JPS55147804A - Branching circuit - Google Patents

Branching circuit

Info

Publication number
JPS55147804A
JPS55147804A JP5615179A JP5615179A JPS55147804A JP S55147804 A JPS55147804 A JP S55147804A JP 5615179 A JP5615179 A JP 5615179A JP 5615179 A JP5615179 A JP 5615179A JP S55147804 A JPS55147804 A JP S55147804A
Authority
JP
Japan
Prior art keywords
amplifying part
stage amplifying
terminals
lambda
wave
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
JP5615179A
Other languages
Japanese (ja)
Other versions
JPS6156883B2 (en
Inventor
Tsutomu Noguchi
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 JP5615179A priority Critical patent/JPS55147804A/en
Publication of JPS55147804A publication Critical patent/JPS55147804A/en
Publication of JPS6156883B2 publication Critical patent/JPS6156883B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P5/00—Coupling devices of the waveguide type
    • H01P5/12—Coupling devices having more than two ports
    • H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port

Landscapes

  • Control Of Motors That Do Not Use Commutators (AREA)
  • Microwave Amplifiers (AREA)
  • Amplifiers (AREA)

Abstract

PURPOSE:To prevent the influence of the succeeding-stage amplifying part upon the load impedance of the preceding-stage amplifying part to stabilize the operation of the preceding-stage amplifying part, by preventing the reflection wave dependent upon mismatching between the succeeding-stage amplifying part and a power distributing circuit from being input to the preceding-stage amplifying part. CONSTITUTION:Directional coupler 1 of coupling degree 4.8dB and directional coupler 2 of coupling degree 3dB are cascaded. Transmission lines 21, 22 and 23 having the same impedance as couplers 1 and 2 are connected to terminals 12', 13' and 14' where the incident wave from terminal 11 is distributed equally and appears. Lengths l1 and l2 of line 21 and 22 are set to satisfy (l/6+a)lambda and (l/12+ a)lambda respectively (however, lambda is wave length and l is length of line 23 and is equal to alambda). When loads having the same impedance are connected to terminals 24, 25 and 26, the incident wave from terminal 11 generates reflection waves of the same amplitude at terminals 24, 25 and 26 and is input to copulers 1 and 2. Then, all reflection electric power is distributed to terminals 15 and 16 equally and appears and is absorbed by matching loads.
JP5615179A 1979-05-08 1979-05-08 Branching circuit Granted JPS55147804A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5615179A JPS55147804A (en) 1979-05-08 1979-05-08 Branching circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5615179A JPS55147804A (en) 1979-05-08 1979-05-08 Branching circuit

Publications (2)

Publication Number Publication Date
JPS55147804A true JPS55147804A (en) 1980-11-18
JPS6156883B2 JPS6156883B2 (en) 1986-12-04

Family

ID=13019080

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5615179A Granted JPS55147804A (en) 1979-05-08 1979-05-08 Branching circuit

Country Status (1)

Country Link
JP (1) JPS55147804A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0176054A2 (en) * 1984-09-26 1986-04-02 Siemens Aktiengesellschaft Hybrid coupler

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0176054A2 (en) * 1984-09-26 1986-04-02 Siemens Aktiengesellschaft Hybrid coupler

Also Published As

Publication number Publication date
JPS6156883B2 (en) 1986-12-04

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