JPS5593303A - Helical filter - Google Patents

Helical filter

Info

Publication number
JPS5593303A
JPS5593303A JP159579A JP159579A JPS5593303A JP S5593303 A JPS5593303 A JP S5593303A JP 159579 A JP159579 A JP 159579A JP 159579 A JP159579 A JP 159579A JP S5593303 A JPS5593303 A JP S5593303A
Authority
JP
Japan
Prior art keywords
bobbin
cut
performance
bpf
low frequency
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
JP159579A
Other languages
Japanese (ja)
Inventor
Toshihide Tabuchi
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP159579A priority Critical patent/JPS5593303A/en
Publication of JPS5593303A publication Critical patent/JPS5593303A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/20—Frequency-selective devices, e.g. filters
    • H01P1/201—Filters for transverse electromagnetic waves
    • H01P1/205—Comb or interdigital filters; Cascaded coaxial cavities
    • H01P1/2053—Comb or interdigital filters; Cascaded coaxial cavities the coaxial cavity resonators being disposed parall to each other

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

PURPOSE:To obtain BPF excellent in cut-off performance, by providing the attenuation pole at the high and/or low frequency side of the passing band. CONSTITUTION:In the 1/4 wave length resonators 7, 7', several tens of turns of conductor such as polyurethane film copper wire are wound on the bobbin 9 made of the insulator such as resin less in high frequency loss, the both ends of the bobbin are open, and the magnetic core 10 is made of ferrite core for equivalent inductance value adjustment of winding. Thus, since the attenuation pole can be provided at high and/or low frequency side of the passing band, BPF excellent in cut-off performance can be obtained.
JP159579A 1979-01-10 1979-01-10 Helical filter Pending JPS5593303A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP159579A JPS5593303A (en) 1979-01-10 1979-01-10 Helical filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP159579A JPS5593303A (en) 1979-01-10 1979-01-10 Helical filter

Publications (1)

Publication Number Publication Date
JPS5593303A true JPS5593303A (en) 1980-07-15

Family

ID=11505850

Family Applications (1)

Application Number Title Priority Date Filing Date
JP159579A Pending JPS5593303A (en) 1979-01-10 1979-01-10 Helical filter

Country Status (1)

Country Link
JP (1) JPS5593303A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57103402A (en) * 1980-12-08 1982-06-28 Matsushita Electric Ind Co Ltd Helical filter
CN104934669A (en) * 2015-06-15 2015-09-23 华南理工大学 Double-frequency helical cavity filter with controllable bandwidth

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57103402A (en) * 1980-12-08 1982-06-28 Matsushita Electric Ind Co Ltd Helical filter
CN104934669A (en) * 2015-06-15 2015-09-23 华南理工大学 Double-frequency helical cavity filter with controllable bandwidth
CN104934669B (en) * 2015-06-15 2018-02-27 华南理工大学 A kind of controllable double frequency spiral cavity filter of bandwidth

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