JPS6289846U - - Google Patents
Info
- Publication number
- JPS6289846U JPS6289846U JP11401086U JP11401086U JPS6289846U JP S6289846 U JPS6289846 U JP S6289846U JP 11401086 U JP11401086 U JP 11401086U JP 11401086 U JP11401086 U JP 11401086U JP S6289846 U JPS6289846 U JP S6289846U
- Authority
- JP
- Japan
- Prior art keywords
- mixers
- mixer
- amplifier
- wideband
- unbalanced
- 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
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Superheterodyne Receivers (AREA)
Description
第１図は本考案の一実施例における広帯域受信
回路のブロツク結線図、第２図は第１図の要部特
性図、第３図は従来の広帯域受信回路のブロツク
結線図である。
２……広帯域増幅器、４，１０……混合・分波
器、５，１１……局部発振器、６，１２……不平
衡―平衡変換器、８……帯域通過濾波器、９……
低域通過濾波器、１３……中間周波増幅器。
FIG. 1 is a block wiring diagram of a wideband receiving circuit according to an embodiment of the present invention, FIG. 2 is a characteristic diagram of the main parts of FIG. 1, and FIG. 3 is a block wiring diagram of a conventional wideband receiving circuit. 2... Wideband amplifier, 4, 10... Mixer/brancher, 5, 11... Local oscillator, 6, 12... Unbalanced-balanced converter, 8... Bandpass filter, 9...
Low-pass filter, 13... intermediate frequency amplifier.
Claims (1)
器と不平衡―平衡変換部を介して前記第１及び第
２の混合器を駆動する第１及び第２の局部発振器
と、前記第１の混合器の前段に設けられた広帯域
増幅器と、前記第２の混合器の後段に設けられた
中間周波増幅器と、前記第１及び第２の混合器の
間に設けられ、スプリアス除去を行う帯域通過濾
波器及び低域通過濾波器と、前記広帯域増幅器、
中間周波増幅器と第１、第２の混合器との間を接
続する不平衡回路とを具備した広帯域受信回路。 (2) 低域通過濾波器の遮断周波数を、第１の局
部発振器の最低周波数の３倍の値以下にしたこと
を特徴とする実用新案登録請求の範囲第１項記載
の広帯域受信回路。[Claims for Utility Model Registration] (1) Single-balanced first and second mixers and first and second mixers that drive the first and second mixers via an unbalanced-balanced converter. a local oscillator, a broadband amplifier provided before the first mixer, an intermediate frequency amplifier provided after the second mixer, and between the first and second mixers. a bandpass filter and a lowpass filter that are provided and perform spurious removal; and the wideband amplifier;
A wideband receiving circuit comprising an intermediate frequency amplifier and an unbalanced circuit connecting between a first and second mixer. (2) The wideband receiving circuit according to claim 1, wherein the cutoff frequency of the low-pass filter is set to a value not more than three times the lowest frequency of the first local oscillator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11401086U JPS6289846U (en) | 1986-07-24 | 1986-07-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11401086U JPS6289846U (en) | 1986-07-24 | 1986-07-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6289846U true JPS6289846U (en) | 1987-06-09 |
Family
ID=30996348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11401086U Pending JPS6289846U (en) | 1986-07-24 | 1986-07-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6289846U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5071215A (en) * | 1973-07-07 | 1975-06-13 |
-
1986
- 1986-07-24 JP JP11401086U patent/JPS6289846U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5071215A (en) * | 1973-07-07 | 1975-06-13 |