JPH0332878U - - Google Patents
Info
- Publication number
- JPH0332878U JPH0332878U JP1989090300U JP9030089U JPH0332878U JP H0332878 U JPH0332878 U JP H0332878U JP 1989090300 U JP1989090300 U JP 1989090300U JP 9030089 U JP9030089 U JP 9030089U JP H0332878 U JPH0332878 U JP H0332878U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- intermediate frequency
- signal
- frequency signal
- frequency conversion
- 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
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 230000010355 oscillation Effects 0.000 claims description 6
- 230000003321 amplification Effects 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
Description
第１図は本考案の一実施例を示す図、第２図は
スイツチ回路の具体例を示す図である。
１……入力端子、２……入力フイルタ、３……
高周波増幅回路、４……第１周波数変換回路、５
……第１局部発振回路、６……スイツチ回路、７
……第１中間周波増幅回路、８……第２周波数変
換回路、９……第２局部発振回路、１０……第２
中間周波増幅回路。
FIG. 1 is a diagram showing an embodiment of the present invention, and FIG. 2 is a diagram showing a specific example of a switch circuit. 1...Input terminal, 2...Input filter, 3...
High frequency amplifier circuit, 4...first frequency conversion circuit, 5
...First local oscillation circuit, 6...Switch circuit, 7
...First intermediate frequency amplification circuit, 8...Second frequency conversion circuit, 9...Second local oscillation circuit, 10...Second
Intermediate frequency amplification circuit.
Claims (1)
信号とを混合し、第１中間周波信号を導出する第
１周波数変換回路と、この第１周波数変換回路か
らの第１中間周波信号を増幅する第１中間周波増
幅回路と、第２局部発振回路からの発振信号と前
記第１中間周波信号とを混合し、第２中間周波信
号を導出する第２周波数変換回路と、この第２周
波数変換回路からの第２中間周波信号を増幅する
第２中間周波増幅回路とを備えたダブルコンバー
ジヨンチユーナであつて、前記第１及び第２周波
数変換回路間にスイツチ回路を設け、このスイツ
チ回路を介して前記第１中間周波信号を外部に導
出し得るようにしたことを特徴とするダブルコン
バージヨンチユーナ。 a first frequency conversion circuit that mixes the oscillation signal from the first local oscillation circuit and the received high frequency signal to derive a first intermediate frequency signal; and a first frequency conversion circuit that amplifies the first intermediate frequency signal from the first frequency conversion circuit. a second frequency conversion circuit that mixes the oscillation signal from the second local oscillation circuit and the first intermediate frequency signal to derive a second intermediate frequency signal; a second intermediate frequency amplification circuit for amplifying a second intermediate frequency signal of the double conversion tuner, wherein a switch circuit is provided between the first and second frequency conversion circuits, and a switch circuit is provided between the first and second frequency conversion circuits; A double convergence tuner characterized in that the first intermediate frequency signal can be derived to the outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989090300U JPH0332878U (en) | 1989-07-31 | 1989-07-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989090300U JPH0332878U (en) | 1989-07-31 | 1989-07-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0332878U true JPH0332878U (en) | 1991-03-29 |
Family
ID=31639828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989090300U Pending JPH0332878U (en) | 1989-07-31 | 1989-07-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0332878U (en) |
-
1989
- 1989-07-31 JP JP1989090300U patent/JPH0332878U/ja active Pending