JPS5738001A - Band-pass filter for high frequency - Google Patents

Band-pass filter for high frequency

Info

Publication number
JPS5738001A
JPS5738001A JP11390380A JP11390380A JPS5738001A JP S5738001 A JPS5738001 A JP S5738001A JP 11390380 A JP11390380 A JP 11390380A JP 11390380 A JP11390380 A JP 11390380A JP S5738001 A JPS5738001 A JP S5738001A
Authority
JP
Japan
Prior art keywords
coupling
theta34
theta01
response
theta23
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
JP11390380A
Other languages
Japanese (ja)
Other versions
JPS6225283B2 (en
Inventor
Mitsuo Makimoto
Sadahiko Yamashita
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 JP11390380A priority Critical patent/JPS5738001A/en
Publication of JPS5738001A publication Critical patent/JPS5738001A/en
Publication of JPS6225283B2 publication Critical patent/JPS6225283B2/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
    • H01P1/201—Filters for transverse electromagnetic waves
    • H01P1/203—Strip line filters
    • H01P1/20327—Electromagnetic interstage coupling
    • H01P1/20354—Non-comb or non-interdigital filters
    • H01P1/20363—Linear resonators

Abstract

PURPOSE:To reduce spurious response at 3f0 (center frequency) and to extend the blocking region, by providing at least one 60 deg. coupling section with a line of a coupling section of a paralel coupling filter using a TEM line resonator. CONSTITUTION:Electrical lengths theta01-theta34 of coupling sections are selected as theta01=theta34=90 deg., theta12=theta23=60 deg. at center frequency f0 and input/output lines 81, 82 and resonators 83-85 of lambdag/2 of both end open type as a TEM line resonator constitute the coupling sections. Since the resonators 83-85 are of lambdag/2 type, spurious resonance is caused at nf0(n=1,2,3) and since the coupling electric length is 90 deg. for the coupling lengths theta01, theta34, no coupling is produced at 2f0, 4f0, 6f0 and also no coupling is caused at 3f0, 6f0, 9f0 since the coupling electric length for theta12, theta23 is 60 deg.. Thus, in the response of this filter, the spurious response at 2f0, 3f0. 4f0 can be reduced.
JP11390380A 1980-08-18 1980-08-18 Band-pass filter for high frequency Granted JPS5738001A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11390380A JPS5738001A (en) 1980-08-18 1980-08-18 Band-pass filter for high frequency

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11390380A JPS5738001A (en) 1980-08-18 1980-08-18 Band-pass filter for high frequency

Publications (2)

Publication Number Publication Date
JPS5738001A true JPS5738001A (en) 1982-03-02
JPS6225283B2 JPS6225283B2 (en) 1987-06-02

Family

ID=14624045

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11390380A Granted JPS5738001A (en) 1980-08-18 1980-08-18 Band-pass filter for high frequency

Country Status (1)

Country Link
JP (1) JPS5738001A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5187459A (en) * 1991-11-18 1993-02-16 Raytheon Company Compact coupled line filter circuit
US5442330A (en) * 1993-12-27 1995-08-15 Motorola, Inc. Coupled line filter with improved out-of-band rejection
CN102522617A (en) * 2011-12-28 2012-06-27 上海大学 Stepped impedance resonator (SIR) coaxial-cavity band-pass filter

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0649231U (en) * 1992-12-15 1994-07-05 トヨタ車体株式会社 Air spoiler mounting structure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5187459A (en) * 1991-11-18 1993-02-16 Raytheon Company Compact coupled line filter circuit
US5442330A (en) * 1993-12-27 1995-08-15 Motorola, Inc. Coupled line filter with improved out-of-band rejection
CN102522617A (en) * 2011-12-28 2012-06-27 上海大学 Stepped impedance resonator (SIR) coaxial-cavity band-pass filter

Also Published As

Publication number Publication date
JPS6225283B2 (en) 1987-06-02

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