JPS57155803A - Band pass filter - Google Patents

Band pass filter

Info

Publication number
JPS57155803A
JPS57155803A JP4194181A JP4194181A JPS57155803A JP S57155803 A JPS57155803 A JP S57155803A JP 4194181 A JP4194181 A JP 4194181A JP 4194181 A JP4194181 A JP 4194181A JP S57155803 A JPS57155803 A JP S57155803A
Authority
JP
Japan
Prior art keywords
coupling
sides
mode
adjusting screws
constitution
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
JP4194181A
Other languages
Japanese (ja)
Other versions
JPS625530B2 (en
Inventor
Masato Sakai
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 JP4194181A priority Critical patent/JPS57155803A/en
Publication of JPS57155803A publication Critical patent/JPS57155803A/en
Publication of JPS625530B2 publication Critical patent/JPS625530B2/ja
Granted 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
    • H01P1/207—Hollow waveguide filters
    • H01P1/208—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure

Landscapes

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

Abstract

PURPOSE:To suppress the unnecessary circular TM mode resonance due to the disturbance of electromagnetic field at coupling section, by projecting coupling screws toward a direction in parallel with the electric field from an H plane at both sides of a rectangular waveguide. CONSTITUTION:Coupling adjusting screws 10, 20 and 12, 21 projected toward the direction of the electric field of a rectangular waveguide are provided at an H plane at both sides of input and output rectangular waveguides 8 and 9 around coupling holes 5 and 7 between the cavity of TEomn mode resonators 1 and 2 and input and output rectangular waveguides 8 and 9. With this constitution, the phase of TM mode generated near the coupling adjusting screws 19, 20 or 12, 21 at both sides is opposite with each other, the unnecessary resonance of the TM mode can be suppressed at a whole by controlling the insertion length of the coupling adjusting screws 10, 20 (or 12, 21) at both sides with a good balance.
JP4194181A 1981-03-23 1981-03-23 Band pass filter Granted JPS57155803A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4194181A JPS57155803A (en) 1981-03-23 1981-03-23 Band pass filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4194181A JPS57155803A (en) 1981-03-23 1981-03-23 Band pass filter

Publications (2)

Publication Number Publication Date
JPS57155803A true JPS57155803A (en) 1982-09-27
JPS625530B2 JPS625530B2 (en) 1987-02-05

Family

ID=12622235

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4194181A Granted JPS57155803A (en) 1981-03-23 1981-03-23 Band pass filter

Country Status (1)

Country Link
JP (1) JPS57155803A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4692723A (en) * 1985-07-08 1987-09-08 Ford Aerospace & Communications Corporation Narrow bandpass dielectric resonator filter with mode suppression pins
JPH0214601A (en) * 1988-02-16 1990-01-18 Hughes Aircraft Co Teeth coupling iris
CN100364169C (en) * 2005-11-28 2008-01-23 浙江三维通信股份有限公司 Cavity filter with adjustable capacitive coupling structure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4692723A (en) * 1985-07-08 1987-09-08 Ford Aerospace & Communications Corporation Narrow bandpass dielectric resonator filter with mode suppression pins
JPH0214601A (en) * 1988-02-16 1990-01-18 Hughes Aircraft Co Teeth coupling iris
CN100364169C (en) * 2005-11-28 2008-01-23 浙江三维通信股份有限公司 Cavity filter with adjustable capacitive coupling structure

Also Published As

Publication number Publication date
JPS625530B2 (en) 1987-02-05

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