JPS56169412A - Branching filter - Google Patents

Branching filter

Info

Publication number
JPS56169412A
JPS56169412A JP7232380A JP7232380A JPS56169412A JP S56169412 A JPS56169412 A JP S56169412A JP 7232380 A JP7232380 A JP 7232380A JP 7232380 A JP7232380 A JP 7232380A JP S56169412 A JPS56169412 A JP S56169412A
Authority
JP
Japan
Prior art keywords
frequency
emitter
collector side
inductance
capacitor
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
JP7232380A
Other languages
Japanese (ja)
Inventor
Toshio Imai
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 JP7232380A priority Critical patent/JPS56169412A/en
Publication of JPS56169412A publication Critical patent/JPS56169412A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/34—Networks for connecting several sources or loads working on different frequencies or frequency bands, to a common load or source

Abstract

PURPOSE:To give amplification operation and to make the size small, by providing an active element like transistors and inductive elements having specific frequency characteristics connected to the common terminal of it. CONSTITUTION:An input signal (a) is fed to the base terminal of a transistor 1 and a bias resistor 2 and an inductance 3 are inserted in series to the collector side, and a bias resistor 4 and a capacitor 5 are inserted to the emitter in parallel. Thus, the output (c) from the emitter side is lowered as the frequency is higher as shown in curve C due to the capacitance 5 connected to the emitter, and on the contrary, the output signal (b) from the collector side is increased as the frequency is higher as shown in curve B due to the capacitor 5 and the inductance 3 at the collector side. Further, the characteristics to the input signal (a) is shown in A. Thus, the amplification operation can be accomplished with a small size and a branching filter for frequency separation used for frequency split multiplex communication can be obtained.
JP7232380A 1980-05-30 1980-05-30 Branching filter Pending JPS56169412A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7232380A JPS56169412A (en) 1980-05-30 1980-05-30 Branching filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7232380A JPS56169412A (en) 1980-05-30 1980-05-30 Branching filter

Publications (1)

Publication Number Publication Date
JPS56169412A true JPS56169412A (en) 1981-12-26

Family

ID=13485951

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7232380A Pending JPS56169412A (en) 1980-05-30 1980-05-30 Branching filter

Country Status (1)

Country Link
JP (1) JPS56169412A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0563011U (en) * 1992-01-24 1993-08-20 デルタ エレクトロニクス インコーポレイティド Noise filter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0563011U (en) * 1992-01-24 1993-08-20 デルタ エレクトロニクス インコーポレイティド Noise filter

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