JPS6477210A - High frequency amplifier - Google Patents
High frequency amplifierInfo
- Publication number
- JPS6477210A JPS6477210A JP23232387A JP23232387A JPS6477210A JP S6477210 A JPS6477210 A JP S6477210A JP 23232387 A JP23232387 A JP 23232387A JP 23232387 A JP23232387 A JP 23232387A JP S6477210 A JPS6477210 A JP S6477210A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- output
- fet
- switching element
- input terminal
- 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
- Microwave Amplifiers (AREA)
Abstract
PURPOSE:To reduce the power consumption of an amplifier by detecting a part of the output voltage of the amplifier and changing the duty of the turning-on time of a switching element of a voltage converter to change the voltage and obtaining a certain saturation output. CONSTITUTION:The input from an input terminal 2 is amplified by an FET 11, and a part of the voltage outputted to an output terminal 4 is taken out by a distributor 3 and is detected by a detector 5. The detection output is compared with a reference voltage 69, and the difference is amplified by a differential amplifier 63, and the amplification output is inputted to a voltage pulse width modulating circuit 64 to determine the duty of the turning-on time of a switching element 65. The switching element 65 turns on and off the DC from a primary voltage input terminal 10 to convert it to an AC, and it is converted to a pulsatile current by a diode 66 and is smoothed by a inductance 67 and a capacitance 68 to supply a drain voltage 9 to the FET 11. The DC from the input terminal 10 is converted by a voltage converter 61 and is applied to a gate 12 of the FET 11. Thus, this device is suitably mounted on a satellite because the certain saturation output is obtained and the power consumption of an amplifying circuit 1 is reduced.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62232323A JPH0756926B2 (en) | 1987-09-18 | 1987-09-18 | High frequency amplifier |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62232323A JPH0756926B2 (en) | 1987-09-18 | 1987-09-18 | High frequency amplifier |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6477210A true JPS6477210A (en) | 1989-03-23 |
JPH0756926B2 JPH0756926B2 (en) | 1995-06-14 |
Family
ID=16937399
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62232323A Expired - Lifetime JPH0756926B2 (en) | 1987-09-18 | 1987-09-18 | High frequency amplifier |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0756926B2 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS574812U (en) * | 1980-06-06 | 1982-01-11 | ||
JPS5917710A (en) * | 1982-07-22 | 1984-01-30 | Toshiba Corp | Power amplifier |
-
1987
- 1987-09-18 JP JP62232323A patent/JPH0756926B2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS574812U (en) * | 1980-06-06 | 1982-01-11 | ||
JPS5917710A (en) * | 1982-07-22 | 1984-01-30 | Toshiba Corp | Power amplifier |
Also Published As
Publication number | Publication date |
---|---|
JPH0756926B2 (en) | 1995-06-14 |
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