JPS5544285A - Impedance transformation circuit - Google Patents

Impedance transformation circuit

Info

Publication number
JPS5544285A
JPS5544285A JP11820878A JP11820878A JPS5544285A JP S5544285 A JPS5544285 A JP S5544285A JP 11820878 A JP11820878 A JP 11820878A JP 11820878 A JP11820878 A JP 11820878A JP S5544285 A JPS5544285 A JP S5544285A
Authority
JP
Japan
Prior art keywords
terminals
load
impedance
transformer
diodes
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
JP11820878A
Other languages
Japanese (ja)
Other versions
JPS6133413B2 (en
Inventor
Hideki Furubayashi
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
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP11820878A priority Critical patent/JPS5544285A/en
Publication of JPS5544285A publication Critical patent/JPS5544285A/en
Publication of JPS6133413B2 publication Critical patent/JPS6133413B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/38—Impedance-matching networks
    • H03H7/40—Automatic matching of load impedance to source impedance

Landscapes

  • Transmitters (AREA)
  • Amplifiers (AREA)

Abstract

PURPOSE:To improve the energy transmission efficiency by making easy for the impedance matching, through the use of transformer changed for the impedance transformation ratio depending on load. CONSTITUTION:The transformer 5 incorporating diodes 6, 6' is connected between the power supply side terminals 7, 8 and the load side terminals 11, 12. With this constitution, the output impedance of the non-linear transformer 5 is changed depending on the change in the load 4. When the power supply voltage is small and the input voltage applied to the terminals 7 and 8 is small, the diodes 6, 6' of the transformer 5 are open and current is fed to the terminals 11 and 12 via the terminal 9, then the output impedance between the terminals 11 and 12 is greater, In this case, since the load 4 is also a greater value, the matching is made. If the input voltage at the terminals 7 and 8 is greater, the diodes 6, 6' are shorted, current is fed via the terminal 10, and the impedance between the terminals 11 and 12 is lower. Since the load 4 is smaller, the impedance matching is obtained.
JP11820878A 1978-09-25 1978-09-25 Impedance transformation circuit Granted JPS5544285A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11820878A JPS5544285A (en) 1978-09-25 1978-09-25 Impedance transformation circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11820878A JPS5544285A (en) 1978-09-25 1978-09-25 Impedance transformation circuit

Publications (2)

Publication Number Publication Date
JPS5544285A true JPS5544285A (en) 1980-03-28
JPS6133413B2 JPS6133413B2 (en) 1986-08-01

Family

ID=14730868

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11820878A Granted JPS5544285A (en) 1978-09-25 1978-09-25 Impedance transformation circuit

Country Status (1)

Country Link
JP (1) JPS5544285A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0404149A2 (en) * 1989-06-22 1990-12-27 Texas Instruments Deutschland Gmbh Antenna resonant circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0404149A2 (en) * 1989-06-22 1990-12-27 Texas Instruments Deutschland Gmbh Antenna resonant circuit

Also Published As

Publication number Publication date
JPS6133413B2 (en) 1986-08-01

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