JPS6477210A - High frequency amplifier - Google Patents

High frequency amplifier

Info

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
Application number
JP23232387A
Other languages
Japanese (ja)
Other versions
JPH0756926B2 (en
Inventor
Shigetaka Aramaki
Toshimitsu Nakayama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP62232323A priority Critical patent/JPH0756926B2/en
Publication of JPS6477210A publication Critical patent/JPS6477210A/en
Publication of JPH0756926B2 publication Critical patent/JPH0756926B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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.
JP62232323A 1987-09-18 1987-09-18 High frequency amplifier Expired - Lifetime JPH0756926B2 (en)

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)

* Cited by examiner, † Cited by third party
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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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