JPS6432705A - Frequency converting circuit - Google Patents
Frequency converting circuitInfo
- Publication number
- JPS6432705A JPS6432705A JP18942787A JP18942787A JPS6432705A JP S6432705 A JPS6432705 A JP S6432705A JP 18942787 A JP18942787 A JP 18942787A JP 18942787 A JP18942787 A JP 18942787A JP S6432705 A JPS6432705 A JP S6432705A
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- base
- intermediate frequency
- emitter
- frequency signal
- 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
Landscapes
- Superheterodyne Receivers (AREA)
Abstract
PURPOSE:To execute a stable frequency conversion without using an IF filter by a first transistor in which the two signals different in frequencies are supplied to a base and a second homopolar transistor in which an emitter is commonly connected. CONSTITUTION:Input terminals 18 and 19 are connected to each other, and the junction is connected to the base of an NPN type transistor Q2. The emitter common junction of transistors Q2 and Q3 is connected through a condenser C3 to a power source terminal 20 and, simultaneously, grounded through a resistance R3. To an RF signal and a local generating signal, the transistor Q2 is operated as an emitter grounding type frequency converting circuit. On the other hand, since, to an intermediate frequency signal, the transistors Q2 and Q3 are operated as differential circuit, the intermediate frequency signal generated by the transistor Q2 is conducted through the transistor Q3 from an IFT 21 to output terminals 22 and 23. Thus, the quantity of the intermediate frequency signal returned to the base of the transistor Q2 can be reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18942787A JPS6432705A (en) | 1987-07-29 | 1987-07-29 | Frequency converting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18942787A JPS6432705A (en) | 1987-07-29 | 1987-07-29 | Frequency converting circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6432705A true JPS6432705A (en) | 1989-02-02 |
Family
ID=16241067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18942787A Pending JPS6432705A (en) | 1987-07-29 | 1987-07-29 | Frequency converting circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6432705A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5148408A (en) * | 1974-10-22 | 1976-04-26 | Mitsubishi Chem Ind | Aruminiumuhakuto gohantono fukugosetsuchakuhoho |
-
1987
- 1987-07-29 JP JP18942787A patent/JPS6432705A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5148408A (en) * | 1974-10-22 | 1976-04-26 | Mitsubishi Chem Ind | Aruminiumuhakuto gohantono fukugosetsuchakuhoho |
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