FI902438A0 - HOEGFREKVENS-RIKTKOPPLINGSAV-branches. - Google Patents

HOEGFREKVENS-RIKTKOPPLINGSAV-branches.

Info

Publication number
FI902438A0
FI902438A0 FI902438A FI902438A FI902438A0 FI 902438 A0 FI902438 A0 FI 902438A0 FI 902438 A FI902438 A FI 902438A FI 902438 A FI902438 A FI 902438A FI 902438 A0 FI902438 A0 FI 902438A0
Authority
FI
Finland
Prior art keywords
branch
transformers
junction
current transformer
secondary winding
Prior art date
Application number
FI902438A
Other languages
Finnish (fi)
Inventor
Wolfgang Wendel
Ralf Epple
Heinz Stadler
Original Assignee
Hirschmann Richard Gmbh Co
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 Hirschmann Richard Gmbh Co filed Critical Hirschmann Richard Gmbh Co
Publication of FI902438A0 publication Critical patent/FI902438A0/en

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
    • H03H7/48—Networks for connecting several sources or loads, working on the same frequency or frequency band, to a common load or source
    • H03H7/482—Networks for connecting several sources or loads, working on the same frequency or frequency band, to a common load or source particularly adapted for use in common antenna systems

Abstract

The present invention relates to branching directional couplers with a voltage and a current transformer and an internal terminating resistance, in which the junction of the secondary windings of the two transformers forms the branch and the internal terminating resistance is inserted between the secondary winding of the voltage transformer and earth. To achieve branch attenuations of >/= 16 dB in such a branching directional coupler, with little circuit complexity over a wide band up to 1.75 GHz with little transmission loss, a high degree of decoupling and good matching of all connections, an ohmic resistance connected in parallel with the secondary winding of the current transformer and connected to the latter with low inductance is provided which, together with the transformation ratios of the two transformers, is selected in such a manner that the nominal values for the branch attenuation and impedance are obtained as accurately as possible at the branch connection. By inserting a further ohmic resistance between the junction of the secondary windings of the two transformers and the branch connection, a further degree of freedom has been advantageously achieved for the choice of resistances and transformation ratios. <IMAGE>
FI902438A 1989-05-24 1990-05-17 HOEGFREKVENS-RIKTKOPPLINGSAV-branches. FI902438A0 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3916855A DE3916855C1 (en) 1989-05-24 1989-05-24

Publications (1)

Publication Number Publication Date
FI902438A0 true FI902438A0 (en) 1990-05-17

Family

ID=6381270

Family Applications (1)

Application Number Title Priority Date Filing Date
FI902438A FI902438A0 (en) 1989-05-24 1990-05-17 HOEGFREKVENS-RIKTKOPPLINGSAV-branches.

Country Status (5)

Country Link
EP (1) EP0399202B1 (en)
AT (1) ATE103432T1 (en)
DE (2) DE3916855C1 (en)
FI (1) FI902438A0 (en)
NO (1) NO902244L (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006005040A1 (en) * 2006-02-03 2007-08-09 Rohde & Schwarz Gmbh & Co. Kg Network analyzer with switchable bridge

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1516824B2 (en) * 1966-04-25 1970-11-12 Siemens AG, 1000 Berlin u. 8000 München Distribution circuit for dividing high frequency energy
BE792048A (en) * 1971-12-11 1973-03-16 Bosch Elektronik Gmbh LARGE BAND DIRECTIONAL TRANSFORMER WITH BIFURCATION MOUNTING
US3872408A (en) * 1974-05-03 1975-03-18 Lindsay Specialty Prod Ltd Signal directional tap
DE3028683C2 (en) * 1980-07-29 1984-02-16 Richard Hirschmann Radiotechnisches Werk, 7300 Esslingen Multiple branching device for high-frequency signals
JPH0195616A (en) * 1987-10-07 1989-04-13 Uro Denshi Kogyo Kk Two-way branching device

Also Published As

Publication number Publication date
NO902244D0 (en) 1990-05-22
EP0399202B1 (en) 1994-03-23
DE3916855C1 (en) 1990-05-10
DE59005052D1 (en) 1994-04-28
EP0399202A2 (en) 1990-11-28
EP0399202A3 (en) 1991-03-27
ATE103432T1 (en) 1994-04-15
NO902244L (en) 1990-11-26

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Legal Events

Date Code Title Description
FD Application lapsed
MM Patent lapsed

Owner name: RICHARD HIRSCHMANN GMBH & CO.