element of the tuning circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10596387U JPS6411020U (en) | 1987-07-10 | 1987-07-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10596387U JPS6411020U (en) | 1987-07-10 | 1987-07-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6411020U true JPS6411020U (en) | 1989-01-20 |
Family
ID=31339048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10596387U Pending JPS6411020U (en) | 1987-07-10 | 1987-07-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6411020U (en) |
-
1987
- 1987-07-10 JP JP10596387U patent/JPS6411020U/ja active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6411020U (en) | ||
| JPS6428017U (en) | ||
| JPS637709B2 (en) | ||
| JPS6336743Y2 (en) | ||
| JPS6214764Y2 (en) | ||
| JPS6022661Y2 (en) | bandpass filter | |
| JPH026671Y2 (en) | ||
| JPS6318169Y2 (en) | ||
| JPH0241533U (en) | ||
| JP2538661Y2 (en) | Phase shift circuit of quadracha detector | |
| JPH0810974Y2 (en) | Quadrature detector | |
| JPH02120916U (en) | ||
| JPS593640Y2 (en) | Low frequency signal detection circuit | |
| JPS62183415U (en) | ||
| JPH01164131A (en) | Voltage synthesizer receiving device | |
| JPS61182130U (en) | ||
| JPS63114573U (en) | ||
| JPS6310624U (en) | ||
| JPS6273683U (en) | ||
| JPS627020U (en) | ||
| JPH0472728U (en) | ||
| JPH0434033U (en) | ||
| JPS5840955U (en) | Tuner device | |
| JPS62198730U (en) | ||
| JPH01160739U (en) |