JPS601056U - Tuner for satellite broadcast reception - Google Patents
Tuner for satellite broadcast receptionInfo
- Publication number
- JPS601056U JPS601056U JP9237183U JP9237183U JPS601056U JP S601056 U JPS601056 U JP S601056U JP 9237183 U JP9237183 U JP 9237183U JP 9237183 U JP9237183 U JP 9237183U JP S601056 U JPS601056 U JP S601056U
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- signal
- reception
- frequency band
- outputs
- 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
Landscapes
- Superheterodyne Receivers (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図乃至第４図はそれぞれ従来の衛星放送の受信モー
ドの代表的なシステムを示す構成図、第５図は本考案の
一実施例に係る衛星放送受信用チューナの回路構成図で
ある。
２１・・・・・・入力端子、２２・・・・・・帯域通過
群波器、２３・・・・・・低域通過ろ波器、２４・・・
・・・増幅器Ａ、 ′２５・・・・・・切換スイッ
チ、２６・・・・・・増幅器Ｂ１２７・・・・・・周波
数混合器Ａ、２８・・・・・・中間周波増幅器、２９・
・・・・・ＦＭ検波器、３０・・・・・・出力端子、３
１・・・・・・ＡＦＣユニット、３２・・・・・・第１
の局部発振器、３２ａ・・・・・・周波数設定器、３３
・・・・・・切換スイッチ、３４・・・・・・周波数混
合器Ｂ、３５・・・・・・第２の局部発振器、３６・・
・・・・切換スイッチ。1 to 4 are block diagrams showing typical systems of conventional satellite broadcast reception modes, respectively, and FIG. 5 is a circuit block diagram of a satellite broadcast reception tuner according to an embodiment of the present invention. 21...Input terminal, 22...Band pass group filter, 23...Low pass filter, 24...
... Amplifier A, '25... Changeover switch, 26... Amplifier B127... Frequency mixer A, 28... Intermediate frequency amplifier, 29.
...FM detector, 30...Output terminal, 3
1...AFC unit, 32...1st
local oscillator, 32a... frequency setter, 33
...... Selector switch, 34... Frequency mixer B, 35... Second local oscillator, 36...
...Choice switch.
Claims (1)
号が入力される入力端子と、前記画周波数帯の入力信号
を選択出力する分波器と、前記第１の受信周波数帯に対
する局部発振信号を出力する周波数可変の第１の局部発
振器を有し、前記第１の受信周波数帯の入力信号を周波
数変換して中間周波信号を出力する第１の周波数変換器
と、所定周波数の発振信号を出力する周波数固定の第２
の局部発振器及びこの第２の局部発振器の出力信号と前
記第１の局部発振器の出力信号とを混合して前記第２め
受信周波数帯に対する局部発振信号を出力する周波数混
合器を有し、前記第２の受信−周波数帯の入力信号を周
波数変換して前記中間周波信号と同じ周波数の中間周波
信号を出力する第２の周波数変換器と、前記入力端子へ
の入力信号の周波数帯に応じて前記第１、第２の周波数
変換器のいずれか一方に切換える切換スイッチとを具備
したことを特徴とする衛星放送受信用チューナ。an input terminal into which each input signal of the first reception frequency band and the second reception frequency band is input; a branching filter that selects and outputs the input signal of the image frequency band; and a local part for the first reception frequency band. a first frequency converter that has a variable frequency first local oscillator that outputs an oscillation signal, converts the frequency of an input signal in the first reception frequency band and outputs an intermediate frequency signal; and oscillation at a predetermined frequency. A second fixed frequency output signal
a local oscillator, and a frequency mixer that mixes the output signal of the second local oscillator and the output signal of the first local oscillator to output a local oscillation signal for the second reception frequency band, Second reception - a second frequency converter that converts the frequency of an input signal in a frequency band and outputs an intermediate frequency signal having the same frequency as the intermediate frequency signal; A tuner for receiving satellite broadcasting, comprising a changeover switch for switching to either one of the first and second frequency converters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9237183U JPS601056U (en) | 1983-06-16 | 1983-06-16 | Tuner for satellite broadcast reception |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9237183U JPS601056U (en) | 1983-06-16 | 1983-06-16 | Tuner for satellite broadcast reception |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS601056U true JPS601056U (en) | 1985-01-07 |
| JPH0127304Y2 JPH0127304Y2 (en) | 1989-08-15 |
Family
ID=30222543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9237183U Granted JPS601056U (en) | 1983-06-16 | 1983-06-16 | Tuner for satellite broadcast reception |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS601056U (en) |
-
1983
- 1983-06-16 JP JP9237183U patent/JPS601056U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0127304Y2 (en) | 1989-08-15 |
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