JPS5596705A - Receiving unit - Google Patents
Receiving unitInfo
- Publication number
- JPS5596705A JPS5596705A JP451579A JP451579A JPS5596705A JP S5596705 A JPS5596705 A JP S5596705A JP 451579 A JP451579 A JP 451579A JP 451579 A JP451579 A JP 451579A JP S5596705 A JPS5596705 A JP S5596705A
- Authority
- JP
- Japan
- Prior art keywords
- resistance
- lpf
- components gain
- gain
- ratio
- 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 make adjustment possible while receiving signals, by switching the unit so that the ratio of DC components gain to AC components gain in the LPF in the loop of a PLL circuit may be small for set of a channel selection voltage in respect to the receiving unit of the complete synchronous detection system.
CONSTITUTION: When a channel selection voltage to be applied to a local oscillation circuit is set in a channel selection voltage setting circuit, a high-level voltage is applied to range switching circuit 15, which is connected to the connection point between capacitor C2 and resistance R2 of LPF 13 consisting of resistance R1 and R2, capacitor C2 and amplifier A and consists of resistance R3 and transistor T, for the purpose of reducing the ratio of AC components gain to DC components gain in LPF 13. By this voltage applying, transistor T is made conductive to connect resistance R3 in parallel to resistance R2, thereby reducing the ratio of AC components gain to DC components gain in LPF 13.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP451579A JPS5596705A (en) | 1979-01-18 | 1979-01-18 | Receiving unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP451579A JPS5596705A (en) | 1979-01-18 | 1979-01-18 | Receiving unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5596705A true JPS5596705A (en) | 1980-07-23 |
Family
ID=11586178
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP451579A Pending JPS5596705A (en) | 1979-01-18 | 1979-01-18 | Receiving unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5596705A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5054274A (en) * | 1973-09-10 | 1975-05-13 | ||
JPS5193103A (en) * | 1975-02-13 | 1976-08-16 | Fueizu rotsukudo ruupukairo |
-
1979
- 1979-01-18 JP JP451579A patent/JPS5596705A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5054274A (en) * | 1973-09-10 | 1975-05-13 | ||
JPS5193103A (en) * | 1975-02-13 | 1976-08-16 | Fueizu rotsukudo ruupukairo |
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