JPS5484459A - Amplifier - Google Patents

Amplifier

Info

Publication number
JPS5484459A
JPS5484459A JP15277177A JP15277177A JPS5484459A JP S5484459 A JPS5484459 A JP S5484459A JP 15277177 A JP15277177 A JP 15277177A JP 15277177 A JP15277177 A JP 15277177A JP S5484459 A JPS5484459 A JP S5484459A
Authority
JP
Japan
Prior art keywords
input
impedance
circuit
diode
power
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
Application number
JP15277177A
Other languages
Japanese (ja)
Inventor
Takuro Oguchi
Toshio Kikuchi
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP15277177A priority Critical patent/JPS5484459A/en
Publication of JPS5484459A publication Critical patent/JPS5484459A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/72—Gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microwave Amplifiers (AREA)
  • Amplifiers (AREA)

Abstract

PURPOSE:To reduce the reflection loss through a simple circuit constitution by connecting the PIN diode to the input/output terminal for the amplifier which transmits the impedance of the input/output terminal after converting it to the impedance of the transmission line connected to the input/output terminal and then reverse the signal. CONSTITUTION:PIN diode 22 and 25 are connected to the input and output sides of circuit network 29 and 33 in input and output side matching circuits 36 and 37 respectively, and then diode 22 and 25 are also connected to power switch 21 via choke coil 23 and 26, with switch 21 connected to power terminal 20. When the power is applied to diode 22 and 25, both the input and output sides are set to the low impedance and to the high impedance when the power supply is cut off. And the mismatching state is secured for circuit 36 and 37 against the impedance of the line in transistor 30 which is connected between circuit 36 and 37, thus decreasing the loss for the reflecting signals.
JP15277177A 1977-12-19 1977-12-19 Amplifier Pending JPS5484459A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15277177A JPS5484459A (en) 1977-12-19 1977-12-19 Amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15277177A JPS5484459A (en) 1977-12-19 1977-12-19 Amplifier

Publications (1)

Publication Number Publication Date
JPS5484459A true JPS5484459A (en) 1979-07-05

Family

ID=15547781

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15277177A Pending JPS5484459A (en) 1977-12-19 1977-12-19 Amplifier

Country Status (1)

Country Link
JP (1) JPS5484459A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1345322A1 (en) * 2000-12-15 2003-09-17 Matsushita Electric Industrial Co., Ltd. Power amplifier and communication apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1345322A1 (en) * 2000-12-15 2003-09-17 Matsushita Electric Industrial Co., Ltd. Power amplifier and communication apparatus
EP1345322A4 (en) * 2000-12-15 2004-12-15 Matsushita Electric Ind Co Ltd Power amplifier and communication apparatus
US6960959B2 (en) 2000-12-15 2005-11-01 Matsushita Electric Industrial Co., Ltd. Power amplifier and communication apparatus

Similar Documents

Publication Publication Date Title
TW350164B (en) Wide-band radio-frequency converter having multiple use of intermediate frequency translators
MY116300A (en) Monolithic high frequency antenna switch
JPS6449303A (en) Wide band mixer
WO1999066683A8 (en) Impedance matching interface for transmission loop
JPS6432713A (en) Variable attenuator
SE8200300L (en) DIRECTIONAL SWITCH FOR BROADBAND SIGNALS
JPS5484459A (en) Amplifier
JPS54157020A (en) Carrier transmitter
JPS56165410A (en) High frequency transistor amplifying circuit
JPS57194629A (en) Pin diode switch
JPS54101641A (en) 3 decibel power distributor
JPS5724129A (en) Antenna circuit
JPS5528616A (en) Drive system for transmission line
IE41291B1 (en) Improvements in or relating to electrically controllable attenuators for v h f circuits
JPS57194611A (en) Branching and coupling circuit
JPS5478055A (en) Hybrid coupler-type phase shifter
JPS5483747A (en) Amplifier
JPS53108356A (en) Active circuit
JPS55118243A (en) Signal transmission unit
SU1538199A1 (en) Attenuator
GB934646A (en) Circuit arrangement for the connexion of a load to a coaxial lead
JPS6462928A (en) Optical repeater
JPS57202165A (en) Resonator coupling type mic ask modulator
JPS5523683A (en) Bidirectional relay unit
JPS5553701A (en) Output switching circuit